Ahh wheels. I'm not sure what I'll do there. There's not enough difference in appearance between 18's and 19's in my opinion. Depending on if the width is also upped (we don't know that yet, do we?) then stability and braking performance can be enhanced, but at the cost of acceleration (noticable? Probably not), comfort, and range... not to mention $$$. I'm sure people have gone over this exhaustively, but I haven't followed. Doing a Google image search I see a Model 3 in real life (r/c) having 235/40 R19's. I'm surprised they're that narrow for a 19. Going over to tiresize.com it looks like we *can* fit anywhere from a 225/70 R14 all the way up to a 325/25 R20 without affecting speedo/sensors at all (ie. identical outer diameter). Taking a 1.5% sensor hit (which may not be wise on a car so reliant on sensors!) we can eek out a 295/25 R21. Interesting is that the equiv size 18's are 305/35 R18... considerably wider than the 19's. I'm guessing they'd go with the 235/45 R18 instead, which is 0.4% out and probably acceptable (an even narrower 215/50R18 is also 0.4% out the other way. That would maximize range). Of course, I'm basing this all on the 235/40 R19's being "correct", which is flawed logic, I know. Has anyone confirmed yet what is real? I'd be curious about going to 14s Mushy ride (good and bad thing depending on the quality of roads you drive) and... well, the look would be interesting lol And range would be improved, slightly anyway (unless the 18's are 215's).