1 X 265 70 17 121Q COOPER DISCOVERER STT PRO MUD TERRAIN. ARMOR-TEK3 CARCASS CONSTRUCTION Cooper's STT PRO It's the heavy duty carcass that makes the new STT PRO so special. A nail, a stake or sharp outback grass can push against the sidewall cord, deflect off and penetrate through the weakest point, (the rubber) and you get a flat.
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