Anybody know if 2015 18" wheels will fit on 2020 G550?

 

The bolt pattern (5 x 130) and center bore (84.1 mm) should be the same.

 

wondering if they will clear the brake callipers?

 

The clearance in the axial direction should be OK. If you now have at least 1.5" radial clearance between the inside wheel surface and the top caliper surface, it should fit (assuming you have 20" wheels). I'd contact the 18" wheel seller and ask for dimension specs.

 

thanks, i have the 18" wheels with winter tires. If i order a new 2021 G550 with 19" wheels, im wondering if it will clear the 18" factory wheels from the older model.

 

my 2021 G550 will fit 18" wheels from the 2015 G550.

Just need a 30mm spacer to make it look perfect.

 

You'll need spacers for sure.