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Loadstar ST175/80D13 Bias Trailer Tire with 13" White Wheel - 5 on 4-1/2 - Load Range B

Loadstar ST175/80D13 Bias Trailer Tire with 13" White Wheel - 5 on 4-1/2 - Load Range B

Item # AM3S050
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Kenda Trailer Tires and Wheels - AM3S050
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Bias tire has a ply rating of 4 and a 1,100-lb maximum load at 35 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 5 on 4-1/2 bolt pattern and a corrosion-resistant powder coat finish. Lowest Prices for the best trailer tires and wheels from Kenda. Loadstar ST175/80D13 Bias Trailer Tire with 13" White Wheel - 5 on 4-1/2 - Load Range B part number AM3S050 can be ordered online at or call 1-800-940-8924 for expert service.
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Kenda Trailer Tires and Wheels - AM3S050

  • Tire with Wheel
  • 13 Inch
  • 5 on 4-1/2 Inch
  • 175/80-13
  • Load Range B
  • Steel Wheels - Powder Coat
  • Bias Ply Tire
  • M - 81 mph
  • Kenda

Bias tire has a ply rating of 4 and a 1,100-lb maximum load at 35 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 5 on 4-1/2 bolt pattern and a corrosion-resistant powder coat finish.


  • Loadstar special trailer tire outshines other bias tires
    • Flatter tread offers improved stability for excellent handling
    • Special trailer tire design
      • Couples the strength of a bias tire with the durability and stability of a radial tire
      • Created specifically for trailers and not intended for use on other vehicles
    • Advanced rubber compound
      • Longer tread wear
      • Low rolling resistance for smooth ride
  • Steel wheel by Dexstar has 8-spoke design
    • Resists rust with e-coat and white powder coat finishes
  • Tire-and-wheel assembly meets Department of Transportation specifications


  • Rim dimensions: 13" diameter x 4-1/2" wide
  • Bolt pattern: 5 on 4-1/2"
  • Wheel capacity: 1,660 lbs
  • Wheel bolt size: 1/2"-20
  • Offset: 0
  • Pilot diameter: 3.19"
  • Tire size: ST175/80D13
    • Section width: 6.6"
    • Outer diameter: 24"
  • Tire capacity:
    • Load range: B
    • Ply rating: 4
    • Maximum load: 1,100 lbs at 35 psi
  • Maximum speed: 81 mph (speed rating M)
  • Warranty:
    • 5-Year on tire
    • Limited 1-year on wheel

1-Year Worry-Free Guarantee

This tire has a 1-year worry-free guarantee. If within the first 12 months the tire is damaged in any way, it will be replaced at no charge.

Bias Tires vs. Radial Tires

Bias vs. radial tire graphic

Bias ply tires are designed for off-road or agricultural applications. They are built with thick, durable nylon cords that are positioned at a 30- to 45-degree angle to the direction of travel. The layers alternate in a crisscross pattern, making the sidewalls stiffer so that the entire tire is able to flex easily. As a result, the tire provides a smooth ride and improved handling when trailering on uneven surfaces.

Determining the Bolt Pattern

The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.

Bolt Pattern - Odd

To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: "5 on 4-1/2" means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)

Bolt Pattern - Even

On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: "8 on 6-1/2" means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)

Bolt Pattern - Side

Measuring the distance from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.

  • If D = 2-5/8", then the bolt pattern is 5 on 4-1/2"
  • If D = 2-3/4", then the bolt pattern is 5 on 4-3/4"
  • If D = 3", then the bolt pattern is 5 on 5"
  • If D = 3-1/4", then the bolt pattern is 5 on 5-1/2"

3S050 Dexstar 8-Spoke 13" White Wheel and Loadstar K550 Bias Tire - LR B

Replaces Americana 3S050DX

Customer Reviews

Loadstar ST175/80D13 Bias Trailer Tire with 13" White Wheel - 5 on 4-1/2 - Load Range B - AM3S050

Average Customer Rating:  4.9 out of 5 stars   (6718 Customer Reviews)

Bias tire has a ply rating of 4 and a 1,100-lb maximum load at 35 psi. The 13" diameter x 4-1/2" wide steel trailer wheel features a 5 on 4-1/2 bolt pattern and a corrosion-resistant powder coat finish.


The wheel and tire are as expected and work as they should. The etrailer website and customer service are personal and amazing! Quick, easy, courteous. Even better than the "Good old days" we all remember! Thanks.


Tires and wheels for sailboat trailerJust bought two tires St1175/80d13 tires with white wheels mounted.( 5 on 4.5 )
The tires that I had were left out in the Chicago winters and had cracks in the sidewalls so they were becoming unsafe to tow anywhere. I called many places for tires and was told how hard to find A78-13 and that the cost was way up there. Then I went on the internet and found etrailer and talked to Cristy who is part of your sale staff. She took away all my fears and took me by the hand thru your catalog and found the tires I needed and at a great price also. After talking to her I felt that a big weight had just been lifted off my back and I could see daylight at the end of the tunnel.
You should be commended that you have such a fine person working on your behalf and who knows how to handle confused customers over the phone.
I could feel that she was on my side and not just another sales person.
The order was shipped the next morning and came to me by UPS on time . My wife and I were able to go sailing for the first time in years and I can't thank you all enough for the great service. Enclosed are two photos taken of my boat & trailer with it's new and safe tires. You made it easy, thanks!


The tires that I needed were the fairest price that I could find for already being on the rim. I am quite pleased with the delivery time and for how smooth the transaction went. I plane to use etrailer next time I’m in need of tires.


I had not used E trailer before and was somewhat afraid to to start with 2 tires. but the tires arrived in record time, I got several communications from E trailer regarding the progress of my order and I couldn't be more satisfied. The website info was very good and the tires are exactly what I expected at a great price. This is a great company to do business with.


I decided to upgrade my boat trailer tire/wheel size from 12" to 13" and am very satisfied with the online ordering experience and delivery of the new tires and wheels - Thanks!


tires were the right price and perfect size for my homebuilt kayak trailer


Great service as always


Everything it said it was. Pinstriping matched the other rim even though it was over20 years old


Product was exactly as described. 100% satisfied. The info provided on the etrailer website was helpful in making my product selection. Of course the price was good and the tire/wheel combo was shipped to my door for free.

Thank you for following up. All the products I bought are still working well and I am 100 satisfied. I still use them all except the tirewheel which is no fault of the product, I bought it as a spare for my trailer and knock on wood have never had to use it.
Richard - 12/28/2017


Tires are great. Never a question about quality when ordering from What is more impressive is the consistent excellent service and communication I always receive when ordering from Etrailer!


Matched my existing rims Bought as a spare Have not had to use it yet


Haven't put the tires on yet, but I am super pleased with etrailer's service. The trailer rim and tire combo shipped fast and arrived on time. It was crucial that they arrive on time as I need to install them and hit the road in a couple days. Tires are mint and the rims are very clean. Can't wait to see that they look like mounted. Will continue to use etrailer for all my boat trailer needs.


I wanted to put larger wheels/tires on a small utility trailer I have and asked for advice. They advised this product so I bought it. I was in no hurry but they shipped it very quickly and I received it and installed them last weekend. They were the perfect size and accomplished exactly what I wanted.


Fit perfectly for my boat trailer. Super FAST shipping.

Greg - 08/13/2020


I discovered etrailer on the internet and quickly found what I was searching for at a very attractive price. The ordering process is easy, quick and great shipping options and price. I was very pleased to be notified that my shipping option was upgraded at no additional cost and even better was that my order arrived 1 day sooner than expected. All around Great Experience and Value. Well Done etrailer corporation!!!!'


Once again I'm so pleased with the service from etrailer. Delivery was a day early which made my weekend plans a lot less stressed! Tires look great.


Products were as expected and at a good price. The shipping was FFFAAASSSTTTT......

I'll use your co. again,
Thanks Ron

Doing great thanks.
Ron - 09/10/2015




Dont usually order via the internet. Pics on website helped to select the correct products. Placing order was very easy. etrailer emails you every step of the way with info on your shipping. Products came in good shape, on time with no issues. Was overall very pleased with the service. I would shop here again.


nice tires, i had the same kendas on my other trailer their pretty good


Website was very easy to navigate and find what you are looking for. Products competitively priced and my order was delivered on time. I will definitely buy from this website again for all my trailer needs.


Fast Shipping! Product was just as described. Got my trailer back up and going quickly. Thank you!




Product was delivered early and in great shape. GREAT JOB!!
I would highly recommend etrailer to ALL!!!!

Thank You!!!


The tires were delivered ahead of schedule in perfect condition.
Thank You!

Show More Reviews

Ask the Experts about this Kenda Trailer Tires and Wheels

  • Recommended Trailer Tire/Wheel to Provide Smoothest Ride Quality for Delicate Cargo
    There will not be much difference in ride smoothness between a fully-inflated 35-psi rated tire and a fully-inflated 90-psi rated tire, but typically a radial will give a slightly smoother ride than a bias ply tire since it has a more flexible sidewall. Any trailer tire, whether a bias ply or radial, and regardless of its load rating, will deliver its full rated weight carrying capacity only when inflated to the full tire pressure noted on its side wall. Since most customers are looking...
    view full answer...
  • Can a B78-13ST Tire and an ST175/80-13 Tire be Used at the Same Time on a Trailer
    Tire size ST175/80D13 is the metric equivalent of a B78-13ST so you technically could have both sizes on the trailer at the same time. However, if the tires have different load ranges that would mean they also have different ply ratings. The ply rating difference and the tread pattern difference can lead to uneven tire wear and tracking problems. Ideally you will want to have all tires on the trailer the same. I have included a link to the ST175/80-13 tires that we carry.
    view full answer...
  • Spare Wheel and Tire Recommendation for Trailer with Tire Size ST175/80R13
    For a 5 lug wheel with the tire size ST175/80R13 what we know will work as a replacement is the part # AM3S050. This matches the tire size and also the 5 bolt pattern you have which would be 5 on 4-1/2 inch.
    view full answer...
  • 13 inch Wheel and Tire to Replace 12 inch Option on Harbor Freight Trailer
    Trailer wheels are totally separate from the hubs of the trailers so they are not included like with the part # AM3S050. This will fit on the current hub you have now though as long as it's a 5 lug setup and will work well.
    view full answer...
  • What Tire Size Matches a 6.50-13 Trailer Tire on an Old Camper
    The closest modern equivalent to a 6.50-13 tire is a 175/80-13. The tire and wheel combo, # AM3S030, that you have referenced has this tire size. This tire comes mounted on a wheel with a 4 on 4 bolt pattern. We also have this tire size with a 5 on 4-1/2 bolt pattern wheel like # AM3S050. I have included a link to our FAQ articles on trailer tires and wheels for you.
    view full answer...
  • Availability of ST175/80-13 Load Range B Tire on a White Painted Rim
    That same 175/80-13 Load Range B Bias Ply tire is available mounted on a white spoke rim as part # AM3S050. That tire has a load range capacity of 1100 lbs or 2200 lbs per axle. I've linked you to our help article that has all kinds of information about trailer tires.
    view full answer...
  • Replacing Existing 4.80x12 Tires with 175/80-13 Tires on Small Utility Trailer
    You can certainly go with a larger wheel/tire combo, like the # AM3S050. This is a 175/80-13 tire on a white spoke wheel, which is about 3.5 inches taller and around 2 inches wider than your existing tires. Because we're talking a circular object, the tire will be moved about 1-3/4 inches closer to the fender and about 1 inch closer to the trailer frame. As long as you have enough clearance above for the fenders and to the inside to clear the trailer frame, they should work just fine for...
    view full answer...
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  • Will the ST175/80D13 Tire Replace B78-13ST Tires on a Coleman Pop-Up Camper
    Yes, the Kenda Loadstar ST175/80D13 tire is the equivalent to the B78-13 tires on your Coleman pop-up camper. To determine if the wheel will work, you will want to make sure the bolt pattern on this wheel matches the bolt pattern on your hub. This wheel has a 5 on 4-1/2 bolt pattern. If you measure the distance between the center of one bolt on the hub or bolt hole on your current wheel to the center of the adjacent bolt (trailer) or bolt hole (wheel) and it measures 2-5/8 inches, then...
    view full answer...
  • Replacement 13-Inch Trailer Wheel and Tire with 5-on-4-1/2 Bolt Pattern
    We can help you select a suitable spare wheel/tire for your trailer that uses 13-inch wheels with a 5-on-4-1/2-inch bolt pattern. You will want to use the same tire type (bias ply or radial), size and one of the same load range as what is currently on the trailer. It is not a good idea to mix tires of different types, sizes or load ranges. You can use the linked page to see all 13-inch wheel/tire combinations with the 5-on-4-1/2 bolt pattern. Just click on the tire type, size and load...
    view full answer...
  • Determining Bolt Pattern on Vintage Trailer From the 1960's for New Wheels and Tires
    Even on a trailer from the 1960's I've never heard of a 5 on 4 bolt pattern. Where exactly are you measuring the 4 inches? With a 5 lug pattern you need to measure from the center of one bolt hole to the outside edge of one of the furthest bolt holes from that one. Just like is shown in the picture. I've also attached a help article on measuring your bolt pattern and a template you can use if you'd like. If you find out you do indeed have the common 5 on 4-1/2 pattern there's a lot of...
    view full answer...
    Image 1 for
  • Replacement Wheels/Tires for 1999 Haulrite Jet Ski Trailer
    HaulRite offers several different trailers capable of carrying two personal water craft. For example, their VWC Double HD uses ST185/80D13 Load Range D tires while their JS Double-13 uses ST175/80D13 Load Range B tires. Both trailers use wheels with a 5-on-4-1/2-inch bolt pattern. The Haulrite website does not list the weights of these two trailers, but I suggest you simply replace the existing wheels/tires with pre-mounted replacements of the same rating. It is not advisable to simultaneously...
    view full answer...
  • Boat Trailer Spare Tire Replacement for Older B78-13T Tire Size
    You want all of your tires to be the same whether they are installed on the trailer or will be used as a spare. The Loadstar ST205/75D14 Bias Trailer Tire with 14" White Wheel # AM3S440 you're looking at is a bit larger than your B78-13T tires so we need to find you a 175/80-13 tire instead. For your application I recommend going with the Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel # AM3S060 as the galvanized finish protects the best against water and this has a Load...
    view full answer...
  • Higher Speed Rated Trailer Tire Setup for 13 inch Wheel
    Going to a larger wheel and tire won't hurt or affect your axle in any way. So if you wanted to go up to a 13 inch wheel and tire size like the 175/80-13 like with the part # AM31985 for a 5 lug wheel or part # AM3S120 for a 4 lug you'd gain the extra speed rating you want as well as weight capacity. Overall diameter of both of these is 24 inches, the speed rating is 81 mph, and the width is 6.6 inch.
    view full answer...
  • Comparing ST175/80D13 Bias Ply Tires to ST175/80R13 Radial Trailer Tires
    The primary difference between special trailer tires ST175/80D13 and ST175/80R13 is the type of construction. The D in the first tire size indicates bias play construction as with wheel/tire # AM3S050. For the other tire designation ST175/80R13 the R indicates radial construction. The main practical difference between the tire types is that bias ply tires have stiffer sidewalls that make them better suited to rough roads and off-road use while radials have more flexible sidewalls that...
    view full answer...
  • Smallest Size Tire Available to Fit on a Trailer for Storage
    The smallest rim size that will accommodate 10 inch brake assemblies is 13 inches. Our smallest diameter tire that fits a 13 in rim is 175/80-13 sized tires. The diameter of a 175/80-13 sized tire is about 24 inches. We carry the tire by itself, like # AM1ST74, on a rim with a 4 on 4 bolt pattern, # AM3S030, and on a rim with a 5 on 4-1/2 bolt pattern, # AM3S050.
    view full answer...
  • Best Speed Rating for a 4.80-12 Trailer Tire
    For your 4x6 utility trailer, I recommend using the Taskmaster 4.80R12 Radial Trailer Tire part # TT48012C. This tire has a radial ply construction which will be better for the longer highway trips you intended to make. It has a load range C rating which is 990 lbs per tire and a speed rating M which is 81 mph. It also comes with a two year warranty. The Loadstar ST175/80D13 Bias Trailer Tire part # AM3S050 that you referenced would not fit your trailer due to the tire to fender clearance...
    view full answer...
  • Highest Capacity 4.80-12 Radial Trailer Tire for 5x8 Trailer
    We have exactly what you're looking for with the Taskmaster 4.80R12 Radial Trailer Tire part # TT48012C. It has an M speed rating which translates to a maximum speed of 81 mph, it's also has the highest load range available in this tire size - load range C (990 lbs max load at 90 psi), for a combined 1,980 lbs total capacity. This tire isn't offered pre-mounted on a wheel, but if you also need to replace your wheels, you can use the Dexstar Steel Spoke Trailer Wheel - 12" x 4" Rim - 4...
    view full answer...
  • Trailer Modifications and 8 inch to 12 or 13 inch Tire and Wheel Upgrade Recommendations
    To upgrade to a larger tire you will have to upgrade to a larger wheel as well, and with that in mind you will want to make sure that the bolt pattern of your new wheel and tires match the existing bolt pattern on your current trailer. I have included a helpful article explaining how to determine the bolt pattern of your existing wheels. Depending on the existing bolt pattern on that your trailer is currently set up for I recommend the following: 4.80-12 - 4 on 4 bolt pattern # AM30620;...
    view full answer...
  • Wider Tires for Use on Sand for a JetSki Trailer
    You are in luck because all 12 inch trailer tires fit the same size wheels. I recommend going with a 145-12, # AM10130. It will have a section width of 5.7 inches, nearly a full inch wider than your existing tires. You will need to make sure that you have enough space all around the existing tires for the larger size. The new tires will be 0.8 inches taller and 0.8 inches wider. To go wider than that you would have to step up to a 13 inch and you would have to change wheels as well. We...
    view full answer...
  • Compatibility of Dexter # 35545E-ST-EZ-89 Trailer Axle with a 5.30-12 Tire on a 12 Inch Wheel
    The axle assembly you referenced, part # 35545E-ST-EZ-89 includes brake hub/drums that have a 5 lug on 4-1/2 inch bolt circle. However, the 12 inch diameter brake drums wouldn't be compatible with your current wheels. The drums would not fit correctly into the recess in the back of the wheel. The easiest course of action would be to move up to a tire on a 13 inch wheel. We offer a 175/80-13 load range B bias ply tire on a white powder coated 8 spoke wheel with a 5 lug on 4-1/2 inch bolt...
    view full answer...
  • Spare Tire Recommendation for a ST175/80D13 Wheel and Tire
    Since you have bias ply tires currently on your trailer I would recommend you stick with a bias ply as a spare. The part # AM31957 would work for you as it is the same tire size and bolt pattern even though the rim is 1/2 inch thinner. Instead I would recommend the part # AM3S050 as it comes with a bias ply tire like what you have. I attached an FAQ on trailer tires for you to check out as well. For a spare tire carrier you might also be interested in the CE Smith Spare Tire Carrier...
    view full answer...
  • 4.8 X 12 Trailer Tires Speed Rated for 81 MPH
    I have two tires that fit your needs. The Taskmaster # TTWSF48012C is a 6-ply Bias Ply tire rated for up to 990 pounds per tire (Load range C) and speed rated (M) up to 81 mph. The Taskmaster # TT48012C is a radial trailer tire also load range C and speed rated for 81 mph. Personally, for trailers, I don't think that radials bring much additional benefit over bias ply. If you need tires already mounted on wheels just email me back with your bolt pattern. This is probably a good...
    view full answer...
  • Trailer Tire and Grease Gun Recommendation
    When choosing tires, it is important to choose a tire that matches, or exceeds, your axle's capacity. It is also important to note that trailer tires should always be inflated to their maximum psi. The max psi will be noted on the tire's sidewall. If you need a tire with load range B, I recommend the Loadstar Bias Trailer Tire # AM1ST74. This tire has a max load of 1,100 pounds at 35 psi. You will want to double check your bolt pattern, but if you need a tire and wheel with 5 on 4-1/2...
    view full answer...

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