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U7145 Tire\Wheel size change

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Post Mon Apr 08, 2013 8:32 pm

Posts: 12
Hi, I went from 235/55-17 to 235/50-18. So my question is do I need to change this in my tune? And what are the values I'm needing?
Thanks

Post Mon Apr 08, 2013 11:45 pm

Posts: 63
MattC74 wrote:
Hi, I went from 235/55-17 to 235/50-18. So my question is do I need to change this in my tune? And what are the values I'm needing?
Thanks

I think thats the same overall diameter. Best thing to do is go to the tirerack website and look-up the specs for the tire, you'll see "revs per mile". Then reload your tune, choosing modify before you install it and enable gear/tire change and change the revs per mile. The same size tires will have a slightly differant revs depending on the make/model of the tire, so its best to look it up on tirerack. GL

Post Thu Apr 11, 2013 3:29 pm

Posts: 12
Fun4me wrote:
MattC74 wrote:
Hi, I went from 235/55-17 to 235/50-18. So my question is do I need to change this in my tune? And what are the values I'm needing?
Thanks

I think thats the same overall diameter. Best thing to do is go to the tirerack website and look-up the specs for the tire, you'll see "revs per mile". Then reload your tune, choosing modify before you install it and enable gear/tire change and change the revs per mile. The same size tires will have a slightly differant revs depending on the make/model of the tire, so its best to look it up on tirerack. GL



Cool thanks for the info.

Post Tue Mar 10, 2020 7:32 am

Posts: 1
In this tire size comparison guide tirewheelguide, you can find the best tires for your car.


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