View Single Post
      12-21-2012, 03:22 PM   #17
CanAutM3
Brigadier General
 
CanAutM3's Avatar
 
Drives: 2015 M4 DCT
Join Date: Jan 2012
Location: Montreal

Posts: 3,535
iTrader: (0)

Garage List
2008 BMW M3  [0.00]
2006 Audi S4  [0.00]
Quote:
Originally Posted by Parkanzky View Post
You can't just consider the wheel weight, but also the weight of the tires. 20" tires will tend to weigh significantly more than a 19" tire and a lot of that weight is at the worst possible place.
Why would the tires weigh more?

For a given rolling diameter, increasing the wheel diameter actually reduces required tire sidewall. This reduction in tire sidewall material is most likely offset by the material needed to compensate for the structure stiffness. But, in my opinion, not to a significant extent.

Comparing different sizes weights on Tire Rack could confirm this...

For example Michelin PSS: 265/40R18=27lb 265/35R19=25lb 265/30R20=26lb 275/35R19=27lb 275/30R20=27lb

Last edited by CanAutM3; 12-21-2012 at 04:00 PM.
CanAutM3 is offline   Canada
0
Reply With Quote