What Tire Pressure Should You Set 145R12 Trailer Tires Too

Question

Question:

Cant find the air pressure anywhere on the tire what should I use?

asked by: Clyde Y

0

Expert Reply:

The max tire pressure rating isn't the same for all 145R12 trailer tires so you'll need to look on the actual tire sidewall for the load range which should also state the max tire pressure rating. We recommend filling the trailer tires to the max tire pressure rating listed on the sidewall while cold. The Kenda Karrier S-Trail ST145/R12 Radial Trailer Tire part # AM10140 for example has a load range e rating with 80 max psi.

expert reply by: Conner L

0

Answer 1

It sounds like you have a pretty nice trip planned! Bias trailer tires do not have a set range you can travel as they meet DOT standards for a tire. With that said before you start your trip I would make sure to check your tires for any dry rot or…

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Answer 2

The two tire sizes are similar, but the 145/80-12 will be a bit taller at 21.3 inches vs. the 4.80-12 which has a diameter of 20.5 inches. Aside from that they are very similar and both fit 12 inch diameter rims that are 4 inches wide. The radial…

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Answer 3

It's recommended that trailer tires be inflated to the maximum pressure rating listed on the tire's sidewall. As the pressure is reduced from that point, the load capacity of the tire is reduced by an unknown level, so it's safest to keep…

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Answer 4

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 5

I have several options to upgrade 4.80-12 wheel/tires on a trailer without replacing hubs, ranging from 13" - 15". The best option will really come down to how much space you have available and this will be different for each trailer. The…

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Answer 6

The psi of your trailer tires will be listed on the side wall. It will list the max psi which is what you will want to fill them to regardless of how much weight you have. For reference, the 4.80 x 12 tires we carry have a 60 psi max for load range B…

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Answer 7

The Kenda Karrier ST145/R12 Radial Tire, #AM10130, is approximately 1/2 inch larger in diameter and 1 inch wider than a 4.80-12 trailer tire. The main things to consider when moving to a larger tire size is wheel well clearance and weight capacity.…

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Answer 8

The two tire sizes you referenced, 4.80-12 and 5.30-12, both fit 4-inch wide rims, but they differ in their overall diameter. A 4.80-12 tire/wheel when fully inflated will have a diameter of 20-1/2-inches while the 5.30-12 size will be just under…

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Answer 9

Yes, you can replace your load range C tires with load range D tires without issue. It will only become any issue when you go down load ranges, not up. The tires will have the same overall diameter as long as they are the same size regardless of…

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Answer 10

The closest we have to what you're looking for is a 145/R12 size tire, Load Range E rated for up to 1,520 pounds at 80 psi, but its speed rating is only 65 mph. It's the only Load Range E tire we have at that size and we don't have any…

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Answer 11

The Kenda 4.80-12 Load Range C tires, part #AM10062, should always be inflated to 90 psi when they're cold. Running them at a lower psi might make the ride less stiff but it also will compromise the integrity of the tire. Trailer tires are…

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Answer 12

Blowing tires frequently is unsafe but there are steps you can take that should prevent blowouts with the volume you are experiencing. When a tire blows out it is because of overheating and that generally happens for a few reasons - they are…

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What Tire Pressure Should You Set 145R12 Trailer Tires Too

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