Given
74%
while driving a
Audi A6 Avant 2.0TDI
(225/55 R17 W) on
mostly country roads
for 200
average miles
Original Michelin Primacy 3 (AO), had done a good 20,000 miles with a few rotations to even out the wear, but were beginning to loose grip on cold mornings and were down to 2-2.5mm.
So with winter on its way, and plenty of research on all-season tires, it took the plunge and ordered some CC+.
I have only had them on for a couple of weeks, but the wet/dry grip is very good, especial as it has been cold weather. They seem to do ok with water clearing, have had roads with heavy surface water, no issue, and some big puddles, again no issue.
Big disappointment is the noise. Tire shop sent me on my way with 36/36psi front/back, but there was a significant rhythmic drumming/humming from the tires, which increased pitch with speed, and got much worse on corning.
Checked the manual which suggested 41/38psi for lightly loaded, 41/44psi for heavy loaded, on XL M+S tires, so increased to 41 all round. Noise improved, and i can't notice it on the back tires any more, but still on the front.
Increased the front so now on 44/41psi, which made a fractional improvement. I have taken the car up to speed (110) to see if there was an issue with alignment, or balancing but all seemed fine. No vibration, no pulling on cruise, acceleration or heavy braking.
There now appears to be a small amount of premature rounding wear on the leading edge of the outside block, which would typically be a result of under inflation. But as i am at the very max that the manual suggests, i don't want to put any more air in.