Phil99vette

iTrader: (11)

What tire pressure are you guys using on average? I understand track temps and prep will change things. We run 10-11psi but have been told by many people that its not enough tire pressure.

JRracing

iTrader: (35)

Phil thats sounds scary to me. My old 26x10.5x16 et streets worked best between 15-18psi. Any lowwer felt like I was going to wreck. I did'nt like it.

I plan to start the 28's out at 20 and work my way down if need be. But if they are dead hooking, I will leave it there.

SlickVert

iTrader: (5)

Phil,
QTP Pro 26x11.5x15 worked best for me around 11.5psi hot
MT Drag 28x10.5x15S work best for me around 14 to 15psi hot
Bob

Gimp98TNT

iTrader: (21)

When i had a 6 speed i would run around 11psi in my 28x10x15 goodyear eagle slicks. I cut a 1.40 60ft like this. I also ran tubes in my tires.

JeffT

iTrader: (22)

MT ET Drags 28x10.5x15 worked best for me at 14psi cold, 1.35-1.40 60's @ 3465#'s.

HumpinSS

iTrader: (1)

When i ran my et streets that low wow what a ride. My stiff sidewall slicks on the other hand get about 11-12 psi


Edit

Running that low a pressure on et streets may make them cup in the middle

Phil99vette

iTrader: (11)

I wonder if I run my tires alittle higher pressure should I soften up the rear alittle.

Bitemark46

26x10x5 10psi cold. 12-12.5 psi hot.

Depending on what size tire you run I'd try adjusting the air pressure first before softening up the rear. 28's will take a bigger hit from the drivetrain than a 26" obviously. You best bet is to get the launch video. What are you trying to improve, 60ft or mph? -Mark

SlickVert

iTrader: (5)

Phil,
What tire are you running?
Bob

HumpinSS

iTrader: (1)

He is running ET Streets if i remember correctly

CHRISPY

12psi hot worked best for me

Phil99vette

iTrader: (11)

I'd love to find a way to run 14-15psi and still get low 1.4 60's.

Bitemark46

You can try to adjust the pressure to 14-15psi with your current tire size (which is what?) but if you haze the tires either loosen up the front suspension for more transfer and/or stiff up the rear. If either of those don't work add weight in the rear of the car, preferably over the axle. I've seen racers at NMRA and FFW have custom cages where you can rest 25lb workout weights right over the axles. Only down size is added weight so mph may be affected. -Mark

mike c.

iTrader: (1)

m&h racemaster cheeter slicks 26x11.5x15 14psi cold will net me 1.4 60's on motor. www.intercotire.com

TOSTO RACING

iTrader: (37)

With a stick car the only way to go is the stiff sidewall. I run 12.5 cold and it consistantly is 1.32 to 1.34 60 foots 28x10.5x15 stiff

RaNsOm

iTrader: (2)

whats considered stiff sidewall? I have Hoosier 28x10.5x15 full drags and run them about 12-13psi hot. Gets me high 1.5's

JRracing

iTrader: (35)

A 28x10.5x15S ET drag is a stiff side wall compared to the non "S" version.
I think they say its for heavier cars.

I just mounted up a new set. Bought to try'm out for the first time. Not sure what to expect.

SiL3NtXWS6

iTrader: (17)

Anyone know a company that makes a 28X11.5X15S? I need stiff sidewall too

1BADAIR

iTrader: (1)

this is what my 27/10.50 et's look like at 11psi.

02SOMWS6

iTrader: (6)

I run between 8-10 in my ET drags. I have the stiff sidewalls. Video in sig is with 8psi