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Discussion Starter · #1 ·
I'm thinking of adding 20 inch wheels to my 2009 V6 mustang. Have a few concerns that maybe someone might know the answer.

Does adding the wheels change the mpg since the wheels will be extra weight?
Do I need to change the suspension at all?
Will I need to have the speedometer re-calibrated?
Any other concerns that I haven't thought of that someone else experienced

Thanks in advance​
 

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1965 Mustang coupe
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Increase in rotating mass may drop yourr MPGs a little. If the tire diameter is significantly different from OEM, you will need to have it recalibrated.
 
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