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Old 06-08-2015, 09:38 AM   #5
Dlirium
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Join Date: Oct 2013
Location: San Jose, CA
Posts: 583
Garage
Quote:
Originally Posted by Blackcloud View Post
I just upgraded my 2004 base Box to Tire Rack Cup 4 17 inch wheels and a set of Potenza RE-11's with 3 DE days on them. The gentleman i bought them from said he used 30 PSI in the front and 36 PSI in the rear. My question is: Should I run 34/38 or some similar ration for auto-X events.
Short answer - HELL NO!

That is WAY too much pressure for an AX, but as others have pointed out, you will need to experiment. I run as low as 22/24 lbs up to 26/28 on my Toyo R888's. Keep dropping 2 lbs until you get too much tire roll. Get a Harbor Freight Air tank so you can put more air in if you go too low :-)
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