Ok, I’m definitely going to do wheel spacers on my model 3. I took some measurements by driving one wheel at a time up onto a rhino ramp to push the wheel closer to the wheel well. As best I can tell, the front should accommodate around 10mm spacers and the rear around 25mm spacers without rubbing. It’s possible you could fit a little more but I don’t want any rub. Has anyone tried spacers yet? What sizes have you used?