At what RPM should the engine be running at when driving at 120Km/h. Car is: 2005 Infiniti G35x sedan. Tks.
most cars normaly run at about 2200rpm at 100 km per hour but this will change with tyre sizes the taller the tyre the less rpm the lower height tyre will lift rpm at 100km at a guess stained 15inch rims and tyres at 120km per hour should be about 2400 to 2500 rpm
note this did not take into account things like over drive
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