Quote Originally Posted by az3579 View Post
Eco tires? On an M3? Even if it's a daily, that is completely pointless... lol

This past time on the track in June was the first time I actually used performance summer tires on the track. Before that I always ran my daily driving set (all seasons) because I was too lazy to pack the car so early and swap the tires upon arrival. The improvement was almost unmeasurable... it's amazing how crappy all seasons are on the track.

Too bad the set of tires I decided to abuse that day cost $1000 for a set. FML...
Luckily they still have life on them. For now.

But... if it came down to doing track days on the most eco friendly crappiest tires ever, I'd still do it, because feeding the addiction is more important.

The cheapest of the performance tires I believe is either Hankook RS3 or Dunlop StarSpecs. They are the most practical for track days.