Quote:
Originally Posted by Frank Lee
Back in the day I read a comment from an Audi engineer saying the AWD doesn't hurt fe because a powered wheel has less rolling resistance than an unpowered wheel and that pretty much cancelled out the extra weight and mechanical transmission losses. They made it sound like an fe wash.
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How does that work? I could buy a negligible difference, since a decent axle is at what, ~97-99% efficiency, and an extra ~50lbs won't do much, but I've never heard of a powered wheel having less RR.