[Biturbos4] Winter Tire Help - why two sets of wheels?
cfields72 at hotmail.com
Thu Dec 18 15:16:00 EST 2003
Agreed, winter tires are a must on the S4 if you live in places that get
snow. I have a set of Dunlop Winter Sport M2s mounted on my stock Avus rims.
I also have a set of 18" OZ rims with Toyo summer rubber. I just swap the
two back and forth as the seasons change. Takes about 30 minutes. Not to
shabby...but, damn! those Avus wheels are heavy as hell...28lbs versus 18lbs
on my OZ (not to mention the Toyos are super light versus the Dunlops). The
Dunlops are really good on dry pavement. While they're not super high
performance, I don't have any problem going 100mph on the highway while
still feeling safe. They're great in the snow too. No problems driving up to
Lake Tahoe (drive starts at sea level and reaches over 7,000 feet within 3
hrs from home).
16" rims would be better...not because you get extra sidewall for cushioning
(although that is a nice benefit) but because the tire is actually narrower
(205/55R16) and so the tire penetrates the snow better. The extra width of
the 225/45R17 causes a "ski effect" where the tire "floats" more on the snow
and, therefore, gives less traction. How noticeable the difference is I
can't say because I haven't tried the comparison on the S4. I know that you
can use the stock 16" rims from the Audi A6 as an alternative that will fit
over the S4 brakes. Some people on AudiWorld do that. However, as someone
mentioned, you can't upgrade your brakes to the 332mm StopTechs.
So far, the Dunlops have been through 1.5 seasons and there is still a lot
of tread left. Seems like they'll last a while. Probably should rebalance
inbetween changes but I don't notice any vibration.
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