4.08 or 3.90 gear questions...

OKC Z · 02-13-2012, 05:10 AM

Quote:

Originally Posted by tranceformer

That drag radial is slightly taller than a stock sport package tire.

Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
275/35-19 3.8in 13.3in 26.6in 83.5in 759 0.0%
285/40-18 4.5in 13.5in 27.0in 84.7in 748 1.5%

Thank you, I gave u some rep for that tranceformer. So ive increased my gearing by 1.5% or the tire? That is very minimal. To where the driver cant tell the difference. So if I install some 4.08 gears I should still benefit from ~10% acceleration increase correct? I was told it wouldnt make much of a difference once the tires were in place.

tranceformer · 02-13-2012, 04:42 PM

Quote:

Originally Posted by OKC Z

Thank you, I gave u some rep for that tranceformer. So ive increased my gearing by 1.5% or the tire? That is very minimal. To where the driver cant tell the difference. So if I install some 4.08 gears I should still benefit from ~10% acceleration increase correct? I was told it wouldnt make much of a difference once the tires were in place.

Your actual speed will be 1.5% faster than what the speedometer reads.

4.08 gears = ~10% more aggressive than 3.7 gears, but not necessarily 10% faster acceleration.

Stop speculating and just get the gears installed.

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