Some guys are running 265/35/19's on 19x9.5" wheels, I think they would work on 19x9's too at least a 255/35 should work, but I'm not sure I'd want the smaller sidewall either. Maybe the foam isn't a big deal but the tires themselves seem to be different than the non tesla versions. I have heard the tesla versions are made to run higher air pressure and have wider tread.
Not sure about air pressure, I've been running the recommended 42 psi in all my tires for about 5 months without any issues (245/35/20 Continental DWS06 all-season).
I'm cautiously optimistic about the range increase, that being said he went from a sticky PS4S tire to an all season tire, rolling resistance is definitely going to be reduced. Also I don't know exactly which tire he got but the tread width on a 235x45 is likely narrower than the fat width of the stock ps4s, which would also contribute to rolling resistance. I'm hoping for some range increase in going to 18 but I'm doubtful that I'll get 10-15% if I stick with ps4s and have a similar tread width. Once I get mine I'll post any range findings.
You are probably right, it's too early to tell with only one sample. Either way, I saw a similar outcome on my S going from 21's to 19's with all seasons, more like 10%, but I'm still using the heavy stock wheels which are 10 lbs heavier than the 19's in mono block forged....
How do you like these tires, I want to order some in 255/40/19 and yes I know they are 27" vs. 26.4" for stock, mounted on the stock 8.5" wheel width the tires come in at 10" width and are a bit better load rated, the only reason that I had settled on that tire is because all the others were anywhere from 2 to 4 lbs. more each in that size.
Very happy with the tires, great all around performance including in the snow.
Did you go with the A/S 3 so you would not incur a range hit like you might with the Michelin Pilot Sport 4 s?
So far so good, no issues, but I've driven only locally, the big test would be on the highway with higher speed. Will report back if I have any issues.
