lowering tire pressure at the track?

G PURE 260 STANG T · 03-20-2007, 08:23 AM

i was thinking the other day if i should lower my tire pressure in the back i dont have dr's or anything i have bfg kdw tires 255/45/17 in the back would it help any if i took out some pressure?

96gtstang · 03-20-2007, 03:44 PM

ive heard that if you drop psi on a street tire, you end up giving the tire a "cupping" effect and actually end up with less tread making it to the ground..drag radials are a different story tho 4 sho...but also realize that to much pressure will do somthing similar as ur tread would end up wrapping around the sides...i stick with 30 psi all the way around...

r3dn3ck · 03-20-2007, 04:00 PM

that's my take on it. lower pressure in a drag tire or slick is ok but street tires will probably lose a little something on the launch if it's dropped too low. I know of a few guys that like to drop it to mid-20's but most street radial guys I've been around are too lazy to bother... they just say fugg it and run what they brung

ShapeShifter · 03-20-2007, 04:35 PM

Quote:

Originally Posted by 96gtstang

ive heard that if you drop psi on a street tire, you end up giving the tire a "cupping" effect and actually end up with less tread making it to the ground..drag radials are a different story tho 4 sho...but also realize that to much pressure will do somthing similar as ur tread would end up wrapping around the sides...i stick with 30 psi all the way around...

+1 30psi in mine 24/7

spike_africa · 03-20-2007, 06:38 PM

use whatever psi makes the tire have full contact on the ground (this should be the same psi you use on the street). This is for street tires only.

G PURE 260 STANG T · 03-21-2007, 06:35 AM

alright cool cause i saw a couple guys at the track dropping the psi in street tires but im not ill just keep em at 30
thanks guys

03-20-2007, 08:23 AM	#1 (permalink)
G PURE 260 STANG T I HEART MUSTANGS Join Date: Jan 2006 Location: new jersey Posts: 223	lowering tire pressure at the track? i was thinking the other day if i should lower my tire pressure in the back i dont have dr's or anything i have bfg kdw tires 255/45/17 in the back would it help any if i took out some pressure? __________________ I LOVE THE SMELL OF V8 IN THE MORNING!! MODS- slp lm1 catback vrs off road x-pipe mac long tubes upr cai pro products plenum pro products 75-mm t-body steeda short shifter frpp 4.10 gears sct xcal2 93 octane tune

03-20-2007, 06:38 PM	#5 (permalink)
spike_africa Administrator Join Date: Sep 2004 Location: Orlando,Florida Posts: 7,209	use whatever psi makes the tire have full contact on the ground (this should be the same psi you use on the street). This is for street tires only. __________________ Dustin 2002 GT Mustang 5-Speed Drag Radials,Sprayed,Powershifted WOOO HOOOO!

03-21-2007, 06:35 AM	#6 (permalink)
G PURE 260 STANG T I HEART MUSTANGS Join Date: Jan 2006 Location: new jersey Posts: 223	alright cool cause i saw a couple guys at the track dropping the psi in street tires but im not ill just keep em at 30 thanks guys __________________ I LOVE THE SMELL OF V8 IN THE MORNING!! MODS- slp lm1 catback vrs off road x-pipe mac long tubes upr cai pro products plenum pro products 75-mm t-body steeda short shifter frpp 4.10 gears sct xcal2 93 octane tune

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03-20-2007, 03:44 PM	#2 (permalink)
96gtstang Senior Member Join Date: Mar 2006 Location: cleveland, ohio Posts: 467	ive heard that if you drop psi on a street tire, you end up giving the tire a "cupping" effect and actually end up with less tread making it to the ground..drag radials are a different story tho 4 sho...but also realize that to much pressure will do somthing similar as ur tread would end up wrapping around the sides...i stick with 30 psi all the way around...

03-20-2007, 04:00 PM	#3 (permalink)
r3dn3ck Wowbagger hates me too! Join Date: Nov 2005 Location: Magrathea/California Posts: 6,865	that's my take on it. lower pressure in a drag tire or slick is ok but street tires will probably lose a little something on the launch if it's dropped too low. I know of a few guys that like to drop it to mid-20's but most street radial guys I've been around are too lazy to bother... they just say fugg it and run what they brung