Silver Dollar Raceway "Results"

[Hunter02SS]

Actually a taller tire will lower your mph. 150mph is a hell of a lot of power for a F body. Auto tranny is for drag racing, thats the ONLY reason to own one. Nice car. btw.

So if I go to a 28in tall tire and get rid of my 25in tall tire,I will not pick up mph??I have to disagree with you on this!! I am only 6 mph away from my goal. I think I can do it with the power I am at now!

[josh green]

So if I go to a 28in tall tire and get rid of my 25in tall tire,I will not pick up mph??I have to disagree with you on this!! I am only 6 mph away from my goal. I think I can do it with the power I am at now!

Every car I have ever seen swap to a taller tire has lost mph. By running a taller tire its just like changing your FD. A smaller tire is going to net you a higher mph b/c your rate of acceleration is greater than a taller one, given that you are not running out of gear due to the smaller tire. The only way that you can get a higher mph with a taller tire is with more power. If your not to the point where your current tire is your limitation, then there is no need for larger or wider. With the power and the car you have, a 28" 10.5" tire should do fine. I mean if the 10.5 guys can put down 2000hp or whatever they are and getting that **** in the 4's and 5's (1/8 mile), I see no need for more tire. At the track, a street tire is going to slow you down and your mph can be higher. Most of the time slips I have seen on slicks, a lower et was always at a lower mph, unless there was the ability to get more power down. If you hook sooner you accelerate sooner, not 1/2 way down the track where your mph will be up. Mph is measured at the end of the track in a box. You cross the 1st beam and then through the 2nd and your distance/time is calculated.

[Hunter02SS]

Every car I have ever seen swap to a taller tire has lost mph. By running a taller tire its just like changing your FD. A smaller tire is going to net you a higher mph b/c your rate of acceleration is greater than a taller one, given that you are not running out of gear due to the smaller tire. The only way that you can get a higher mph with a taller tire is with more power. If your not to the point where your current tire is your limitation, then there is no need for larger or wider. With the power and the car you have, a 28" 10.5" tire should do fine. I mean if the 10.5 guys can put down 2000hp or whatever they are and getting that **** in the 4's and 5's (1/8 mile), I see no need for more tire. At the track, a street tire is going to slow you down and your mph can be higher. Most of the time slips I have seen on slicks, a lower et was always at a lower mph, unless there was the ability to get more power down. If you hook sooner you accelerate sooner, not 1/2 way down the track where your mph will be up. Mph is measured at the end of the track in a box. You cross the 1st beam and then through the 2nd and your distance/time is calculated.

That's understandable! Actually with the 9in. rear i am going to have to get a 3.50 gear. Currently i have a 3.23 gear so with the higher gear and taller tire I should be about the same.