引擎轉速和時速的關係

Lancia thema i.e.16v NA 4AT
ZF 4HP18Q

1st ratio 2.579
2nd ratio 1.407
3rd ratio 1.000
4th ratio 0.742
reverse 2.882
final ratio 4.201

(X rpm / last ratio / final ratio ) * 60 = A RPH
Y inch * 2.54 * 1.6(if 195/60/R14) * 3.14 / 100 = Z m
Z * A = 100km/hr * 1000

so,
Z = 14*2.54*1.6*3.14/100= 1.7865344 m
A = 100*1000/1.7865344 = 55974.293 RPH
X = 55974.293 / 60 * 4.201 * 0.742 = 2907.996 rpm