Is there a 12 Inch Trailer Tire that is Rated for 80 Miles Per Hour

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Question:

We just bought a utility trailer for our camping gear andd kayaks. Weight isnt an issue, but speed is. The trailer came with 12 inch tires are rated for 55 mph. Freeway speeds here are 70 mph and in some places 80 mph. We frequently travel seven hours to get to where we camp. Most of it is all freeway at those high speeds. Is there a trailer tire that can handle those speeds for that length of time. Thank you.

asked by: Jodi

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Expert Reply:

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 means you will need different wheels.

If your hubs use a 5 on 4-1/2 bolt pattern then tire and wheel combo # TA43RR is one option. This tire has an M speed rating which means it is rated for 81 miles per hour. The size is a 175/80-13. It is 6.97 inches wide and 24.02 inches tall. If you have the space all around the existing tires for the larger size then this is the best solution.

expert reply by: Michael H

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Answer 1

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 2

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 3

The Kenda 4.80-12 Bias Trailer Tire with 12" Galvanized Wheel - 5 on 4-1/2 - Load Range B #AM30590 have a max speed of 65 mph. When trailer tires are not speed rated with a letter, the default is 65 mph max. I've attached an article to…

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Answer 4

As long as the manufacturer of your trailer doesn't have any caveats regarding running the trailer at 70-75 mph, the hubs/bearings are properly serviced at regular intervals and the tires you're using are properly speed rated, there's no…

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Answer 5

The smallest diameter 13 inch trailer wheel and tire will have a diameter of 24.1 inches (ST175/80-13). There are 3 common 12 inch trailer tire sizes: 4.80-12 has a diameter of 20.5 inches, 5.30-12 has a diameter of 21.9 inches, and 145/80-12 has a…

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Answer 6

You're correct that all of the 8 inch rims we carry have a pilot hole that's in the range of 2.8 inches. Not nearly as large as the 3.275 inches you need. The best solution I recommend is replacing the hubs, unfortunately. I recommend part…

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Answer 7

In order to upgrade from a ST145/12 to a ST175/80-13, you'll need to account for added height and width of 2.7" and 1.1" respectively. You'll need at least 3" from the fender and 1" from the frame for proper fit. If you…

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Answer 8

You'd need to go with the tire part #TT48012C as it's only option for 12 inch wheel that has an 81 mph speed rating and then for a matching wheel part #AM20124 which has the 4 bolt pattern you need. We also don't have a way to mount them…

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Answer 9

The speed rating limitation for a trailer will come down to the tires, it has little to nothing to do with the axle, hub, or wheel size. That said, smaller tires generally do have lower speed ratings but you do not need to upgrade the wheels on your…

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Answer 10

Kenda ST145R12 trailer tire #AM31208 is rated for 65 miles per hour. I do not recommend doing 70 miles per hour when towing a trailer if for no other reason other than the tires are not rated for it. What will happen is that the higher sustained…

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Answer 11

Going with a larger wheel will not affect your bearings at all. However, if the bearings are getting old, it may not be a bad idea to replace them. You will need to remove one of the hubs to gain access to the bearings as you will either need their…

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Answer 12

The largest diameter tire we have that is compatible with a 12 inch wheel is a ST145/R12 size tire which measures 21.3 inches in diameter. For this I recommend using the Kenda Karrier S-Trail #AM10140 which has a load range of E (1,520 lbs at 80 psi)…

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Is there a 12 Inch Trailer Tire that is Rated for 80 Miles Per Hour

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