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say max engine torque is 310 nm at 4500 rpm, while engine torque at 7000 max rpm is 250 nm.
gear ratios on a 6-speed are as below, followed by wheel torque calcs at max engine torque and max rpm ...
1 3.82 1185 955
2 2.20 680 550
3 1.52 470 380
4 1.22 380 305
5 1.02 315 255
6 0.84 260 210
from this you can see that it is better to stay in first to redline (955 vs 680) and second to redline (550 vs 470) and third to redline (380 to 380, but note the time and power loss during a shift). arguably fourth to fifth and fifth to sixth could be short shifted a bit, but that is a fast track if you are running in those gears. also note that final drive, as well as wheel and tire radius, have not been included in the calcs.
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