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Old 09-05-2012, 01:04 PM   #6 (permalink)
RiderofBikes
EcoModding Apprentice
 
Join Date: Apr 2012
Location: kansas city, mo
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Pantry Boy Supreme (pbs) - '04 Volvo S80 T6 Premier
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Quote:
Originally Posted by Dcarver View Post
I'm looking to downsize my tires from 275/60/17 to probably 255/60/17. I figure this will effectively up my gear ratio from 3.55 to around 3.73ish.
Shows your only changing the Width of the tire and not the Diameter. For towing capacity and safety, youd be better off keeping the stock width, of 275/ and just changing the Sidewall Hieght(changing ratio) /55R17 or /50R17. If thats what your are trying to get at?

Refer to Post #7 by MetroMPG
http://ecomodder.com/forum/showthrea...tml#post324301
Helpful RR chart on the second link, talks more about width of the tire.
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