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Correct tire size question
I recently purchased a 1999 boxster base. It came with wheels I believe came off a cayman. The tire sizes are front 235/40 ZR18. Rear 265/40ZR18. I checked the speed with my gps and it’s within 1 mph of what the speedometer reads. Are these tires too wide? No problems with any kind of rubbing on the frame or fenders.
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