PenguinGTI
Passed Driver's Ed
I would like to calculate my GTI's speed given the gear and rpm.
I found the gear ratio as below but seems like something is missing.
ok here is my Math:
1st Gear ratio: 3.36
at 6000rpm
Tire: 225/40/R18
Tire Diameter: 18" + (40/10/2.54)x2 = 21.15" or 0.5372m
One rotation: 2xr*pi = 3.1415926 * 0.5372 = 1.6877m
at 6000rpm 1st gear: (1.6877*6000)/3.36 * 60 = 180.825kmp or 113mph
It is not possible to reach 113mph at 1st gear. :mad0259:
Seems like something is missing. Can anyone help? Thanks
http://www.vw.com/en/models/gti/tri...or.html#/tab=e991431688097d37258cb3a6c7426d58
1st Gear 3.36
2nd Gear 2.09
3rd Gear 1.47
4th Gear 1.10
5th Gear 1.11
6th Gear 0.93
I found the gear ratio as below but seems like something is missing.
ok here is my Math:
1st Gear ratio: 3.36
at 6000rpm
Tire: 225/40/R18
Tire Diameter: 18" + (40/10/2.54)x2 = 21.15" or 0.5372m
One rotation: 2xr*pi = 3.1415926 * 0.5372 = 1.6877m
at 6000rpm 1st gear: (1.6877*6000)/3.36 * 60 = 180.825kmp or 113mph
It is not possible to reach 113mph at 1st gear. :mad0259:
Seems like something is missing. Can anyone help? Thanks
http://www.vw.com/en/models/gti/tri...or.html#/tab=e991431688097d37258cb3a6c7426d58
1st Gear 3.36
2nd Gear 2.09
3rd Gear 1.47
4th Gear 1.10
5th Gear 1.11
6th Gear 0.93