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I need some help with tire sizes. I'm looking to buy some wheels off my friend. Theyre just some cheap universal wheels he had on his crx. I want to swap them out with my stock steelies on my 02 em2. The wheels are gonna need new tires and the current ones are 205/55/r15. The tires on my car are 185/65/r15. I want to know if it's possible to swap my current tires over to the new wheels. thanks in advance.

 
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google son.

http://www.miata.net/garage/tirecalc.html

 
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I tried googling it and a bunch of those calculators came up. I figured they would only tell me how the size of different tires would affect my speedometer. thanks though

 
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ya need to know the wheel width to know if 185 will be stretched or not

 
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Where I would start is finding out the width on the wheels you are looking at getting. I believe that the stock 15" Honda wheel should be 6" wide if I can remember right.

Here is a good thread to take a look at if you have not already:

https://www.civicforums.com/forums/4...rakes-faq.html

Also you may want to take a look at this pic it will help explain tire sizes more:

http://www.wheelsnext.com/images/info/relationship.jpg

The link Running Riot gave for the tire calculator is the best one I have used. If you look at a few measurements you should be able to figure everything out. Good Luck!