Can a 5.30-12 Size Tire be Replaced with a ST145/R12 Size Tire  

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…

Trailer tire sizes ST145/80R12 and 5.30-12 both fit on 12 x 4-inch wheels and when mounted both will have similar overall diameters; 21.9-inches for a 5.30-12 like Kenda #AM30820 and 21.3-inches for an item like #AM31215. We offer both of these tire…

As long as you have the needed wheel well and trailer frame clearance, there is no reason that you couldn't go to a larger tire size from your existing 5.30-12 tires. The next size up from what you have is going to be with an ST175/80-13 size…

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…

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…

A radial tire flexes more than a bias tire, giving it better ground contact, traction, stability, and tread wear. Radial tires generally run cooler than bias tires, which usually leads to a longer life for radials. I would recommend going with a…

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…

We do not carry a radial trailer tire in 5.30-12 size but there is another option. You can also use a 145/80-12. Both tires will fit on a 4 inch wide rim and can have similar weight capacities. The one size difference is that the 145/80-12 is 0.6…

The Kenda K353 Bias Trailer Tire - 5.30-12 - Load Range C #AM10066 has a speed rating of 65 mph and like you mentioned a max load capacity of 1,045 lbs at 80 psi. However you should make sure that the combined maximum load rating is higher than the…

From my research on the Harbor Freight 4x8 folding trailer uses 4.80-12 tires on a 12 inch wheel for the 1195 lb capacity trailer and a 5.30-12 for the 1720 lbs capacity trailer. It is a good idea to check your existing tires to see which size they…

I wish we could help but we aren't able to get those replacement parts. Best option we have would be an all new coupler like the part #DX56FR if you have disc brakes or part #DX27FR if you have drum brakes.

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…