We installed standard black steel wheels for use with winter tires on our model 3 and when my wife brought it to the Tesla service centre (because the heat/front defroster only worked intermittently during a freezing rain storm) the tech guy immediately stated that he didn't think we should be using steel wheels on the model 3. He didn't state that we are going to wreck the car and need to remove them asap, he just stated that it's not recommended. Trying to get more info from them has been difficult and reaching someone on the phone has been impossible. The car feels fine and has been excellent in the snow. The wheel size is 18x7.5 5x114.3 42/64.1 and the tires are Michelin x-ice Xi3 BSW 235/45R18/XL98H which is the size Tesla recommended. The stock wheels are 19x8.5 40mm. So I am wondering if anyone has any info they can share about the potential problems or disadvantages of using steel wheels. I tried searching for info on this forum and in the owners manual and couldn't find anything. Thanks.