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G Schenck · 10-08-2007, 04:07 PM

It's not as much as you think. We have a car with 17 in. and went to 21 in. with no noticable effect on ET or reaction time. Everything we know tells you we should but we didn't see it. Best 60 w/ 17 is .987 , best w/21 is 1.000 should be the opposite, but wasn't. In all fairness times were not the same day or the same track, but was at Nat event tracks.

I guess there is a math expert out there that could formalize an answer for the additional rollout. I would spectulate that the slower the car, the more if would lower the ET.

Greg

10-08-2007, 04:07 PM	#2
G Schenck Senior Member Join Date: Mar 2007 Location: Harahan, La. Posts: 521 Likes: 41 Liked 81 Times in 35 Posts	Re: 27" to 28" front tire swap It's not as much as you think. We have a car with 17 in. and went to 21 in. with no noticable effect on ET or reaction time. Everything we know tells you we should but we didn't see it. Best 60 w/ 17 is .987 , best w/21 is 1.000 should be the opposite, but wasn't. In all fairness times were not the same day or the same track, but was at Nat event tracks. I guess there is a math expert out there that could formalize an answer for the additional rollout. I would spectulate that the slower the car, the more if would lower the ET. Greg