Quote:
Originally Posted by PaleMelanesian
When you say "lug", what rpm are you talking about?
I routinely accelerate from about 1200 rpm (30 mph in 5th gear). I have a 107 hp 4-cylinder, from Honda no less - famous for having little torque down low.
You could probably adjust your driving and easily use 5th even lower than what you are now.
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40 MPH in 5th is now just under 1100 RPM and is just above the idle position on the throttle position sensor. Trying to accelerate even at 1/3 throttle from that state brings loud, low-frequency rumbling and vibration -- it's definitely lugging.
Doing the math (1200*40/30), you're doing 1600 RPM at 40 MPH, which means my 535i has about 30% taller final gearing (drivetrain & tire radius combined) than your Honda.
I can't really adjust driving to go any lower in 5th than that.