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tune vs taller tire

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Old 10-12-2007, 07:53 PM
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Default tune vs taller tire

I was wondering if the car was tuned for stock size tires and I bumped up to 28" tall tires for the track, how will this affect the tune? I will only be running the 28" tall tires when I spray the car. The car sits at 11.3:1 AFR when I am on the nitrous.

The car is cam only with a 100 shot on top of it. the gears are 4.30s so I need a little help on the top end to not shift into 5th gear. I am only spraying to 6500 RPMs.

Thanks for all your help
Old 10-12-2007, 08:25 PM
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I think it would be fine since it's an M6. Obviously the speedo is off but other than that I can't see where it will change anything. If it were an A4 there would be some issues.
Old 10-12-2007, 11:44 PM
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only thing I was worried about is it being a different load on the motor for the RPM since the effective gear ratio would be less(numerically lower).




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