Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
Radial tire with automotive-grade tread has an 8-ply rating and a 1,220-lb max load at 65 psi. 12" x 4" Steel wheel has a 5 on 4-1/2 bolt pattern and a corrosion-resistant galvanized finish. Beveled stud holes keep wheel secure.
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.
Unlike standard trailer tire tread, which has solid, continuous ribs, the automotive-grade, computer-generated tread on these Karrier S-Trail radials has ribs with breaks. These breaks allow water to run off to the sides. The Karrier S-Trail tread also has sipes. Siping is a process in which thin grooves (or sipes) are cut into the rubber of the tire. The grooves channel water away from the tread so that the tire makes better contact with the road. Both of these features greatly improve traction during wet, snowy, or icy conditions.
Karrier S-Trail radials are constructed with double steel belts and full nylon plies for increased durability and endurance. The premium rubber compound materials of this tire help disperse heat.
The stud holes on this steel wheel are beveled to ensure that the wheel stays tight against your trailer hub. This also eliminates the need to constantly retorque the lug nuts.
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.
Rims are great and tires are just what i needed! Fast ship and good follow thru to the door.
Great tire. I have it mounted on my trailer as a spare.
Brooke M.
5/13/2025
Sweet! Is that a jetski I see? Headed to the lake anytime soon?
Great customer service advising shipping information. Received on time. Excellent tires and rims. My trailer companies Go To.
Great website. Excellent products. Tires/wheels arrived in 2 days. Recommended
Gwendolyn Y.
4/11/2025
The new wheels looks great on your trailer!
Easy ordering process. Tires showed up looking nice. Easy smooth process. Recommend.
Kevin 
4/11/2025
Excellent no issues.
Very happy with this purchase. I previously had 8" trailer rims/wheels and really wanted to upgrade to larger tires to accommodate the extra weight I have added to my small boat. But, I am not a handy guy and really didn't know what I was doing. In other words, I know how to fish but know zero about boat trailers. So, I spoke with etrailer support Tech Paula who walked me through the process in detail and waalaa, done!
These tires cost more but these tires are 8 ply load range D radial tire which have a higher rating on the weight capacity with a updated tread design. The galvanized wheels are a must for any boat trailer being put into salt water and fresh water in the area of the world I live in. Time will tell but the set up looks as it will hold up to years of repeated use. The tire & rim set up balanced easily on my old style bubble balancer I use in my shop. You get what you pay for...
Gary
2/9/2025
My Kenda trailer radials ST145R12 are still giving me piece of mine as the Texas heat is unforgiving. I am glad I purchase them for my trailer. This is not just another tire store they have answers.
Jerred H.
2/9/2025
Installed these on my Load Rite K1000-2T. They fit perfectly and there's no need to adjust the fenders. I do alot of long distance highway driving when I go fishing. I think they'll work out much better than the stock 4.80-12 bias plys.
Jd
5/18/2024
After one year, the tires are holding up just fine. Gladi made the switch
My wife & I are leaving fo our Western NY Home traveling on Rte 75. Driving at 70 mph, so these radial 12", 8 ply trailer tires should hold up for this 13 hr drive. I'm always worried towing and 12" wheels heat up at high speeds. Really glad you had these tires & wheels in stock & able to ship them in a couple days. I had 4 year old bias ply C rated tires on my trailer but I didn't trust them for the speed & distance I'd be traveling.
Nice radial tire and rim combo for my small boat trailer.
Great rims and tires for my jetski trailer. Just what we needed, super fast shipping as a bonus!!!
spare tire- as described / great
Exactly what I wanted would do it again
Brooke M.
6/11/2025
That's great! We will take it :) What are you hauling with the new tires?
Haven't installed and used the tires yet, but the order and shipping was fantastic. I ordered on Wednesday and received on Friday... 48hours. I am using the tires to pick up a pontoon boat in South Carolina and tow it to Florida... I will update after the trip if I have any problems, but if you don't see any more from me, that means it all went fine and I am out boating :-)
I am very satisfied with my tire purchase. I cannot believe that it has actually been a year since I bought them. They have been great at reducing my worries about blow-outs due to high temperatures. The original bias-ply tires were glowing hot after each trip. These Kendra Karrier radials are nice and cool even after a lengthy trip with a heavy trailer load. My peace of mind came at a really great price, as well.
I will definitely be reaching back out to etrailer.com if I ever need anything else in the future.
Tire is fine but rim looks like a unsupervised 2 year old got hold of a spray can and painted it. The galvanizing has awful runs. I know this is isn't the most expensive tire/wheel but does anyone take any pride anymore?
Katrina D.
7/13/2023
Unfortunately, this is very common for these galvanized rims. They are dipped into molten zinc and are drip dried. This will sometimes cause bubbles and or rough marks on the rims, you can sand it down to make it smooth.
I'm glad to see I have an option to garbage bias ply 4.80x12 trailer tires. I've tried a lot of them over the years and always the same result, poor quality, ride, and terrible tread life. My last set of bias plys on a 2 ski pwc trailer were already down to the wear bars in a year and maybe 1000-1200 miles.
Ordered these galvanized wheels and kenda radials and as always etrailer got them here very fast and well packed. Took them to my local tire guy and he balanced them. Didn't take much weight and watching them spin showed a straight rim and tire. Installed them and was shocked the first trip to the river. Zero vibration from the trailer! Bias plies seem to bounce and transfer it to my truck through the hitch. These tires are smooth, no trailer bounce, pull great, and I don't see my yamahas vibrating in the rear view mirror.
Fast forward a few months till now. I probably have 5-600 miles on them. Still perfect, zero air loss, zero tread wear noted. I will buy these from now on based on what I'm seeing so far.
Fantastic price, great selection, and free shipping to boot. I needed new tires for a long ATV trip and wanted a spare tire as well (I know, I know, but I usually only trailer locally). I ordered these radial tires and rims pre-mounted which allowed me to use one of the old wheels as my spare. Everything performed flawlessly over about 600 miles and even held their torque specs when I checked them during and after the trip. The spare tire carrier compliments the galvanized trailer frame and rims and looks like it will hold up to the elements of the North East. All in all, I highly recommend these products and etrailer.
I received galvanized wheels and tires as an upgrade for a very old boat trailer. The new larger radial tires on 12” rims are a great upgrade from the old non-radial tires on 8” rims. Tows smooth and easy on the highway with noticeably less trailer bang & hop on rougher roads at slower speeds. Super easy, super fast delivery. Awesome, thank you.
Definitely an upgrade in tire and wheel from original equipment and previous replacements. Put on utility trailer that hauls atv for hunting 130 miles each way at interstate speeds and includes off road hauling too. Included pics of old wheel/tire next to newly mounted tires from etrailer.
The attention spent in keeping the customer informed is terrific. Every product I’ve ordered has been delivered quickly and of great quality.
Overall nice for the price. I wanted to upgrade to radial tires after a blowout an the freeway with bias tires.
New Wheels, Tires and wheel bolts.
Tires look nice. Low quality galvanized coating on the rims, but typical for Chinese product.
I am very pleased with the speed that the wheels and tires were shipped to me. The quality is exactly what was described. I’m looking forward to installing them on my trailer. My only complaint is that one of the wheel and tire combo looked like it had been sitting around a while and the other looks like it was just assembled. There is no difference in quality just appearance. I’m still very pleased.
I haven't yet taken the boat back to the lake, but being in the mountains with switchback turns, the bias ply Harbor Freight tires just weren't cutting it. I blew obe out on the last trip! I expect these Kenda radials and galvanized rims to last a good while. etrailer is great to work with, and when I noticed a lower price, they gladly matched it. I will continue to buy from etrailer, and Robert was very helpful!
Wish you had an E rated tire on a rim...this is an excellent product for a spare tire which is why I purchased it
Do you have a question about this Trailer Tires and Wheel?
Info for this part was:
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Gwendolyn Y.
5/15/2025
The new rims look great, Eric! Is that a jet ski trailer? Please correct me if I'm wrong :)