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Old 09-10-2010, 10:59 PM   #1 (permalink)
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Tyre Pressures Slicks

I have been running Mickey Thompson slicks 28x9x15. have been ruuning them on 8 psi. is that too low. Car dont move around in the top end at all. It just seems that in this pic slick might be too low. That might be why it iosnt 60ft real good.


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Old 09-11-2010, 12:29 AM   #2 (permalink)
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Re: Tyre Pressures Slicks

Is that an auto? I have never run anything lower than 10 psi but thats mostly because of my car moving around too much at speed. That picture really shows those sidewalls twisted up, I would think that will wear them out sooner.
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Old 09-11-2010, 07:26 AM   #3 (permalink)
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Re: Tyre Pressures Slicks

I'm also using 28x9x15 M/T (15 psi), but I'm running a 5 spd. Hoooked well when warm enough. I was able to get air under the front tires.
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Old 09-11-2010, 10:29 AM   #4 (permalink)
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Re: Tyre Pressures Slicks

I run my 28X10s at 13 PSI. Seems to work the best for me.
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Old 09-13-2010, 07:13 AM   #5 (permalink)
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Re: Tyre Pressures Slicks

Quote:
Originally Posted by clevelandstyle View Post
I run my 28X10s at 13 PSI. Seems to work the best for me.
31x13-15 on a 65 mustang with a ladder bar.
I run 6.5 pounds before the burnout.
They go up to about 7 after the burnout. Dead hook at that pressure with no problems and don't move around much going downtrack.
I can run more air pressure and hook up but not as consistently so I just keep the air at 6.5 where I know what the result will be. I do not run any "super tracks".
Bracket Racing/transbrake/4000 chip/powerglide/4.86
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Old 11-13-2010, 05:46 PM   #6 (permalink)
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Re: Tyre Pressures Slicks

i've always run 10-11 psi in my 28x9's
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Old 11-13-2010, 07:58 PM   #7 (permalink)
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Re: Tyre Pressures Slicks

14-18 on those little slicks is where I found them to be most consistent...also depends on track temp and ambient air temp. Lighter Fox body car with low(er) power...around 350 HP give or take (306") with a 3 speed C4 and 4.86. 6.80s to 7.50's...quicker times with methanol slower times with gas and hot track conditions...but when I drove it, 14-15-16 psi worked the best.

People call me crazy and give me odd looks when I tell 'em 16 psi-but you know what...it worked. Same guys give me the same looks when they ask why I run so much air in my Maverick's tires (9 psi)...when they're running theirs (same size) at 5 or 6. Then they wonder why they're wadding up and inconsistent...and wonder why they can't get 100 passes on 'em before the sidewalls are shot
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Old 11-14-2010, 08:28 PM   #8 (permalink)
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Re: Tyre Pressures Slicks

Yep, 14 psi for me too.
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