20 inch BBS CI-R on GLC 43
I used Tire Rack to put all of this together and decided that I would rather go with the GLC 63 spec due to the limited tire choices of a 255/40 R20 that is recommended on a 20x8.5 GLC 43 spec. The GLC 63 spec goes up to a 20x9 and a 265/45, which there are many all-season, summer, and winter tire choices.
Front: 20x9 et 25 with 265/45 Pirelli Scorpion Zero All-Season Plus
Rear: 20x10 et 25 with 295/40 Pirelli Scorpion Zero All-Season Plus
Photos are sitting at the normal comfort height. Each front wheel and tire is 1lb lighter, with each rear being 2lb lighter that the stock 20's with summer tires.


