Auto-X Tire Pressure on RE050's

ResIpsa · 10-14-2009, 09:09 AM

What tire pressures have you guys been running for autocross?

Last week I forgot to adjust for the cold temps and noticed that I was running 31 PSI up front and 33 PSI in the rear. Funny thing, the Bridgestones are so stiff that I did not even roll over onto the side walls. Of course I know this is way to low.

pgrmstr · 10-14-2009, 10:12 AM

I was running 38F and 30-33R

pgrmstr · 10-14-2009, 10:16 AM

It needs more grip in the rear. The car turns in GREAT, transitions well, but you have to be gentle on the gas....as it will want to slide the rear a lot under throttle while doing any kind of turning. The brakes are awesome! Looking forward to R compounds!

pgrmstr · 10-14-2009, 10:19 AM

I did notice inside wheel spin trying to be easy on the throttle coming out of a turn around...just a little gas will get it spinning without engaged the VLSD, so hoping a big ole fat hoosier will allow us to get on the gas harder and get the diff to lock, but from the sound of the 350 guys, it looks like inside rear spin is gonna be something we need to live with without a real LSD

ResIpsa · 10-14-2009, 10:28 AM

That makes a lot of sense. I was going in the wrong direction with my tire pressures. Rear grip was such a problem that I tried to adjust to a looser setting that allowed me to enter a corner a little faster and stay off the gas.

Of course, this just makes you slower...

pgrmstr · 10-14-2009, 10:30 AM

ResIpsa · 10-14-2009, 06:17 PM

Beautiful Pic!

10-14-2009, 09:09 AM	#1 (permalink)
ResIpsa Track Member Join Date: Apr 2009 Location: Virginia Posts: 564 Drives: 09 RACING HEN Rep Power: 338	Auto-X Tire Pressure on RE050's What tire pressures have you guys been running for autocross? Last week I forgot to adjust for the cold temps and noticed that I was running 31 PSI up front and 33 PSI in the rear. Funny thing, the Bridgestones are so stiff that I did not even roll over onto the side walls. Of course I know this is way to low. __________________ The Reed Law Firm; Michael Fasano VA Attorney and Counselor at Law: A Virginia Traffic, Criminal, and Family Lawyer.https://reedlawva.com/

10-14-2009, 10:28 AM	#5 (permalink)
ResIpsa Track Member Join Date: Apr 2009 Location: Virginia Posts: 564 Drives: 09 RACING HEN Rep Power: 338	That makes a lot of sense. I was going in the wrong direction with my tire pressures. Rear grip was such a problem that I tried to adjust to a looser setting that allowed me to enter a corner a little faster and stay off the gas. Of course, this just makes you slower... __________________ The Reed Law Firm; Michael Fasano VA Attorney and Counselor at Law: A Virginia Traffic, Criminal, and Family Lawyer.https://reedlawva.com/

10-14-2009, 10:30 AM	#6 (permalink)
pgrmstr Base Member Join Date: Mar 2009 Location: PA Posts: 131 Drives: 09 BS 370z Sport 6MT Rep Power: 16	Digesting a cone - DOH

10-14-2009, 06:17 PM	#7 (permalink)
ResIpsa Track Member Join Date: Apr 2009 Location: Virginia Posts: 564 Drives: 09 RACING HEN Rep Power: 338	Beautiful Pic! __________________ The Reed Law Firm; Michael Fasano VA Attorney and Counselor at Law: A Virginia Traffic, Criminal, and Family Lawyer.https://reedlawva.com/

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10-14-2009, 10:12 AM	#2 (permalink)
pgrmstr Base Member Join Date: Mar 2009 Location: PA Posts: 131 Drives: 09 BS 370z Sport 6MT Rep Power: 16	I was running 38F and 30-33R

10-14-2009, 10:16 AM	#3 (permalink)
pgrmstr Base Member Join Date: Mar 2009 Location: PA Posts: 131 Drives: 09 BS 370z Sport 6MT Rep Power: 16	It needs more grip in the rear. The car turns in GREAT, transitions well, but you have to be gentle on the gas....as it will want to slide the rear a lot under throttle while doing any kind of turning. The brakes are awesome! Looking forward to R compounds!

10-14-2009, 10:19 AM	#4 (permalink)
pgrmstr Base Member Join Date: Mar 2009 Location: PA Posts: 131 Drives: 09 BS 370z Sport 6MT Rep Power: 16	I did notice inside wheel spin trying to be easy on the throttle coming out of a turn around...just a little gas will get it spinning without engaged the VLSD, so hoping a big ole fat hoosier will allow us to get on the gas harder and get the diff to lock, but from the sound of the 350 guys, it looks like inside rear spin is gonna be something we need to live with without a real LSD