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Old 04-20-2007, 03:47 PM   #1
2nd_to_none
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drag racing tomorrow

Well im racing in the morning and have everything tuned and ready to go BUT i dont know how low to go with the tire pressure.... i have 215-45-17s and i want to bring the tire pressure down so i can launch better. i have them set at 40 psi now but i was thinking about bringing them way down to like 15-20 psi, just the front thou leave the rear hard.. what is your opinion?


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Old 04-20-2007, 04:31 PM   #2
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that would probably work.
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Old 04-20-2007, 04:42 PM   #3
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Try dropping it and do a run, couldnt hurt. Hope you get enough runs to play with launching/ tire pressure combos. let us know how it goes
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Old 04-20-2007, 04:45 PM   #4
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thats too low....
id say ur at 40 which is already pretty high...
bring it down to 25 and ur cool...
that should get u off the line alot better
and create less drag down the track
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Old 04-20-2007, 06:33 PM   #5
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20-25psi agreed ^^^^

Then try 16-18 and compare your 60 against 20-25 range.
You never want to start that low you want to work your way that low until you find the right pressure. Goodluck.
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Old 04-22-2007, 06:36 PM   #6
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well i started at 25 psi couldnt get that good of grip so i went to 20 psi and ran some 16.0 (which is bad) and still couldnt grip so well..... i thought about going to 15 cuz some other guys did and it worked well for them but i didnt... i need to drop that puppy a little bit cuz i just couldnt get any bite. i tried launching at 3k rpms 2k, and no reving and still would spin so back to square 1
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