RPM
RPM
rolling lengt per 1 turn of the wheel will be something is 1958mm
that means you have per km 510 turns
x2,87 Diff ratio
x0,84 Tranny ratio in the 5th gear.
now you have 1231 engine turns per km
x km/h you have the turns per hour
:60 you have rounds per minute
2450 by 120km/h