My DIY 2020 Model Y LR AWD Spare Tire kit:
1) Spare tire from a 3rd Gen Nissan Murano. 18x4 steel wheel, 5x114.3mm (or 5x4.5”), and 66.1mm bore. The Stock Nissan spare tire size is T165/90R18 and has a diameter of 29.69”. My stock 255/40R20 has a diameter of 28.03”. I may have a tire shop...