I've been doing lots of reading and it sounds like people are getting custom machined wheels from getyourwheels as they will machine a countersink specifically for Tesla Model 3 Performance so that many of their wheels can fit! Other people like Fast Wheels are also offering their wheels with the necessary machining in the next week or two (similar wheels as seen in this video:)
Now my main dilemma is what size wheels to get...18x10 or 19x9.5, both in a +35 offset. I'd run 275's on the former and 265s on the latter, likely in RE-71R for starters and maybe going to A7's or something similar eventually. Both of these sizes will be a pretty tight fit and i'd love to get confirmation from someone that they fit before pulling the trigger
Thanks for this link - that guy in the video is technically quite competent. I do have some concerns about the getyourwheels website however, particularly the inability to get any wheel weights, or to use weight as a selection criteria. Some lines of forged wheels appear to be very expensive (even for forged), you can't get a very high quality photographic image to inspect, and they are stocking brands I've never heard of. I'm in no rush, so I will wait until some of the smoke, and the hype, clears out. All of us early adapters risk some pretty expensive mistakes paving the path for the later adapters who get to benefit from our mishaps.
If you have a model 3 with the Brembos, I doubt that 18s will work (correction - only a few will fit - like the expensive ones in the video!). Almost no 18 inch wheel clears those huge calipers (I've tried all three brands that I have). I think the 19 inch size is still the best choice, as you can go up to 265/35, still drop some unsprung weight with a lightweight wheel, and probably not risk too many clearance issues when the suspension is compressed under load. The 275 might work, but might be pushing it, even though the TMC guy states that there is clearly room - time will tell.
See here for a revealing graphic aid. You can rejigger the various combinations of wheel and tire using this great template. One thing to watch out for is any significant change from the zero scrub radius of the stock setup (although going slightly negative from zero is probably benign). That might change the steering behavior under acceleration and braking too. Also keep in mind that you won't be able to confirm that a 275 tire can clear without mounting it first, and if you mount it, you own it (both the wheel and the tire!) this could be an expensive experiment without the benefit of someone else's trial.
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