Tire Size Upgrade from 4.80-12 on Trailer

Question

Question:

If my trailer takes 4.80- 12 tires, what is the next size up that I can safely put on? This is a 4x8 trailer

asked by: Joe C

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Expert Reply:

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 of 81 MPH.

expert reply by: Jameson C

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Answer 1

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…

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Answer 2

The closest metric trailer tire size to a 4.80x12 is going to be a 145/80-12. The typical diameter of a 4.80x12 tire is 20.5 inches. On a 145/80-12, it is 21.3 inches. So the metric size will be a little over 1/4 inch taller. Make sure to measure…

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Answer 3

The largest tire size you can fit on the rim you current have that has a 4.80-12 tire is going to be the size 5.30-12 like the part #TT53012C from Taskmaster. This has a capacity of 1,050-lb max load at 80 psi and has a speed rating of 81 mph too…

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Answer 4

Although it is not the highest load rating, I recommend the Taskmaster 5.30R12 Radial Trailer Tire - Load Range C #TT53012C for a replacement tire on your trailer. I would choose this tire over others since it is a radial tire which will be ideal for…

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Answer 5

For a 4.80-12 trailer tire, the overall diameter or height is 20.5 inches. For a 5.30-12 it is 21.9 inches. That is a difference of 1.4 inches but you will only see half of that, 0.7 inches, in added height. Please keep in mind that going to a taller…

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Answer 6

The closest radial tire size I would have to replace the 4.80-12 bias tire size is the Kenda Karrier S-Trail ST145R12 Radial Trailer Tire #AM10130. The 4.80-12 bias tire is 20.7 inches tall and 4.9 inches wide. The 145R12 radial tire is 21.3 inches…

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Answer 7

Your math is correct in your trailer weight load example. If a fully-loaded tandem axle trailer weighs 4000-lbs then each of the 4 tires will bear 1/4th of that load, or 1000-lbs. In this case a tire rated for 1300-lbs would provide a good safety…

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Answer 8

You could very easily go to the larger tire size of 5.30-12 over the 4.80-12 if you wanted to. The part #TTWSF53012C would be a great choice in this tire size that would last a long time. Although typically it's not mileage that wears out trailer…

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Answer 9

There is a solution for you, but the recommended clearance from the top of your trailer's tires to your fender is at least three inches and since you said you were already just under that I do not recommend going to the 1.4 inch larger 5.30-12…

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Answer 10

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 11

For a 12 inch wheel/tire combo, I'd recommend the Kenda Karrier ST145/R12 tire on a 12 inch powder coated steel wheel, part #AM35354. This is a radial tire that will run cooler than a bias ply at highway speeds, however the tire is rated for a…

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Answer 12

The 12 inch tires that we carry are rated for 65 miles per hour. Any faster than that for extended periods and the excessive heat build up will cause tire failure. To get a tire with a higher speed rating you would have to go up in size. That also…

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Tire Size Upgrade from 4.80-12 on Trailer

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