I chose 19" AMG (235/55R 19) on my 350e when placing the order. I also really like the 20" Multispoke (235/45R 20), and I'm considering to change. Any issues with 20" inch wheels on the GLC that I should be aware of?
So far I think it's more of a hit and miss thing. I've seen in the other thread that some owners with the 20" wheels are okay, but then again they are really fresh vehicles without much mileage on them. You should be alright but again, swing and see what happens. Hopefully MB will release a "fix" for it soon