tire pressure and understeer

[MotherTucker]

I run 36 rear and 33 fronts on the track for hot tyre

That's what I run also.

mt

[photonscience]

drop the front to 36 and you'll see a huge difference

Thanks Kfab, I am running 36 front and rear (warm tires) and understeer is far less noticeable. Still don't understand why Audi specs 45 front 41 rear (cold)

[the_buch]

I run 36 rear and 33 fronts on the track for hot tyre pressure

What do you run on the street, and is it different between your V8 and V10?

[the_buch]

Thanks Kfab, I am running 36 front and rear (warm tires) and understeer is far less noticeable. Still don't understand why Audi specs 45 front 41 rear (cold)

I think most manufacturers dial-in some under steer this way because it's safer for most drivers.

[CALBenzo]

Dropping the Zeros would help!

[Nudenut]

Dropping the Zeros would help!

What he said... PSS's FTW IMHO.

[Moggy]

I really like my PSS's, but based upon conversations held over the weekend, I may go to the Pirelli P Zero Trofeo and increase my negative camber a tad.

Supposedly, they can handle the increased load of the negative camber and wear evenly.

I'll be getting to spend some serious 1-on-1 time with Guy Gamba - he's forgotten more about tires than I'll ever know - later this month in Florida. We're both going to the same boat show and if form holds true, we'll talk cars the whole time. Needless to say, we talk boats when we're at the track! :-)

[swansailor]

I started tracking on PS2s then switched to PSS but, based on Guy's advice, I now run Pirelli P Zero Corsas for track (and have had the camber adjusted). On hot days I had found the PSS's to be squirmy under heavy braking; the Corsas work much better under the same conditions and I am getting good wear from them. The PSS are great for every day driving. I will probably upgrade to Trofeos once the Corsas wear out.

[desperado]

Pirelli now offers a slightly updated model of the Trofeo, the "Trofeo R". I'm thinking of trying a set when I wear out the current Trofeos.

http://www.pirelli.com/tyre/ww/en/ca..._trofeo_r.html

P ZERO™ TROFEO R has brand new HAOF (highly aromatic oil free) compounds and a redesigned tread pattern that have produced extraordinary results: on the one hand, a notable improvement in stability and, above all lateral grip in the dry, on the other hand, a notable reduction in wear.