HerdingElectrons wrote: ↑
Sun Mar 21, 2021 11:12 am
The 17" OEM combo if TireRack's weight for the OEM Michelin specs are to be believed means that I went from a 47.2lb per corner to a 38.92lb per corner so a reduction of 8.28lb which is very noticeable during initial acceleration. basically I now get the "eagerness" of the car when Eco mode is turned off with the lighter combo while still in Eco mode.
That's what I would have predicted. That 8lbs of rotating mass is very significant on acceleration. On the other end, you'll have less regenerative braking energy to recover. Given the inherent inefficiency of regen, better to save those electrons on acceleration. It's the same when you swap over to say larger disc rotors and brakes for a "performance" upgrade. Yes, you stop better, but almost always at the cost of acceleration.
Try those in gear acceleration times! Thanks again for posting. Very interesting stuff for a techno geek like myself.