[thstone]

Pilot Supersports are not yet available in 255/40/17.

It seems as more and more performance cars are being delivered new with at least 18" and often 19" or 20" wheels, the selection of performance tires for 17" is starting to lag. More surprising is the immediate availablity of a few sizes in 21" and 22" - I think this tells us where the market is heading!

Here is a break down of available sizes vs wheel size:

17" - 7 sizes available
18" - 19 sizes available
19" - 25 sizes available
20" - 31 sizes available
21" - 6 sizes available
22" - 2 sizes available