Some cold weather ZII advice from Woody Rogers of TireRack. I asked when the NCCAR temp forecast was 20's to 40's. Woody knows that my oem tires are Pirelli all seasons.
Quote:
Dunlop hasn't published any cold temperature warnings for the ZII, so it
should be OK from a cold compound cracking standpoint. If it is wet and
temps are below 45 then you may as well just leave the Pirelli's on. If it
is dry they will work OK, but be prepared for a little chipping and
tearing of the tread compound in the shoulder and leading edges of the
tread blocks. When the compound is that hard it rips away, rather than
wearing in fine particles like a pencil eraser. Just limit the slip angle
when stone cold and you'll be fine. You will also likely feel some
dramatic grip/slip/grip effect, especially if its wet. The breakaway and
regain can be very rapid and rather dramatic in some cases.
Woody also explained that TireRack is the exclusive source for ZII's and Rivals. It basically works better for everyone for such specialty tires which sell in relatively low volume. He didn't mention RS3's
Quote:
We are the exclusive source for the ZII, like the Rival. We cover the vast
majority of that market, and the manufacturers want an easy way to keep
the pipeline full on a very low volume tire. We sell to just about every
tire shop in the country, too. So it's easier to keep them in our
warehouses to ship on a moments notice than in all the different
distribution centers of the manufacturer and all their distributors across
the country. That would (ask Dunlop) result in tires in Memphis but not in
Philly, etc.