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Contender ST205/75R15 Radial Trailer Tire - Load Range D

Contender ST205/75R15 Radial Trailer Tire - Load Range D

Item # C20851D
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Taskmaster Trailer Tires and Wheels - C20851D
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Product Expert Mary E

Is this right for you? Product Expert Mary E says:

Yes, if you:

  • Are looking for an inexpensive spare or replacement

No, if you:

  • Regularly tow to the worksite or campsite and need a beefier tire
Radial special trailer tire has a ply rating of 8 and a 2,150-lb maximum load at 65 psi. Constructed of double steel belts and polyester cords with a nylon overlay. Great for highway use. Fits 15" wheels. Lowest Prices for the best trailer tires and wheels from Taskmaster. Contender ST205/75R15 Radial Trailer Tire - Load Range D part number C20851D can be ordered online at or call 1-636-306-4830 for expert service.
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  • Reviews (551)
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Taskmaster Trailer Tires and Wheels - C20851D

  • Tire Only
  • 15 Inch
  • 205/75-15
  • Load Range D
  • Radial Tire
  • M - 81 mph
  • Taskmaster

Radial special trailer tire has a ply rating of 8 and a 2,150-lb maximum load at 65 psi. Constructed of double steel belts and polyester cords with a nylon overlay. Great for highway use. Fits 15" wheels.


  • Radial ply tire is great for highway use
  • Constructed with double steel belts and double polyester cords
  • Nylon tread-firming belt overlays help prevent tread separation
  • Tread bars offer a quick visual indicator of tread wear
  • Special trailer (ST) tire has sturdy sidewalls so that it can handle heavy loads
    • Created specifically for trailers and not intended for use on other vehicles
  • Meets DOT specifications and exceeds FMVSS


  • Fits: 15" diameter rims
  • Tire size: ST205/75R15
    • Section width: 7.99"
    • Outer diameter (when inflated): 27.13"
  • Capacity:
    • Load range: D
    • Ply rating: 8
    • Maximum load:
      • Single tire: 2,150 lbs at 65 psi
      • Dual tire: 1,875 lbs at 65 psi
  • Tread depth: 8.4/32"
  • Maximum speed: 81 mph (speed rating M)
  • 2-Year limited warranty

Standard Trailer Tire Tread

Contender Tire Tread

The standard tread on these tires has solid, continuous ribs, and it has very few sipes (or thin grooves) cut into the rubber. These tires are designed for use on trailers, so they don't require the level of traction that would be needed on a vehicle that is braking or steering.

Contender radials have double polyester cords and double steel belts. A protective layer of nylon is wrapped around the steel belts to help prevent tread separation.

Radial Tires vs. Bias Tires

Radial tire vs bias tire graphic

Radial ply tires are designed for trailers that are towed on the highway. The cords on a radial tire are positioned at a 90-degree angle to the direction of travel so that they lay across the width of the tire from wheel lip to wheel lip. This construction prevents the cords from rubbing against one another when the tire flexes, unlike the cords on a bias ply tire. As a result, radial tires have less rolling resistance and heat buildup, which leads to a longer tread life and improved steering at higher speeds.

C20515D Taskmaster Contender ST205/75R15 Radial Tire - LR D

Replaces C20851D

Customer Reviews

Contender ST205/75R15 Radial Trailer Tire - Load Range D - C20851D

Average Customer Rating:  4.8 out of 5 stars   (551 Customer Reviews)

Radial special trailer tire has a ply rating of 8 and a 2,150-lb maximum load at 65 psi. Constructed of double steel belts and polyester cords with a nylon overlay. Great for highway use. Fits 15" wheels.


Just purchased a used trailer for my RZR. we were headed back home and I had 2 of the tires had their tread come off. Tires were sun rotted and I only had one spare. After help from a friend we got home.

Ordered Tires on Wednesday Morning, they arrived Friday packed in boxes and protected well. I took my trailer and the tires to Burt Brother tires in my area and had them mounted on all 4 wheels.

Tires were exactly what I expected. The tire Guy said they mounted and balanced without issue.

Thanks for a great deal and even better service.

I've bought a few things over the last year or so from Etrailer and continue to be impressed with their service and prices. I'll keep coming back.

One year follow up, I have had no issues at all with these tires. I have several thousands of miles on them and they are running well. Wearing and holding up well. I liked them so much I even bought a set mounted on wheels for my boat trailer.
Brian S - 09/25/2018


These tires performed flawlessly. Even through the heat of the south west they did not indicate any excessive heat at all. Tracking true without any noticable sway in the trailer.

Still Flawless, I have not had one issue with these tires. They have performed better than expected and i feel maybe for a few more years no problem.
Bennet - 05/08/2022


I just found etrailer and could not be more pleased with the service they provide. My race car hauler needs new tires and I went to the local tire dealer for a quote to replace them. I thought the quote was too high so decided to research pricing on the computer. I stumbled onto and found they could provide a comparable tire upgraded to an 8 ply radial at 1/2 the price of the local tire company. Having never bought tires on the e-nt before, I thought shiping would be a night mare.

Wow, was I wrong. Free shipping and each tire came in an individually packed box for protection and right on schedule. Neat tracking map as to where the product is while in transit.

The tires are for a trailer that is used to haul everything from our sprint cars, vintage modified, 1/4 midgets, to this mini-sprint

Actually looking forward to my next purchase and browsing the fine selection available from this company.


I haven't had a chance to get much use out of them. Ordering was simple enough. The tires arrived quickly and in excellent condition.


Good tire for the price


Thanks. Earlier than expected.


Tires were built in sixth week of 2018 (0618) making them over a year old when I received
them . Other than the age , I am appreciative of the quality and tread design on these tires . Have not installed them yet , but I will update this review after a few months of summer travel . Etrailer folks are awesome to deal with . Have a Blessed week .

Its not unheard of for tires to arrive at our location that were manufactured a year or even more before we received them. With the exception of the Goodyear Endurance, these tires are manufactured overseas. After they are manufactured, they can sit in a warehouse for months until theyre packed in a shipping container and ultimately loaded on a container ship and shipped to the US. The trip here and entry through US Customs can easily take a couple of months or more. The tires then sit in a warehouse in the US until we order and receive them. Tires that are stored in a warehouse under controlled conditions dont age or dry rot like tires that are exposed to the elements and UV radiation do. The fact that your tires were older than a year when you received them will not have any effect on their lifespan or durability. They should be good for up to 6-7 years from the date of purchase, assuming theyre not stored in direct sunlight, not overloaded, kept properly inflated and their speed rating isnt being exceeded. The product warranty begins at the date of purchase, not the date of manufacture.
-- Etrailer Expert Mike L - 06/05/2019
Holding up good. No problems.
Al - 06/04/2020
Holding up good. Mounted and balanced well. No problems.
Al - 06/04/2020


Great tire for a great price.

Tire has great wear and is holding up better than expected
Zac - 04/27/2022


Still in great shape. Thanks


Very quick 2 day delivery. Tires look great.


The order was submitted and before I know it the order arrived very quickly. I was amazed!! Thank you E Trailer


Service over the phone was top notch and delivery was quick. Always a pleasure to do business with.


I have really gotten a good value for these tires. I have done about 10 or 12 extended weekend trips with my camper since I have gotten these tires. So I have put about 2500 miles on them. They have worn great and have withstood the terrible roads in South Carolina. Will definitely purchase again

Tires are still great. Glad I purchased! Would definitely buy again
Martin - 05/20/2019


Great help by customer service with the ordering process, tires are being installed today and I will leave an additional review in a few months, thank you!

Working out great. No issues with the tires at all, still great life left to them!
Jason - 06/14/2020


Tires were delivered on time. I had them mounted at a Firestone store and they have performed well. The tires are on a utility trailer that sits for weeks at a time then driven for 10-200 miles then sit again. I'm very satisfied with the tires and wheel that was used for the spare.


This is an excellent tire. we plan on using this in off road travel so the 8 PR will definitely help with being on gravel roads.When we bought the camper (used) it had mixed tires bias ply and radial (NOT A GOOD SITUATION) and different ply ratings. (ALSO NOT A GOOD SITUATION) so matching the existing radials and plies was crucial before we headed out for the Memorial Day Holiday.

Thanks E-Trailer


One year! Missed opportunity last month but got about 5500 miles on the tires. I bought them for a softer ride, no use issues and higher speed rating. And the tire came thru great. The ride IS softer without being mushy. After sitting outside for a cold {Ish} Tennessee winter and up on wood, the tires show no problems with the weather. Used on a 12 x6.5 custom Utility trailer to haul HD TriGlide . Wt with bike and gear about 2200 lbs. plus trailer. Honestly see no tread wear yet, so all is good. I would recommend this tire.


3 stars because in a one week duration of having received the tires, they have zero miles on them. I purchased these VERY WISHFUL of tires lasting more than 5 to 6 thousand miles. My previous 2 sets were bias ply. The first set were dangerous at about 6k miles which were supplied with the new trailer. The second set bias are still on the 3500 pound GVW single axle trailer with about 3500 miles and tread wear down to about 25 percent remaining tread. This trailer has been loaded to about 75 percent of 3500 GVW when in use.
If these tires don't get more miles I next will try auto radials with more flexible sidewalls, which I have seen done quite satisfactorily.


Fast delivery. Product looks great and mounted/balanced with no issues. My previous tires were dry rotted and a Load range B. My new tires are a Load range D. This make me more comfortable hauling my UTV around on a single axle trailer..


The tires were extremely difficult to mount. the side walls made it almost impossible to get the beads to seal. Since they have been on the trailer, I have gotten about 10,000 miles on one and 5,000 miles on the other with no problems. The wear seems to be good. So besides the difficulty installing they seem to be very good.


fast shipping great communication


Great tires!! All products arrived in a timely manner and we were kept informed of the order as to when it was shipped. We would definitely order our tires and rims from etrailer again. Great customer service!


Hello tires are nice an look great on the trailer. My only issue was my first order was two tires place it,about five minute want by order one more for the share. I email ETrailer right then 10 minutes from when I made my first order. To put the single tire with the other two to SAVE SHIPPING COST. NO HELP.


Etrailer always has exactly what I need for my trailer. Over the years I have been very satisfied with the service I’ve received from etrailer and will continue to shop there for all my trailer needs.


Excellent service and fast delivery.

Show More Reviews

See what our Experts say about this Taskmaster Trailer Tires and Wheels

  • What Type Of Tire Do You Recommend For My 1981 Layton Travel Trailer
    The general consensus is that radial tires are better if you plan on doing highway driving. Since their design allows them to run cooler than their bias-ply counterparts, they tend to last longer. The price difference between the two types of tires has decreased, making the radial tire the better buy. Unless you are going to spend most your time driving offroad or on grass, I recommend going with a radial tire. My radial tire recommendation is the Contender ST205/75R15 Radial Trailer...
    view full answer...
  • ST205/75R15 Spare Tire with Load Range D Needed for ATV Trailer
    You can use the Contender ST205/75R15 Radial Trailer Tire # C20851D. This is a Load Range D tire that fits 15 inch rims and has a maximum load of 2,150 lbs at 65 psi. The load range of a tire indicates its horizontal and sidewall strength. Load Range D means that the tire has an 8 Ply Rating at 65 psi and will have a higher weight capacity than Load Range C. Load Range C has a 6 Ply Rating at 50 psi. The weight capacity of a ST205/75R15 Load Range D Tire is 2,150 lbs at 65 psi as opposed...
    view full answer...
  • Should 205/70D15 or 205/70R15 Tires be Used for Highway Travel
    If you will be traveling on the highway then a 205/70-15 size tire with an R instead of a D is much better on your trailer as the R stands for radial and the D stand for bias. Radial tires have cords that run at a 90 degree angle to the direction of travel which allows it to flex more and run cooler than a bias tire. Although bias tires used to be the common trailer tire, they have sidewalls that are more stiff which makes them the better option for off-road applications like a farm. When...
    view full answer...
  • Could Contender ST205/75R15 Radial Trailer Tire be Used on a Dirt Road
    The tire # C20851D is mainly intended for paved roads but would still work fine on dirt roads and gravel. Nothing we have for trailer tires is for off road applications but this would work well on a dirt road.
    view full answer...
  • How to Determine Correct Spare Wheel/Tire for Forest River Wildwood 263BHXL
    Forest River's website does not provide tire specs for their 2019 Wildwood 263BHXL so to select an appropriate spare wheel/tire you'll want to check one of the OEM tires on the trailer to confirm its bolt pattern, size, type and load range (weight) rating. Your spare should always match your main tires. You most likely have wheels with the popular 5-on-4-1/2 bolt pattern. You can confirm using the linked article on bolt patterns as a guide. The other article on tire sizes will help confirm...
    view full answer...
    Image 1 for
  • Do Trailer Wheels have Pressure Rating for Load Range D Tire Size 205/75-15
    Typically with trailer wheels and tires it's not the actual wheel that has a psi limit that becomes an issue. Normally it's the valve stem installed in the wheel that is the issue (if any at all). The part # C20851D is a Load Range D ST205/75R15 tire that has a 65 psi max pressure that must be in the tire at all times. That shouldn't be an issue at all for what you have in the wheel currently as that's pretty low relative to some of the tire pressure ranges.
    view full answer...
  • Comparing the Taskmaster Contender Tires C20851D and C20515D
    The Contender ST205/75R15 Radial Trailer Tire # C20851D is the same tire as the Contender C20515D that you've found elsewhere. One of these parts is the older SKU number that was used to identify the tire. Other than that they are the exact same.
    view full answer...
  • Will 15 Inch Trailer Tires Replace Old 15 Inch Tires
    It very likely will, though it depends on the tire. The tires we carry which are ST205/75R15 such as the Contender # C20851D, will fit 15 inch diameter rims so there is a pretty good chance your tires will fit, though I cannot state a fit on products we do not carry. That said, I would be pretty surprised if they don't fit. In regards to your questions about your 2002 Chevy Blazer, you cannot use trailer tires on passenger vehicles as they will blow out.
    view full answer...
  • Should Trailer Tires be Inflated When they are Hot After Driving or Cold Before
    With trailer tires you want to inflate them to the max psi listed on the sidewall before driving warms them up. So whatever the ambient temperature is outside basically. You do not need to calculate pressure differences based on the temperature. Once the temps increase and the pressure slightly increases you'll be fine as that's how the tire is designed.
    view full answer...
  • Troubleshooting Trailer Tire Failure for 205/75-15 Load Range D Tires
    I am sorry to hear that you keep having blowouts. I have a few other things to offer to help out your situation but it does sound like you are doing some research. The first thing to check is your weight. You are correct that you want the majority of your weight to be slightly in front of your axle but the ideal tongue weight is 10-15% of the weight of your trailer. I have attached a helpful article on tongue weight for more info on this. The weight is also related to what your tires...
    view full answer...
    Image 1 for
  • What Should Trailer Tires be Inflated to
    With trailer tires you want to inflate them to the max psi listed on the sidewall before driving warms them up. So whatever the ambient temperature is outside. You do not need to calculate pressure differences based on the temperature.
    view full answer...
  • Trailer Tire Recommendation to Replace Tire Size 205/75-15
    Any tire size that starts with the letter P should not be used on a trailer. If this is a trailer application I'd recommend you stick with a trailer rated tire in the same size like the part # C20851D which will fit and work well. It has a capacity of 2,150-lb maximum load at 65 psi and has a higher speed rating of 81 mph.
    view full answer...
  • Spare Tire for Chariot CX1 Trailer
    We almost certainly carry a spare tire that will work for your Chariot CX1; if you look at your current tires you should be able to find a marking that has a size on them and from there you can find the tire that matches from our selection, which I will link for you. For example, if your tire has 205/75-15 on it then you may be looking for the Contender # C20851D, which is a radial tire with a load range of D. Or if you let me know what size tire you have I'd be happy to make a recommendation...
    view full answer...
  • Best Trailer Tire Recommendation for Size ST205/75R15
    The rim diameter portion of the size you asked about got cut off but I believe you are asking if you can use an ST205/75R15 in place of a 205/75R15 like with the part # C20851D that you referenced. The answer to that question is that yes you can. The ST portion of the tire size means it's intended for trailer applications like what you have. The Contender ST205/75R15 Radial Trailer Tire - Load Range D # C20851D would definitely work for your trialer.
    view full answer...
  • Radial vs Bias 205/75-15 Tires on Horse Trailer
    The "D" on your new ST205/75D15 tires stands for diagonal or bias ply construction, meaning that the tire's body plies crisscross. A radial tire's plies like what you previously had on your trailer branch out from an imaginary center of the wheel. As you mentioned in your question, a radial tire's construction will allow for it to run cooler than a bias ply tire. This is especially true when the tire is under a heavy load. The reason this is important is because excessive heat is the primary...
    view full answer...
  • What is the Size Difference Between a 205/70/15 Tire and a 205/75/15 Tire
    Because there is almost a full 1" of height difference between a 205/70/15 tire and a 205/75/15 tire like the Contender # C20851D, you won't want to use it as a spare and will want to use a matching spare. If you can't find a matching spare you may want to consider upgrading all of your tires to a matching set- those Contender # C20851D are a great, low cost option that provide you with a durable tire with a 2150-lbs per tire capacity. These are great for utility trailers or small campers,...
    view full answer...
  • What Size Radial Tire Is Needed To Replace a 7.00-15 Trailer Tire
    In order to replace a 7.00-15 with a radial you'd need to switch to a 205/75-15 which will be slightly larger in width (.3") but shorter in height (2"). That said, it will not drop the trailer a full 2" in height, only about 1". For this, I recommend the Contender ST205/75R15 Radial Trailer Tire part # C20851D which has an 81 mph speed rating.
    view full answer...
  • Can You Upgrade Tires To Increase Weight Capacity of a Trailer
    The weight capacity will be limited by your lowest rated component which may or may not be the tires. We don't recommend increasing weight capacity beyond what is specified by the manufacturer. The figures you'll need to keep in mind are Cargo Carrying Capacity (CCC) and Gross Vehicle Weight Rating (GVWR). The CCC is how much you can load on the trailer and the GVWR is the most it can ever weigh. If these figures are not listed on the trailer you'll have to reach out to the trailer manufacturer...
    view full answer...
  • Is Tire Load Rating Listed Per Tire or Per Axle
    The load rating expressed for a tire is the maximum amount of weight that the tire can support. Multiply that by two, and you'll have the capacity per axle. For instance, the Taskmaster Contender # C20851D 205/75-15 Load Range D tire you'd looked at has a 2150 lb per tire/4300 lb per axle capacity when used in a single wheel configuration, or 1875 lb per tire/3750 per side/7500 lbs per axle for a dual wheel configuration. The radial tire carries an M speed rating, which is good for up...
    view full answer...
  • Difference in Trailer Tire Sizes 225/75-15 and 205/75-15
    The reason the height on a ST205/75R15 tire like the Contender Trailer Tire # C20851D and a ST225/75D15 tire like the Taskmaster Trailer Tire # TTWSF22515D look about the same is because they are about the same, particularly to the naked eye. When fully inflated a 205/75-15 tire is 27.1" in diameter and a 225/75-15 tire is 28.3" in diameter, and that difference can be hard to see, especially if one is inflated more than the other. Your photos did not come through but we always recommend...
    view full answer...
  • How To Increase Weight Capacity When Using 205/75-15 Tires With 5 on 5" Bolt Pattern
    The only real options you have for increased tire weight capacity using hubs with a 5 on 5" bolt pattern would be to use a higher load range tire or a different size that fits the same wheel. The highest load range for a 205/75-15 is D which will provide a 2,150 lb per tire weight capacity. For this, I recommend the Contender ST205/75R15 Radial Trailer Tire part # C20851D. If this isn't enough you can upgrade to a 225/75-15, the Provider ST225/75R15 Radial Trailer Tire part # TTWTRTM2257515D...
    view full answer...
  • Why Do 205/75-15 Tires Wear In the Middle Of the Tread
    The main cause of a trailer tire wearing in the center of the tire is due the tire being overinflated. That said, if you were using a load range that exceeded the weight of the trailer by a good margin then that could cause this issue as well. That's just one of the reasons we recommend you don't just choose the highest load range possible. In order to replace the worn tires, I recommend the Contender ST205/75R15 Radial Trailer Tire part # C20515C for load range c or part # C20851D for...
    view full answer...
  • Best ST205/75/R15 Trailer Tire For A 2016 Diamond 6X12 Enclosed Trailer
    For a ST205/75/R15 trailer tire compatible with your 2016 Diamond 6X12 Enclosed Trailer. I recommend using a radial tire such as the Westlake ST205/75R15 Radial Trailer Tire part # LHWL300. The Westlake tires are one of the best trailer tires on the market. This particular trailer tire has a load rating of 2,150 lbs. at 65 psi, load range D, and L speed rating capable of speeds up to 75 mph. All Westlake tire are equipped with a 4 year manufacturer's warranty in addition to a 2 year roadside...
    view full answer...
  • Replacement Conventional Trailer Tire and Wheel for 1964 Mobile Scout Vintage Trailer
    Thanks for the picture of your wheel and tire. From it can tell that the conventional wheel part # AM20504 is the correct fit and I was also able to make out the tire size on your sidewall of 205/75R15 so for a tire to go with it the Contender part # C20851D which is a radial in this size that has plenty of capacity at 2,150 lbs at 65 psi and has a speed rating of 81 mph.
    view full answer...

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Info for this part was:

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