Spacers
off with the factory wheel inset.
Please do post pics!
off with the factory wheel inset.

off with the factory wheel inset.
3055665SW - 15MM
4055665SW -20MM
The SW at end of each number designates black anodize finish, I believe silver has just the base number (w/o SW)
You will also need to get (10) ea. of 60MM and 65MM Mercedes Ball Seat Lugbolts for the wider spacers to maintain the thread engagement into the hub (45MM + spacer thickness...)
H&R 1456002 - 14MM x 1.5 x 60MM Length
H&R 1456502 - 14MM x 1.5 x 65MM Length
Hope this helps, I ended up renting a spacer kit in order to confirm wheel bolt pattern, lug size, etc. It was a pretty cool way to go because it also allowed me to build up various thicknesses in order to determine my preferred stance. Looks stock, not sure why the factory did not do this other than standard axle vs. slightly wider GLC body perhaps?
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Could you take a pic from center rear and also from the rear parallel with the rim?
I'm planning to get a different wheel for summer and want to get an idea of how much more width can be added without sticking out to far.
Could you take a pic from center rear and also from the rear parallel with the rim?
I'm planning to get a different wheel for summer and want to get an idea of how much more width can be added without sticking out to far.



