BFG K03s on 2025 G63?



Best way to be sure is to ask your tire dealer to test mount the size you want and check the clearance when turning the wheels while on the lift. You don't want to buy 4 tires and discover there's a problem while driving home.
At least for 2019-2024, the OEM 22's are 31.3" in diameter. 285/45/22's are the A/T size most of us used in the past and are 32.1" that just fit without rubbing.
I do not know about 2025's as I stayed stock, but I have to imagine they are similar.







