what is the biggest wheel and tire I can put on my car without major modifications?
2 Answers
You can use this site for plus sizing. It shows the effect on the speedometer and odometer. --- http://www.miata.net/garage/tirecalc.html
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go bigger diameter wheels with low profile tires to HELP cancel out the difference. I put an inch bigger on my car for a while(15" to 16") with low profile tires, and the only issues i had were related to the width.