Why do you care that the tires are lighter? It won't actually impact range significantly, however weight *can* be a proxy for hysteresis so it might have lower rolling resistance. Not necessarily though. And the car will accelerate at 1G either way.
Why? If you buy them both from the same dealer, such as Costco, why does it matter? Don't any cars come with A/S 4s, or other tires? Seems like it would just be another tire to them, unless Michelin ups the price because it's used by Tesla.
Well, lighter unsprung weight is usually desirable. I don't know if the difference in tires is enough to matter though. But it did seem to matter enough that performance cars used lighter magnesium wheels in the old days, and independent suspension. But perhaps with heavier EVs, the sprung weight is high enough to make it insignificant.
Less unsprung weigh is good, has always been good, but has perhaps always been a bit over stated in it's importance. If you had a 1,000lbs race car and shaved 10lbs of unsprung weight per wheel then you reap some large suspension efficiency benefits perhaps, but that we car enthusiasts stress about 5lbs per wheel on 4,000lbs daily drivers is a bit crazy.
No complaints with them here. I just did a 2,000mi+ road trip on them and had no issues with range. Noise sounds the same or similar to the OEM foam filled tires. The grip on them is insanely good in both the dry and wet.
Any regrets re: the Michelin PS AS 4 tires? I just replaced the stock MXM4s at 25k miles and 272 Wh/mi with the Michelin PS AS 4s. Tires have under 100 miles and range is 323 Wh/mi at the moment. I can return them within 30 days and install new MXM4s. Also running at 45 PSI in So. Cal. Have you found the performance, handling etc. to be worth the drop in efficiency? In week one, they drive and feel great. (2020 M3 dual motor)
I have 26218 miles @ 45 PSI. Efficiency is 259 wh/mi. Its absolutely worth it to me, I hated how the MXM4 feels compared to these especially when making turns.
Yes and to amplify your point if you're on the MXM4 running at 45 PSI to squeeze every last drop of range, just hope you don't have to make a panic stop. That tire is greasy to begin with and at 45 PSI maximum deceleration is very poor - whatever you saved on electrons won't cover your deductible. Obviously most Technologies are trade-offs but I believe that the PS4 all season has the best balance of virtues in the industry. It may not be an efficiency champ but it sure is good to great at almost everything else
Thank you. This is very encouraging. How is your tread at 26k miles? My MXM4s lasted 25k and were 2-3/32nds.
