Good time for the discussion. I’m still gutted at missing out on those Volks on AZ. But I’m not in a rush to buy.
I’ve been using this site: http://www.wheelweights.net/ I have no idea how accurate they are though.
The links above are useful, useful to have multiple resources.
After I found out that bee was running 17" Oz Ultras on his old S4 and cleared the brakes, I’m on the lookout for a set of those. Having said that, it was also said that aftermarket 17’s should clear the S4’s brakes. I know 91 is selling his 19’s and on the lookout for 17’s in his quest for world domination.
Questions:
- If you have 2 wheels of the same weight (say 19lbs) but one is 17" and the other is 18", am I right in thinking that the 17" yield the faster acceleration times, because the rotating mass is closer to the centre of the wheel?
- To carry on the theme - what’s the “sweet spot” for (a) 18 inch wheels (say 18x8 for the sake of argument) and (b) 17 inch wheels (17x8) regarding the tyre’s profile/sidewall.
- In terms of load rating, are there any caveats for downsizing the S4’s wheels to 17"? IIRC OEM tyres come with the XL load rating, which my 18" all seasons have. My 17" winters are not XL rated (98 rated).