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Can Bias Ply Spare Be Used on Trailer with Radial Tires  

Updated 04/22/2019 | Published 04/19/2019

Question:

Is it ok to use a bias tire for a spare on boat trailer tires on it are radial St 185 80r13

1

Helpful Expert Reply:

Yes, as long as the spare tire is the same size, load range (weight rating) and has the matching wheel bolt pattern you can use a bias ply spare to replace a radial main tire for the short distance you'll travel to get the radial repaired or replaced. For example, the 5-on-4-1/2 bias ply # AM31233 can be used as a spare to replace radial # AM31994. You do not want to run the trailer with mixed tires for any substantial distance but to get you to a repair shop it is fine.

expert reply by:
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Adam R

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