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Doug
Doug, ASE Certified Technician
Category: Mitsubishi
Satisfied Customers: 8622
Experience:  Mitsubishi employed and Factory trained ASE certified technician
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2009 lancer over 110 km/h (68mph) reads over 3000 rpm in 5th

Customer Question

2009 lancer over 110 km/h (68mph) reads over 3000 rpm in 5th gear. RPM seems too high.
Submitted: 2 years ago.
Category: Mitsubishi
Expert:  Doug replied 2 years ago.

Hi, This sounds like perfectly normal operation. With a final drive ratio of 4.235:1 and your fifth gear over drive of 0.775:1, calculating with stock tire size (215-45R18) diameter of 25.6 inches you should be turning just over 3000 RPM by 70mph. Take into account tire inflation (and so tire diameter) as well as gauge accuracy and you could see a 3-5% variance easily.

Expert:  Doug replied 2 years ago.

It looks like we missed each other. If you need more help on this just let me know and we can continue.