Tire pressures & alignment redux...

[erok]

I went to the San Diego autox yesterday to check it out and run w/ the new wheels & tires.

Hot tire pressures in my new 205/50/15 Victoracers were 40psi front, 36psi rear. The car balanced very well but was definitely rolling the tires onto their sidewalls. I noticed that the shoulders of all four tires were much more worn than the insides.

I could also feel that the outer edges of the front tires especially were much hotter than the inner edges. Alignment is -1.5

[Karim]

u should be fine with -2 on the front, i will be getting -2 front and 1.5 back withen the next 2 weeks or so that is a pretty commen recomendation most celica autoxers.

Karim

[silver2001gts]

I suggest 45psi front, 25psi rear. Run -2.0 front camber and -1.5 rear camber. Try 1/8" toe out in front and 1/8"-1/4" toe in at the rear.

I ran -2.1° front camber and got 30K miles out of the stock GT-S Yokohamas. Inside of tires were not work any more than the outside. Middle was worn the most, indicating that I ran the pressure too high. For autocrossing, I always used my Kumho Victoracer V700 tires.

[nxracer]

Pressures:
I used to run my V700's at 43 in front and 25 to 30 in back.

Camber:
-2 degrees will not really hurt you street tires very much. I replaced my RE-92's at 37,500 miles (all but 2,500 with -2 camber). The tires still had at least 5,000 miles left on them.

[erok]

Thanks.

[dara323]

I still have -2 camber on my GTS with 27K mi and have had no adverse affect.

I ran my Victoracers on 205/50/15 last season. With 40 front and 35-36 rears. Watch for the arrows on the sidewalls. If the rollover just meets the arrow, you'll be fine. If it's going beyond the arrows, reduce pressure.

Dara

[scapamouche]

Less pressure on the Kumhos reduces rollover???

Or am I just misunderstanding you?

[NoCones]

I would say the opposite...too much rollover, increase pressure...

[preparedcivic]

I ran the same tire last year for over 100 runs from full tread with -2 in the front, -1.5 in the rear, 1/16 out in front and 1/16 in in rear.

43psi front, 33 psi rear.

YMMV :burnout: