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02-10-2013
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#1 |
  
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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1/2 mile WOT vs. tire pressure?
Saw this on CF ZR-1 page, and it was news to me. Thought I would share w/ y'all.
http://www.tirerack.com/tires/tirete...adj_Zspeed.jsp Your Thoughts??? p.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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02-10-2013
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#2 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,701
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Re: 1/2 mile WOT vs. tire pressure?
Paul,
Looks like 40psi would be good overall. I think this chart addresses sustained speeds. We won't be up there for very long.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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02-10-2013
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#3 |
Join Date: Nov 2006
Location: dayton,ohio
Posts: 425
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Re: 1/2 mile WOT vs. tire pressure?
Interesting
 looks like GY GSD3 max load is lowered to 1488 lbs. at 180 mph for the front tires. Still sounds plenty high, but how much downforce is there on a stock setup at 180.
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[FONT=Comic Sans MS][COLOR=red]"I wanna go fast!!"[/COLOR][/FONT] [FONT=Comic Sans MS][COLOR=#ff0000]-- Ricky Bobby[/COLOR][/FONT] |
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02-10-2013
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#4 |
 
Join Date: Jul 2005
Location: Cresson, TX
Posts: 970
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Re: 1/2 mile WOT vs. tire pressure?
When we were doing the mile at Nellis AFB a few years back we used those charts. Good info...
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Ron Hanselman Founding Member #80 CM Lifetime Member #1093 1991 #383 Twin Turbo 1993 #099 Ruby, Jeal 368 w/Snake Skinner body 1961 White with Red Int |
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02-10-2013
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#5 |
Join Date: Dec 2012
Location: Chester, Virginia
Posts: 457
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Re: 1/2 mile WOT vs. tire pressure?
In road racing at VIR their standard club's inflation info to new road race course racers with three straights on the course was to add 3-5 pounds to your normal tire pressure which I believe was to keep the sidewalls stiffer and from less flex on cornering. The chart referenced seems like a lot to me and I have a question.
Does it presume high or low aspect ratio tires? I'd think it would be slightly different for the two. With our 40 and 35 aspect ratio tires mine with very small changes in air added seem to make pretty solid changes in air pressure and are much stiffer in terms of side flex with the shorter aspect sidewalls we have. My 76 is 255 x 60 tires and now we're 275 and 315 and 35 and 40% which are pretty rigid on the car comparatively. Lance P..
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Lance Pearson Chester, Virginia [COLOR=red][I]'76 L48 four speed[/I][/COLOR] [COLOR=red][I]'91 ZR-1 #00682[/I][/COLOR] Net Registry #1461 |
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