General Tech Ask model specific questions in the appropriate category below. All other general questions within.

TIRE psi

Thread Tools
 
Search this Thread
 
Old Dec 5, 2005 | 03:30 PM
  #1  
01musgt's Avatar
01musgt
Thread Starter
1st Gear Member
 
Joined: Sep 2005
Posts: 64
From:
Default TIRE psi

i was wondering if any one can give me tips on what psi the front and rear tires on my 01 mustang should be when i race at the tracks

im looking to drop my E/T
Old Dec 5, 2005 | 03:50 PM
  #2  
nitrous_bob's Avatar
nitrous_bob
6th Gear Member
 
Joined: Oct 2005
Posts: 6,028
From: st clair shores MI
Default RE: TIRE psi

42-45 in the front, and pretty close to tire rating for the rears, maybe drop 5-7 psi only.

if you drop too much pressure in a radial, it will cause the center of the tire to "bow" inwards, and you actually get less traction

getting it WOT is the hard part w/ a stick...have to slip the clutch while keeping the r's up.

just takes practice, or get some sticky tires for the track.

Old Dec 5, 2005 | 04:43 PM
  #3  
Vash the Stampede's Avatar
Vash the Stampede
3rd Gear Member
 
Joined: Feb 2005
Posts: 524
From:
Default RE: TIRE psi

i have 40ish PSI in the front. and 20 in the rear. my rear tire is actually a 285. its kinda small for my rear wheels. but i was too cheap to get 315's. max pressure on my tires is 50 or 55.

not sure how much your supposed to flatten the rear.. but i did 20PSI in the rear and the tires look like it still has its form.. doesn't look flat at all.
Old Dec 5, 2005 | 05:34 PM
  #4  
MikeHawke's Avatar
MikeHawke
Retired MF Moderator
 
Joined: Apr 2004
Posts: 7,156
From: I live in Canada, eh
Default RE: TIRE psi


ORIGINAL: Vash the Stampede

i have 40ish PSI in the front. and 20 in the rear. my rear tire is actually a 285. its kinda small for my rear wheels. but i was too cheap to get 315's. max pressure on my tires is 50 or 55.

not sure how much your supposed to flatten the rear.. but i did 20PSI in the rear and the tires look like it still has its form.. doesn't look flat at all.
If it's not a drag radial or slick, you gain nothing by reducing the tire pressure. You do, however, increase the risk of tire failure.
Old Dec 5, 2005 | 06:25 PM
  #5  
Tim37's Avatar
Tim37
4th Gear Member
 
Joined: Sep 2005
Posts: 1,925
From: AR
Default RE: TIRE psi

if you look on the sid wall there will be a max psi usualy around 45psi set your front to that.

on the back drop them down to about 28 psi don't drop your rear below about 26 its not good on a standard radial tire and you won't get any more out of it. thats what i find works best for me
Old Dec 5, 2005 | 07:30 PM
  #6  
OnyxCobra's Avatar
OnyxCobra
6th Gear Member
 
Joined: Nov 2005
Posts: 8,467
From: Rochester, NY
Default RE: TIRE psi

ORIGINAL: MikeHawke


ORIGINAL: Vash the Stampede

i have 40ish PSI in the front. and 20 in the rear. my rear tire is actually a 285. its kinda small for my rear wheels. but i was too cheap to get 315's. max pressure on my tires is 50 or 55.

not sure how much your supposed to flatten the rear.. but i did 20PSI in the rear and the tires look like it still has its form.. doesn't look flat at all.
If it's not a drag radial or slick, you gain nothing by reducing the tire pressure. You do, however, increase the risk of tire failure.
thats what ive always heard too, it also creates uneven tirewear.

Vash- Low profile tires dont always look flat when they have low psi, so sometimes its hard to tell w/ low profile, esp if you have a really stiff sidewall.
Old Dec 5, 2005 | 08:24 PM
  #7  
MikeHawke's Avatar
MikeHawke
Retired MF Moderator
 
Joined: Apr 2004
Posts: 7,156
From: I live in Canada, eh
Default RE: TIRE psi


ORIGINAL: OnyxCobra

ORIGINAL: MikeHawke


ORIGINAL: Vash the Stampede

i have 40ish PSI in the front. and 20 in the rear. my rear tire is actually a 285. its kinda small for my rear wheels. but i was too cheap to get 315's. max pressure on my tires is 50 or 55.

not sure how much your supposed to flatten the rear.. but i did 20PSI in the rear and the tires look like it still has its form.. doesn't look flat at all.
If it's not a drag radial or slick, you gain nothing by reducing the tire pressure. You do, however, increase the risk of tire failure.
thats what ive always heard too, it also creates uneven tirewear.

Vash- Low profile tires dont always look flat when they have low psi, so sometimes its hard to tell w/ low profile, esp if you have a really stiff sidewall.
I have seen it. There are always kids at the track I frequent who are letting the air out of their stock radials and doing huge burnouts with them.

They don't listen. I can't tell you how many times I have seen them pop the bead. Even the ones who manage to get off the line don't realize the effect that having 2 flat rear tires has at 90+ MPH under full throttle.

I'm not saying that Tim37 is incorrect. He is absolutely correct. It does not hurt to drop a few pounds out of the tires. That CAN actually help you a little bit, but keep it reasonable and safe. You really don't want to have the *** end start wandering and hit the wall. It's ugly and usually your insurance won't cover you for accidents at the track.
Old Dec 6, 2005 | 02:54 AM
  #8  
doobs's Avatar
doobs
4th Gear Member
 
Joined: May 2005
Posts: 1,390
From:
Default RE: TIRE psi

Vash,

285's aren't that bad. Their a lot better than 225's and 235's[8D]
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jwog666
Pipes, Boost & Juice
11
Dec 27, 2021 08:09 PM
CS2007
General Tech
8
Jun 25, 2019 09:45 PM
TCStangerv6
Street/Strip
12
Oct 11, 2015 05:57 PM
KingRando
2005-2014 Mustangs
5
Oct 2, 2015 08:06 AM
uedlose
The Racers Bench
4
Oct 1, 2015 08:31 PM




All times are GMT -5. The time now is 11:59 PM.