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Author
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Topic: street tire psi for 1/4 mi. pass
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MACK.GT
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Member # 10461
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posted
 
 
for those who've experimented with this setting,, what has worked better then 32psi , I have a stock rear suspension 245/45/17 tires.
Posts: 446 | From: 510 | Registered: Nov 2010
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SLOW95GTS
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Member # 10365
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posted
Usually with street tires it isn't a big deal, but i usually go with 28-30 on my 18's.
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1995 Mustang GTS 5.0 - "minor mods"
Posts: 1199 | From: East Bay | Registered: Oct 2010
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Blind
2.3L
CAFords OG
Member # 3052
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posted
on street tires you want the tires pumped up to normal spec (32).
the reason is the sidewalls of the tires - the outside edge - is very stiff.
Lowering the psi will make the middle softer, so it will sag inwards compared to the edges, meaning less tire will touch the ground.
Easy way to tell is to do a quick burnout, if the psi is right you'll see the full tire contact leave marks.
slicks and d/r's get aired down more because the sidewalls are softer and will let the tire bite into the ground more when they have less pressure.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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4 CAM FOX
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Member # 11891
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posted
Blind hit the nail on the head, airing down your street tires is a moot point.
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"The clutch is on the left. Gas on the right."
"What's this one in the middle?"
"It's for pussies."
Posts: 1798 | From: NOR*CAL | Registered: Apr 2012
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racsirx
CAFords OG
Member # 1710
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posted
I don't know about tires today but the old bfgoodrich use to work in the 1.8-1.9 at 18-20psi for us back in the day, I think I remember member "greek" going 11s this way.
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88 Saleen #564
88 GT 331 NOVI2000
88 Coupe TURBO 9.75@142
95 Cobra R #75-SOLD
06 F250
13 BMW AH3
17 GT350 #5556
GOD'S NOT DEAD
Posts: 20750 | From: Concord & Pittsburg, CA | Registered: Aug 2002
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90GT510
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Member # 9199
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posted
quote:
Originally posted by racsirx:
I don't know about tires today but the old bfgoodrich use to work in the 1.8-1.9 at 18-20psi for us back in the day, I think I remember member "greek" going 11s this way.
+1 I've had better runs with lowering my tire pressure and adding a burnout even on street tires believe it or not. But yea ^^ ur right 18-20 psi is what we usually do at the track too.
[ 2014-09-12, 07:35 AM: Message edited by: 90GT510 ]
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Stay Sydewayz
Posts: 1725 | From: East Bay/Dallas, TX | Registered: May 2009
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Stangs R Us
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Member # 4495
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posted
It really depends on the tire , get a pair of cheap rims and some drag radials BFG or MT and you can still run them on the street. I think the best 60 ft I cut on bfg's was a 1.5
Posts: 3100 | From: sacramento | Registered: Aug 2005
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