Please let me know what pressure you are running for auto-x, and what tires you are running. is anyone running street tires? I'm running my first event on the 26th at dctc in my 06' wrx, and I'm bone stock yet. Please let me know.
Define "street tire", I think that'd be a pretty broad category depending on who you talk to in here Tire pressures are going to depend on a lot of factors, there isn't one pressure that's going to be correct across the board. I'd check around on Nasioc and search to see what other people with a stock setup are running.
okay, that is a broad range... they are the tires that come stock, potenza all season radials of some type. my car is bone stock 06' wrx tr, sock ride hight, but.... those tires are on O.Z Racing ultralagera 17x8, so the tire are rolled out euro style, kinda goofy.... thats how I bought it though.... does that help?
I'd shoot a PM to Shane86 or Zak (Esperunit) about this, they're our resident autoxers and would be able to point you in the right direction. That might not be an optimal wheel/tire width combination (actually, an RE92 in a competition setting is never optimal) but you can always upgrade.
He'll upgrade after he burns through them, lol It will be pretty high, think 50 psi. It will be tire dependent. On a good tire with a stiff sidewall, you can run a bit lower pressure as the tire is build for the high loads. However, an all-season tire of the generic kind will have to be very high just to not run on the sidewall. You can test this with chalk. Draw a few lines around the tire, tread to sidewall. Corner at full tilt and see how far down the chalk rubs off. It should stay off the sidewall. If not, you need more pressure. The front and rear pressures will not need to be the same either. There's more weight on the front and camber's worse up there too. You can usually get away with less pressure in the rear. Actually, it's kind of preferred, at least by me, lol. The extra relative movement in the rear from the lower pressure will make the car more tossable in corners. I've always liked 3 psi less in the rear in my Forester, but I'm not sure what the best offset is for the sedans.
YUP.... DEALER DID THAT TO "SELL THE CAR", did that and put some cool rally graphics on the side, skimped on tires though..... I'm thinking I might have trouble with the bead around the tire, or might have side wall issues with the roled out tire, Might scuff a rim.....:eek4:
Run at least 45 front 48 rear to avoid rolling the tire over too much. Safer would be to start with front and rear pressures as high as is listed on the tire sidewall, probably 51 psi, then use chalk on the side of the tire to see how much they are rolling over and lower pressures as needed. Stop by my car on the 26th and introduce yourself. I run a blue '96 Impreza Coupe in the XP class (#545), and I'm at almost all the local events.
I ran my 17" re92s at 48 front, 46 rear for a few events last year... pretty scary at stage 2 and pretty much suicidal with vf39. Might want to budget for new tires if you havent already. Use speedyham's advice and chalk them tho.
Take a pic. How bad is it? I'd probably try to stay quite high just so you're not sitting on the rims in corners. It may be fine. I just don't know how bad your tire/rim mix is.
