Can Bias Trailer Tires Be Replaced with Radial Trailer Tires

Updated 09/27/2019 | Published 09/26/2019

Products Featured in This Question

Loadstar ST185/80D13 Bias Trailer Tire with 13" White Wheel - 5 on 4-1/2 - Load Range D

(2699)

$165.67

Kenda Karrier ST185/80R13 Radial Trailer Tire - Load Range D

(2229)

$127.07

Loadstar ST185/80D13 Bias Trailer Tire - Load Range D

(3774)

$95.76

Question:

I have bias ply trailer tires and ordered radials they should fit ok right the I ordered the same size in the radial?

asked by: Mark K

Expert Reply:

Yes, as long as the actual tire size is the same, a radial ply tire like the Kenda ST185/80R13 # AM10208 will fit onto the wheel just the same as the bias alternative # AM1ST79 it's replacing. Radial trailer tires differ from bias models due to the 90 degree angle the cords run to the direction of travel (compared to a 32 degree angle on bias). This allows radials to flex a bit more for better ground contact and stability.

The physical fit onto an existing wheel and trailer suspension setup is identical though.

When making this kind of change you will just want to make sure that all the tires on the trailer are now radial models. Mixing bias and radial tires on the same trailer can lead to uneven tread wear and possible heat build up.

expert reply by: Chris R