I couldn't find much information out there on fitting these to the GLC so here is the rundown in case someone else is looking. My 2020 came with the 21-inch AMG split 10-spoke with summer tires (front: 21x8.5 et 40 with 255/40, rear 21x9.5 et 22 with 285/35) and though they are nice, I want a little more sidewall and all seasons in this daily driver.

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.