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Radial tire has a ply rating of 8 and a 1,220-lb maximum load at 65 psi. The 12" diameter x 4" wide steel trailer wheel has a 5 on 4-1/2 bolt pattern and a corrosion resistant, black powder coat finish.
Features:
Specs:
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.
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.
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.
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.)
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.)
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.
Average Customer Rating: 4.8 out of 5 stars (6103 Customer Reviews)
Radial tire has a ply rating of 8 and a 1,220-lb maximum load at 65 psi. The 12" diameter x 4" wide steel trailer wheel has a 5 on 4-1/2 bolt pattern and a corrosion resistant, black powder coat finish.If you're on the fence, just buy them! I got these to replace the bias 4.80-12 tires that came with the trailer. These are light years better. They have a modern automotive style tread, plus they are M speed (81MPH) rated! The gloss black wheels look cool too. They have a much wider and flatter contact pattern with the ground, and while slightly larger diameter, they fit the stock 12" wheel fender perfectly. I've got a lot more peace of mind towing my utility trailer at highway speeds now.
Great Upgrade! Perfect Fit! These tires look Great and Perform Great! Extremely Happy! etrailer.com had all the information I needed to make my choice to upgrade from the current 4.80x12 tires to these ST145/R12. Thank You!
Major upgrade compared to the stock tires for my lowes utility trailer!
Faster delivery than I thought. Packaged well. I switched out my cheap wheels for the highway speeds.
Etrailer was easy to work with and the tires/rims were great. I'd highly recommend them.
Love the tires and wheels and also the fit on my boat trailer ! Bought 3 , 2 to replace old tires and wheels and a spare!
Good looking tires and wheels, fast shipping as always. etrailer for all my trailer needs. Put these on a home made kayak trailer.
I needed a spare tire for my yacht club trailer, it was an odd size and you guys had it right in line as I browsed down the wheel sizes on your site, including shipping I got it cheaper than going to the local Marine dealer. Now I need summer to get here.
Ed F.
1/13/2021
Needed a spare since purchase of boat, many different tire a d rim sizes on trailers, found the correct one on your site, hole pattern and dimensions were right on.
These tires have been great for me. I put them on a harbor freight trailer for my raft and I fell much better about going highway speeds.
I bought a trailer in Colorado to bring back to Alaska and had your tires and wheels shipped to my son in Colorado and everything worked out great!
Bought these to replace my 480x12 setup. Ordered these on a saturday afternoon recieve on a tuesday! Came package very well, compared to the ones you order off amazon that they just plastic band together and get beatup in the shipping process. Great black powder coat finsh on the wheels. Fit perfect on my trailer. Couldnt be happier with the whole process. Will definitely be a returning customer!!
Brooke M.
1/31/2024
Its always great to hear when one of our neighbors has a good experience! We would love to see a photo of the wheels on the trailer. Do you have any you wouldnt mind sharing?
Items were delivered in a real nice box and 100% what I ordered! I always buy from eTrailer for my trailering needs. Thanks!!!
5 stars for customer service, contact, and shipping.... Will have use tires some to give them fair rating, but look nice.
Was able to easliy find what i was looking for. There were instructions to ensure proper fit. Easy to purchase. Quick processing and shipping. Extremely happy with everything about etrailer
I bought these for my PWC trailer. Fit, look and performance are excellent at this point.
They look great and much more comfortable taking them on the interstate than the 4.8x12 tires.
Exactly what I needed to renew an older trailer.
Arrived on time and replaced my old bias ply tires perfectly. The black wheels have a great finish.
My order arrived early and in perfect condition. Thank you.
Great looking rim and definitely a better tire than what comes stock on my trailer. My trailer is brand new but came with Bias tires which I don't trust at all. Radial tires track much better, have a flatter tread which tracks better and are overall a stronger tire in my mind. The trailer came without a spare so I used one of the original Wheel as a spare .
Replacement radial tires and rims are a great upgrade. Delivery was fast.
Used this tire to replace 4.8-12. fit perfect under the fender. Definitely worth it
My 5 x 8 carry-on trailer needed bigger wheels and tires so I can feel more secure out on the road these were the perfect answer look at that fit I am very pleased with my purchase thank you etrailer.
The tires are a great upgrade to the standard "Carry On" trailer tire. Made a few modifications to the fender well and the results were what I was looking for. We've have taken my homemade square-drop camper out a few times now and rides really well.
Fit perfectly on my 2022 Karavan 5x8 trailer. Still surprised the tires that came on it were rated LESS than what the trailer is rated for. Now I don't have to worry for a blowout since these two tires are more than the capacity of the trailer
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Jeremiah
4/28/2022
One year later, and these are still great tires. Super smooth and straight at high speeds on the highway. No complaints!