What tire pressure do you run for 1/4 mile runs?

[Jer]

Please list tire pressure, best 60' and 1/4 mile time as well as any weights or mods you care to list. I dropped to 30psi at all four corners and was getting wheel spin at the rear and my 60' times were 1.71 & 1.76 so I'm consistent but know I can do better.

 

[nallj92]

Re: What tire pressure do you run for 1/4 mile runs?

22rear 26 front 1.70 60's on 17 inch rims, 4000 lbs typhoon

 

[Turbo6]

Re: What tire pressure do you run for 1/4 mile runs?

I run green dot retreads and use 20 psi front and rear and best 60' is 1.41. On regular street tires my best was 1.58 i think. I would run 25 psi on all 4 on my firestones when I ran them. If your tires get dirt/grit on them in the lanes pull in front of the water ( not in it) and get up enough boost to do a dry hop to clean em off then pull straight in the groove. I have seen really good gains in 60' with a dry hop if the tires are getting really dirty. The groove is usually the dark tread patches that you see.

 

[crashing_sux]

Re: What tire pressure do you run for 1/4 mile runs?

Is a dry hop where you spin them very briefly or are you not even spinning them?

 

[Turbo6]

Re: What tire pressure do you run for 1/4 mile runs?

Is a dry hop where you spin them very briefly or are you not even spinning them?

Its spinning them to clean them off. If they dont spin it isnt doing anything.

 

[crashing_sux]

Re: What tire pressure do you run for 1/4 mile runs?

Does anyone warm their rears up? Seems like a lot of us can sit with the brakes held and spin the rears in place, I always wondered if it was worth the wear on the brake pads to just let them spin for a bit and heat up.

 

[DanenGraham]

Re: What tire pressure do you run for 1/4 mile runs?

Does anyone warm their rears up? Seems like a lot of us can sit with the brakes held and spin the rears in place, I always wondered if it was worth the wear on the brake pads to just let them spin for a bit and heat up.

I would not do this, even if you can. Was it 03-04 Nats when they tried to do a awd burnout and the TC didnt like it at all.

 

[Jer]

Re: What tire pressure do you run for 1/4 mile runs?

Yeah, I doubt I'll do any scrubbing on an AWD vehicle. I never have in the past and I won't start now as I can't afford to replace drivetrain components weekly.

 

[crashing_sux]

Re: What tire pressure do you run for 1/4 mile runs?

I would not do this, even if you can. Was it 03-04 Nats when they tried to do a awd burnout and the TC didnt like it at all.

Now that makes a lot of sense, I bet trans temps would shoot through the roof.

 

[myclone]

Re: What tire pressure do you run for 1/4 mile runs?

Does anyone warm their rears up? Seems like a lot of us can sit with the brakes held and spin the rears in place, I always wondered if it was worth the wear on the brake pads to just let them spin for a bit and heat up.

Watched a stock truck break the front drive shaft doing that.... :2cents:

 

[ed hess]

Re: What tire pressure do you run for 1/4 mile runs?

22 ft 16 rear. tires are scrwed to the rims.

as for dry hops... i bring it up to 10psi and let go of brake mashing throttle and then immediatley back on the brake after it starts to spin. the time beofre i get back on the brake is dependant on how far to either side the rear turns. if it would stay straight i wouldnt get on the brake till the top bulb came on. lol

ed

 

[Windedv6]

Re: What tire pressure do you run for 1/4 mile runs?

20# front - Nitto DRs 275/40/17
18# rear - Nitto DRs 315/35/17

weight 4,000lbs

1.52 sec 60'

5# Boost.

 

[Jer]

Re: What tire pressure do you run for 1/4 mile runs?

20# front - Nitto DRs 275/40/17
18# rear - Nitto DRs 315/35/17

weight 4,000lbs

1.52 sec 60'

5# Boost.

That's encouraging to see with the wide tires too as I've been considering going with wider wheels/tires to get better 60' times but some say I would hurt the performance. Do your fronts rub when you turn or did you grind down the suspension part that they tend to rub on?

 

[Jer]

Re: What tire pressure do you run for 1/4 mile runs?

Also, at what pressure will I need to be more concerned with rotating the tire on the wheel and needing to get them re-balanced??

 

[Windedv6]

Re: What tire pressure do you run for 1/4 mile runs?

I have been out of town and missed your post. Personally, I would only run the wider rear tires on the heavier ty's. The longer wheel base and lighter rear weight of the sy seems to do great with the 275-40-17 or 16" drag radials.

I am using Jeff Scotts front arm and they do not rub. And yes the stock arms rubs if not trimed back a little.

The pressures that I stated in the previous thread are for the track. I run 28# all around on the street...

John

 

[Jer]

Re: What tire pressure do you run for 1/4 mile runs?

Well... I already ordered my 285/35/18 fronts so I'm pretty well committed to this combo. Up next are the 335 rears and wheels so I need to know more details on making them work.