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Can I Upgrade ST205/75R15 Load Range C To Load Range D MXS39FR With Bead Balancing?  

Published 10/13/2025

Question:

Is this a good swap from my worn ST205/75R15 C range?

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Expert Reply:

It is, Javier. You’ll stay in the same size ST205/75R15 but move up to Load Range D for a stronger casing and 2,150-lb rating at 65 psi. The radial construction of the # MXS39FR and 87-mph speed rating make highway towing smoother, and the wheel comes bead-balanced, so you don’t need stick-on weights. This is a huge benefit! Most tires on trailers don't get balanced at all, but some folks like to take to a shop or add beads for balancing; this is done already so all you have to do is throw it on the trailer and go!

What type of trailer do you have, and is it tandem axle, 4 tires?

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Andrew N

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