Hey everybody I just have a quick question.... Im planning on buying new rims and I am considering 20s... I just wanna no if i need to re tune my car cause ill be going with a larger rim... I curently have the 19" Brembo wheels.. Will my speedo be affected?
Depends on the tire size. Changing run diameter will not change speedo, but running a taller or shorter tire will. What size tire do you have now and what size tire do you plan on running? I assume you currently have 255/40r19?
If your running a 255-40-19, any 20 inch tire you choose that is taller will have a very minimal change on your speedo, not enough to worry about imo. 285-30-20 would be the same height I believe, but I would never do a 30 profile unless I had zero wheel gap. 35 profile looks great with 20's.
My nitto invos are a full inch taller than my stock tires, and the revolution difference was a 746 vs 739. I saw zero difference in my speedo. You can't go by the tire calculators. Certain tires have softer side walls and they flex when driven, which increases the rev per mile.
Thank you for your help guys I really apreciate it.... Ive decided to stick with a 19" Vossen cv2 in a matte black....
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