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> What tire pressures, for Falken Azenis 615s
billd
post Mar 18 2006, 05:11 PM
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What tire pressures are folks running in 615s for autocross. I've been using 33 front 35 rear hot and am wondering if this is too low. These are 205/50-15s on 5.5 inch Fuchs rims.
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sean_v8_914
post Mar 20 2006, 01:05 AM
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I will not recomend here but rather report my results. the 215s of olde had a more pliable side wall (per falken rep) and the higher pressures helped the tires from rolling. I painted the edge of the tread and side wall to read side wall deflection under cornering. the wear marks on teh paint confirmed this.
when I bought my 615s, one of the guys at Evans sports Arena store had just come back from the product launch presantation for the new 615 Falken Azinis. he was going off proudly about the improved sidewall stiffness and handed me a Co brochure that confirmed this.

Sunday I started the day 7am cold at 26.5 F/R
after 4th lap at around 10ish I was 31f 32.5r The rear is a wee loose
1pm after 2 laps, brad measured the center R temp to 150 with the inner/outter aroud 105 and dropped 1 or 1.5 psi front and rear
I dropped 1.5 seconds. Brad came bach and measured the read temps again showign the rear center hotter than the inner/outter temp and dropped another 1 psi . I found all kinds of traction worth another 1 .41 seconds.
I wish we had used the pyrometer sooner
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Posts in this topic
billd   What tire pressures   Mar 18 2006, 05:11 PM
trekkor   try 39 front and 41 rear. reset before every run....   Mar 18 2006, 05:18 PM
Dave-O     Mar 18 2006, 06:01 PM
Cloudbuster   There seems to be a difference between the older 2...   Mar 18 2006, 11:19 PM
billd   I ran 33 all around today and was pretty pleased w...   Mar 19 2006, 08:05 PM
trekkor     Mar 19 2006, 09:07 PM
itsa914   <...   Mar 19 2006, 09:11 PM
trekkor   I tried to tell him. http://www.914...   Mar 19 2006, 09:22 PM
itsa914   http://www.914world.com/bbs2/html/e...   Mar 19 2006, 09:51 PM
trekkor  
  Mar 19 2006, 09:57 PM
sean_v8_914   I will not recomend here but rather report my resu...   Mar 20 2006, 01:05 AM
sean_v8_914   I think it was about 60 deg ambient temp with fros...   Mar 20 2006, 01:12 AM
Joe Ricard   Sort of a high jack. sorry I got bit by the tire p...   Mar 20 2006, 07:20 AM
billd   <...   Mar 20 2006, 11:08 AM


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