Originally Posted by Peter K
Cheers Arnoudt, advise welcomed! I'll definitely try and drop the Bar's next time im there.. I did have the intention of experimenting wil lower pressure, but since im not yet so quick through the faster sections, i should probably go for a compromise.. maybe 2.4 rear and 2.6m front (cold) ?
In cold I start: 2.3 front 2.0 rear. Usually after 1 lap (medium outside temperature) front is already at 2.6/2.7 rear 2.2/2.3. After another lap you can add about 0.2 extra. Just take care to not go full-throttle first corners, as the tyres till need to warm up (which they will do quickly given the low pressure)
Particularly in the rain or when it's cold getting some temperature in the rear tyres is difficult. With some extra precaution the first round you can start even lower at 1.8 at the rear.
Tyre pressure is something to test: what do you like, some people prefer more pressure others don't. Try what you like
2.35 rear works well for me at the back: a lot of grip (Robert tested this week (in my 156) and liked it too). Also important: allignment of the wheels obviouly. Differs a lot per person (what they like), I drive with (+) 12 minutes at the front and (+) 16 at the back. Quite conservative settings, nice for the Ring, not so good for tracks like Zolder
(there I would go -12 to 16 (wet/dry) at the front and zero at the back)
http://www.extreme-machines.nl/images/faq/alignment.gif
With the Q2 (read: more grip) I am going to try at 2.8/2.9 at the front to see if I still have enough grip on the track.
I like all the testing/trying a lot: the differences are bigger then peopel often think, what is does to your car. As said, Robert was amazed by the difference between his GTA and my 156.