This article is from the VW Performance FAQ, by with numerous contributions by Jan Vandenbrande others.
A:Examples of pressures used:
[Jeffrey M. Mayzurk] On my DSP Scirocco (2300 lb, 55/45
distribution), I usually run with the fronts at around 38
and the rears at 30. This is plenty of pressure to keep
the tires from rolling over, and I like theway it
handles.
jstulen@eis.dofasco.ca (James Stulen):
I run an 84 Rabbit GTI (ok, it's not quite an SLC) with
some mods, on 185/60/14 RE71S tires. I use 36-38 in the
front, some time as high as 40 if they're scrubbing to
much. I use 26-30 in the back, any more and they just
don't 'work', very tail happy then.
On the '87 GTI 16V with 218 or 206-compound BFG Comp T/A
R1's, I ran 36 in front and 22 in back. Note that these
tires require MUCH lower pressure than street tires.
 
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