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what PSI should I use to inflate a 15 inch tire

Answers from the Automotive Experts

Denise Koeth, Managing Editor at Tire Review Magazine Without knowing the exact tire brand/size, it*s hard to give a definite number. The average of most light truck tires is a recommended 35 psi with a maximum inflation pressure of 44 psi. The psi could also very based on how you plan to use the vehicle, like on-road vs. off-road. For typical, on-road driving 35 psi should do the trick.

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