A6 2.7TQ impressions

[Mark Sirota]

Lawrence C Leung wrote:
> US car is govenor limited (not HP or gearing). Done so that the
> car could be fitted with H-rated rubber, quite possibly the H
> rubber availible is for either: (1) All-Season (M+S rating) tires,
> a US lazy thing, (2) smoother ride, as H rubber has less stiff
> sidewalls compared to V or Z.

(1) There are lots of M&S rated tires in higher speed ratings --
a quick search on tirerack.com for 225/50-16 shows more than 10 in
V, W, and Z.

(2) Suggesting that speed rating has any relationship to sidewall
stiffness is to make a rash generalization.  I'm sure there are
lots of H-rated tires that have much stiffer sidewalls than other
Z-rated tires.

Speed rating is about heat dissipation, and that's it.  Yes, one
way to reduce heat buildup is to stiffen the sidewall, but it's not
the only way.

Mark