So I replaced one of my Michelin Pilot Sport All Season 4s on my Sportwagen due to damage (Discount Tire certificate so it was free) before swapping out my summer tires last month. So currently my tire tread depths are:
1@10/32 (rear)
1@6/32 (rear
[email protected]/32 (front)
This is a gen 5 Haldex awd system - open diffs and a pump/clutch pack to engage/transfer torque to the rear axles at varying levels depending several variables (it's not just "when the fronts slip"..it's any time you give it gas at some level). I've of course read all of the various opinions on this but and never found any concrete guidance from VW/Audi on the max difference either front to back or on a single axle w/r to overall diameter difference that is ok.
Here's my math, I don't think 1.3% is enough to lose any sleep over...it drives normally, logging the Haldex bits is all normal as well. I think next fall when these go back on I'll probably replace 3 of them as the fronts should get down below 4 before putting summer tires back on in March and at that point they pretty well done...maybe I'll be wrong and these can get another winter out of them, I only drive about 3-4K total with these on a year and they have around 17K on them total at this point.
1@10/32 (rear)
1@6/32 (rear
[email protected]/32 (front)
This is a gen 5 Haldex awd system - open diffs and a pump/clutch pack to engage/transfer torque to the rear axles at varying levels depending several variables (it's not just "when the fronts slip"..it's any time you give it gas at some level). I've of course read all of the various opinions on this but and never found any concrete guidance from VW/Audi on the max difference either front to back or on a single axle w/r to overall diameter difference that is ok.
Here's my math, I don't think 1.3% is enough to lose any sleep over...it drives normally, logging the Haldex bits is all normal as well. I think next fall when these go back on I'll probably replace 3 of them as the fronts should get down below 4 before putting summer tires back on in March and at that point they pretty well done...maybe I'll be wrong and these can get another winter out of them, I only drive about 3-4K total with these on a year and they have around 17K on them total at this point.
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