How sensitive is quattro to tread depth?
04-10-2008, 12:05 PM
#1
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How sensitive is quattro to tread depth?
I'm contemplating a fresh pair of track tires on one axle at 6/32 depth. The used tires on the other axle are 3/32.
I can't imagine this would make a difference, but I thought I'd sanity check.
I can't imagine this would make a difference, but I thought I'd sanity check.
04-10-2008, 12:47 PM
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i think f/r difference is better than l/r difference. i also think haldex forgives more than torsen.
that being said, i dont think 3/32 is a big deal for either?
can anyone back me up?
can anyone back me up?
04-10-2008, 01:00 PM
#3
IIRC it has to be within 3% difference.
Our rolling diameter is 25" so 1% would be 1/4", 3% would be 3/4" which is 24/32. 3/32 should be fine.
Disclaimer: I suck at math so everything except for the 3% difference might be wrong.
Disclaimer: I suck at math so everything except for the 3% difference might be wrong.
04-10-2008, 01:32 PM
#5
It's actually the reverse. Torsen acts as an open diff in most circumstances. Haldex is a hard
engagement. I have tested this many times and taking advantage of this behavior on both our cars at the moment
04-10-2008, 02:01 PM
#7
My actual data suggest that if I run 0 to 3% bigger on the rear, no issues. 1% bigger on the front
ESP goes haywire on a turn. ESP off, no issues. Realistically it accounts for tire differences plus the speed differential of the front axle to the rear when turning.
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