Can 4.80-12 Tire be Replaced with ST145/R12 Tire Using the Same Wheel

Question

Question:

I have 4.80 - 12 load c bias tires now and am wondering if the Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire - Load Range E will fit my rim?

asked by: Lance M

0

Expert Reply:

Yes, the Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire # AM10140 referenced in your question will fit the same 12 inch wheel with a 4 inch width that your existing 4.80-12 size tires are mounted to. Just note that the ST145/R12 tire will be about 0.8 inches larger in diameter, so you will want to make sure you have the necessary clearance on your trailer for the slightly larger tire size.

This Kenda radial ply tire is going to provide an excellent upgrade over your existing set. The tire features a maximum load of 1,520 pounds at 80 psi and a maximum speed of 81 mph. It includes a 2-year limited warranty.

I have attached a short video demonstration on this tire that you can also check out.

expert reply by: Chris R

0

Harold

4/27/2024

81 mph

Reply

Chris R.

4/27/2024

@Harold Thanks Harold! Looks like the specs on the tire changed at some point. The original answer is updated now.

Reply

Harold

4/28/2024

Bias plies are 65 mph.

Reply

Answer 1

Since both a ST145/R12 size tire, like the Kenda Karrier S-Trail #AM10130, and a 5.30-12 size tire, like the Kenda K353 #AM10068, fit a 12 inch wheel, a ST145/R12 size tire can replace a 5.30-12 size tire. Keep in mind that these tires do have…

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Answer 2

The most common tire size people go to from the 4.80-12 is the 5.30-12 like the Taskmaster 5.30R12 Radial Trailer Tire #TT53012C. This will give you a width increase of 1/2 inch and a diameter increase of 1.4 inches. This tire also has a speed rating…

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Answer 3

The 5.30-12 tires, being wider, are going to make more contact with the road. This means that the noise, and heat build up will be higher than a 4.80-12 tire but the rolling resistance will actually be less because the tire is larger diameter. The…

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Answer 4

You do indeed have a 12 inch rim. When you measure the diameter of the wheel, you'll need to measure the diameter of he wheel where the tire bead meets the wheel. I've provided you a cutaway diagram of a wheel showing where the measurement…

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Answer 5

Hey Joe, thanks for reaching out! The Rambler ST145/R12 Radial Trailer Tire #TA89GR has a 21.3" overall diameter. You'll take half of that diameter and measure from the spindle up to look for fender clearance. What is your motivation for…

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Answer 6

Hey Keith, if you exceed the speed rating of your trailer tire you will end up overheating the tire and that will most likely cause it to fail. This is definitely going to be very likely if you are driving 12 to 14 hours at a time. Best option would…

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Answer 7

The Loadstar 4.80-12 Bias Trailer Tire with 12" Wheel #AM30670 does come with a galvanized wheel that has a silver color to them. The design of the galvanized process gives it a rough texture instead of a smooth texture like you see with…

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Answer 8

Load range B trailer tires are going to have a lower capacity than C load range tires. Basically that, psi rating, and the ply rating are the only differences. A higher load range tire would last a little longer than lower load ranges of the same…

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Answer 9

Wheel diameter is not measured using the overall diameter. It is actually the diameter inside where the tire sits. You have 12 inch wheels; the tire size also indicates this. Tire and wheel combo #AM35354 will fit but you will want the tire…

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Answer 10

You are definitely going to need radial tires for highway speeds and the best option is the Taskmaster 4.80R12 Radial Trailer Tire #TT48012C. Radial trailer tires are constructed in a manner so they have cords which run at 90 degrees to the direction…

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Answer 11

In most cases 4.80-12 tires that are on wheels with 5 bolts they have a 5 on 4-1/2" bolt pattern. If you measure from the center of one hole to the hole right next to it you should get 2-5/8" if your bolt pattern is 5 on 4-1/2". I have…

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Answer 12

For a high-quality trailer tire that is size 4.80-12 and wheel with a 4 on 4" bolt pattern I strongly recommend the Kenda KR25 ST145R12 Radial Trailer Tire with 12" Aluminum Wheel #AM31208HWT. This wheel and tire combo is load range D with…

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