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Discussion Starter · #1 ·
I am looking to run a 225/40 18 on a new set of wheels. seeing that the stock is 40r17 and i am going to a 40r18, how far off is this going to put my speedo?
 

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when speedo shows 60, you'll be travelling at 61.1mph
 

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Discussion Starter · #3 ·
Ok Cool. Thanks for the input.
 

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Stock isn't 40/17 it's 215/45/17, but Z's calcs are correct for stock vs. 225/40/18.
 
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