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Tire pressure for nitto DR's?

  • Thread starter Thread starter willys1
  • Start date Start date Mar 8, 2004
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willys1

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Dec 2, 2003
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#1
  • Mar 8, 2004
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I have 16 inch Nitto DR's on my pony rims,on the street I run em at 32psi's. At the track I lowered the pressure to 25,,didnt notice any real difference. If I put it lower,in the teens,wont safety become an issue at 90+ MPH ?
 

willys1

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Dec 2, 2003
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#2
  • Mar 8, 2004
  • #2
Ive heard of guys going 14lbs.! Is this true??
 

willys1

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Dec 2, 2003
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Mar 8, 2004
#3
  • Mar 8, 2004
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,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,anyone??
 
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91gt5.0

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Garden City, Kansas
Mar 8, 2004
#4
  • Mar 8, 2004
  • #4
i put mine at 20 and didnt notice a difference, then i dropped them down to 15 and did a major burnout before i ran. really work, actually it bogged the car down because i only launched at 3500. put them at about 15 and like i said do a good healthy burnout.
 

willys1

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Dec 2, 2003
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#5
  • Mar 8, 2004
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Thanks for the reply!! Thats awsome,maybe I can get my 60's below 2 seconds Is it safe to run em that low at 90+ mph?
 
9

91gt5.0

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Mar 8, 2004
#6
  • Mar 8, 2004
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i never saw a problem. ran prolly 3 times with them like that and a friend borrowed them and ran another 3 times on them. oh yeah it will drop ur 60 ft quite a bit. i was running 2.2's at first then ithink i dropped them down to a 1.9. my friend ran 1.8's or 1.7's launching at like 5500
 
M

mustangrfast88

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Sep 22, 2002
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middletown ohio
Mar 8, 2004
#7
  • Mar 8, 2004
  • #7
go with 15 psi and do a big burn out and get them very hot and launch hard and you will really cut you 60 foots down and they are plunt safe at 90 plus mph
 
L

L8 MUSL

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Jan 20, 2003
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Mar 8, 2004
#8
  • Mar 8, 2004
  • #8
I would lower them down to 11 psi.
I'd do a good smokey burn out and they would hook pretty good.
By the time I got back into the staging lane it would still be up around 18 19psi.
One good burnout raises the temp/pressure real quick.
The first time I ran them at the track I met a guy who had allot of experiance with them. I wasn't so sure but he talked me into going that low and he was right.
Just treat them like a slick.
 

86Cobra

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Mar 9, 2004
#9
  • Mar 9, 2004
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L8 MUSL said:
Just treat them like a slick.
Click to expand...

Exactly. 11-12 psi and big burnouts.
 

willys1

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Dec 2, 2003
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Mar 9, 2004
#10
  • Mar 9, 2004
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Awsome,thanks guys Im gonna put them down to 12 ! But I have an Aod with a 2800 stall conv. and 373 gears.My best 60 rite now is 2.0,,hope this helps!
 

millhouse

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May 14, 2002
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Mar 9, 2004
#11
  • Mar 9, 2004
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I run mine at 18psi at the track and 22-24 psi on the street. Once you start getting into the mid-low teens (psi), stability will become an issue at higher speeds.
 

willys1

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Dec 2, 2003
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Mar 9, 2004
#12
  • Mar 9, 2004
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millhouse said:
I run mine at 18psi at the track and 22-24 psi on the street. Once you start getting into the mid-low teens (psi), stability will become an issue at higher speeds.
Click to expand...
Millhouse,Im looking at you mods,and pretty much all you have that I dont is the edelbrock intake!! Your runnin 13.5,s?? Dam
 
L

L8 MUSL

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Mar 9, 2004
#13
  • Mar 9, 2004
  • #13
millhouse said:
I run mine at 18psi at the track and 22-24 psi on the street. Once you start getting into the mid-low teens (psi), stability will become an issue at higher speeds.
Click to expand...

Check your pressure after a good burnout and pass.
That 18 will be more like 25.
 

90mustangGT

I felt sorry for girls because
Founding Member
Jan 15, 2002
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Dallas, GA
Mar 9, 2004
#14
  • Mar 9, 2004
  • #14
A little OT, but if you are trying to drop your 60ft's, try disconnecting one of the swaybar links. This will help transfer weight better. You can reconnect it easily as well. I removed mine completly.
 

willys1

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Dec 2, 2003
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Mar 9, 2004
#15
  • Mar 9, 2004
  • #15
L8 MUSL said:
Check your pressure after a good burnout and pass.
That 18 will be more like 25.
Click to expand...
So when I heated them up and had 32lbs,it was about 40?
 

millhouse

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May 14, 2002
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Mar 9, 2004
#16
  • Mar 9, 2004
  • #16
willys1 said:
Millhouse,Im looking at you mods,and pretty much all you have that I dont is the edelbrock intake!! Your runnin 13.5,s?? Dam
Click to expand...


Yep, unfortunatley I wasnt able to run last year in the cool fall air, or I may have a 13.3 or 13.4 in my sig . The way it stands right now, my intake was only worth .3 tenth's at best. I thought it would have been more, but I do believe my stock tb and maf are restricting the true potential of the performer (not including the stock heads of course).


As for my tire pressure raising after doing a burnout...I know this. I get the most even tread wear at right around 24lbs on the street, so 18 was the magic number for me. Any less than that and I believe my tires were starting to cup, thus loosing traction. BTW, 11lbs of pressure in nitto's sounds way, way to low. I've heard of people doing it sucessfully with bfg's, but I'd be weary to try them with nittos.
 

willys1

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Dec 2, 2003
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Mar 9, 2004
#17
  • Mar 9, 2004
  • #17
millhouse said:
Yep, unfortunatley I wasnt able to run last year in the cool fall air, or I may have a 13.3 or 13.4 in my sig . The way it stands right now, my intake was only worth .3 tenth's at best. I thought it would have been more, but I do believe my stock tb and maf are restricting the true potential of the performer (not including the stock heads of course).


As for my tire pressure raising after doing a burnout...I know this. I get the most even tread wear at right around 24lbs on the street, so 18 was the magic number for me. Any less than that and I believe my tires were starting to cup, thus loosing traction. BTW, 11lbs of pressure in nitto's sounds way, way to low. I've heard of people doing it sucessfully with bfg's, but I'd be weary to try them with nittos.
Click to expand...
I agree,,11lbs is scary low!! Man!! 13.3,,Im impressed,,you must be launching at 5 grand!! I have an aod,,I rev it up just a little,when the lights are 2 away from green,I nail it and depend on the flash of my converter.Im going again this Sunday.I gonna lower my pressure to 15lbs!! Im wondering if the dynomax bullets will do anything for me? I have them in my kitchen!! Rite now I have 3 chambered flowmasters.
 

millhouse

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May 14, 2002
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Mar 9, 2004
#18
  • Mar 9, 2004
  • #18
willys1 said:
I agree,,11lbs is scary low!! Man!! 13.3,,Im impressed,,you must be launching at 5 grand!! I have an aod,,I rev it up just a little,when the lights are 2 away from green,I nail it and depend on the flash of my converter.Im going again this Sunday.I gonna lower my pressure to 15lbs!! Im wondering if the dynomax bullets will do anything for me? I have them in my kitchen!! Rite now I have 3 chambered flowmasters.
Click to expand...


I hoped for a 13.3, but I didnt get a chance to run last fall.

I launch right around 4k, and slip the snot out of the clutch. I've done it that way about 150 times now, and my clutch has the same feel as when I bought the car used .
 
L

L8 MUSL

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Jan 20, 2003
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Mar 9, 2004
#19
  • Mar 9, 2004
  • #19
willys1 said:
So when I heated them up and had 32lbs,it was about 40?
Click to expand...

yeah, probably.
one BURNout raises the temp/psi quite a bit.
 
L

L8 MUSL

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Jan 20, 2003
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Mar 9, 2004
#20
  • Mar 9, 2004
  • #20
millhouse said:
As for my tire pressure raising after doing a burnout...I know this. I get the most even tread wear at right around 24lbs on the street, so 18 was the magic number for me. Any less than that and I believe my tires were starting to cup, thus loosing traction. BTW, 11lbs of pressure in nitto's sounds way, way to low. I've heard of people doing it sucessfully with bfg's, but I'd be weary to try them with nittos.
Click to expand...

We're talking about drag racing right?
We're not worrying about tire wear at the strip are we?
A tire that is "cuping" driving around town isn't going to be cuping when you drop the hammer @ 4000rpm.
I'm not trying to start a flame war.
I'm just saying experiment with the tire pressure, I did and for me, I hooked better at 11psi then say 15/16psi. And, I lived to tell about it, LOL.
No, honestly the guy who was coaching me was running way faster trap speeds then my 110 111mph.
 
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