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Discussion Starter · #1 ·
i recently put 18s on my car. the overall wheel and tire diamiter is bigger do i need to recalibrate my speedometer, or my odometer?
 

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correct, i believe you can get it tuned for just that for less then an overall tune, but you might as well just do the whole thing at once :)
 

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i recently put 18s on my car. the overall wheel and tire diamiter is bigger do i need to recalibrate my speedometer, or my odometer?
Honestly just deal with it.. The only way to do it is through some sort of tune. I have heard some dealerships can do it. But haven't actually done it
 

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What size tire are you running? Just curious to know how far off you are from stock. I can't imagine you're more than 3 MPH off when traveling 60 MPH. If you're off by more than that, either go to the dealership and have them do it or get different sized tires.

215/40 is the closest to factory. 225/40 is a little more off but it's more common for tires...bigger selection I believe.
 

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Discussion Starter · #8 ·
the tires i have are 225 40 18.
 
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