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tire pressure ? QTPs

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Old 04-21-2006, 06:54 PM
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Default tire pressure ? QTPs

I just purchased a set of bogarts w/27x11.5 QTPs
and was wondering if anyone can give me a good starting tire pressure?

I have cut 1.53s on BFG DRs on my stock 16" wheels at around 17psi
and did not know if that is going to be a good starting point for these.

also what is the lowest pressure you can run on these without a tube?

thanks for any info
Old 04-22-2006, 09:17 AM
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i usually got my best runs at 17-18psi.

mid 1.4's at a 6000rpm dump out of a 460rwhp M6
mid 1.4's off the footbrake same engine, but TH350

I never ran them much below that. I let my buddy borrow them and he was down around 12psi but it was just too low IMHO.
Old 04-23-2006, 07:57 PM
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I run mine at 22 PSI but I'm a SI low power A4 car so even at that pressure I can't spin them. I have cut a 1.57 60' time though. I'd try them higher at first and go down if they don't hook. The sway on the big end is nasty if you've got them down too low. I stopped at 22 PSI becuase they hooked there. No need for unnecessary sway out the end. I started out at 28 and worked my way down from there. I can't imagine you could hook at that high a starting pressure though.
Old 04-23-2006, 09:21 PM
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well,
I ran them at 14/15 psi and they seemed to hook well???
only turned a 1.58 for a best 60.
I had a friend take some pics and the tires wrinkled well,left tire lifted around 4"
so my guess is the tire is spinning on the wheel,and I am not going to drill my bogarts

well here is a pic it is the 1.59
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Old 04-23-2006, 09:34 PM
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Did you try them at a higher pressure to see if they'd still hook? Just curious. Typically, the higher the pressure the more MPH you can run because of the decreased rolling resistance. I guess I'm just getting away with running much more pressure in mine than is typical. BTW, I only wish I could lift a tire like that. I need to get some weight off the front end of my car.




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