So I just bought a 2016.5 CX5 GT and coming from the performance automotive industry did a little math for anyone interested. This is for 2.5 awd GT as the gearing in both the diffs and transmission as well as tire height are different on other versions. I provided the MPH formula at the bottom so you can play with specs from any vehicle.
I wanted to see the max MPH per gear as well as the RPM drop between gears, shifting at the redline (6500), which is as follows:
1st =34mph
2nd RPM drops to 3700 and pulls to 60mph@6500
3rd RPM drops to 4668 and pulls to 83mph@6500
4th RPM drops to 4477 and pulls to121mph@6500
5th RPM drops to 4602 and pulls to 171mph@6500
6th RPM drops to 5499 and pulls to 202mph@6500
This of coarse if the vehicle was not speed limited...I'm not sure where it cuts off but I assume if it's like most other vehicles it's close to the speed rating of the tires, in this case 149 for the v rated 225/55R19s that are on the vehicle.
I haven't tested this as I don't even have 300 miles on it yet but it works on the race cars so the math is solid.
Formula for MPH at a given RPM:
MPH= RPMXTIRE gear x Trans x 336
MPH= 6500(redline) x 28.9(tire height) 4.624 (diff) x 3.552 (1st gear) x 336
MPH = 187850 5518.61
MPH = 34.03
I wanted to see the max MPH per gear as well as the RPM drop between gears, shifting at the redline (6500), which is as follows:
1st =34mph
2nd RPM drops to 3700 and pulls to 60mph@6500
3rd RPM drops to 4668 and pulls to 83mph@6500
4th RPM drops to 4477 and pulls to121mph@6500
5th RPM drops to 4602 and pulls to 171mph@6500
6th RPM drops to 5499 and pulls to 202mph@6500
This of coarse if the vehicle was not speed limited...I'm not sure where it cuts off but I assume if it's like most other vehicles it's close to the speed rating of the tires, in this case 149 for the v rated 225/55R19s that are on the vehicle.
I haven't tested this as I don't even have 300 miles on it yet but it works on the race cars so the math is solid.
Formula for MPH at a given RPM:
MPH= RPMXTIRE gear x Trans x 336
MPH= 6500(redline) x 28.9(tire height) 4.624 (diff) x 3.552 (1st gear) x 336
MPH = 187850 5518.61
MPH = 34.03