crock

My 2015 550S has the AMG sport package with 20 inch wheels and the fancy AMG calipers. Will the 18 inch wheels from a standard 2014 550S fit and work properly with the correct tires?

Is there any reprogramming I should be aware of when making the swap?

jenz

I didn't think the sport package added AMG brakes - same brakes you see on a S63/65 AMG? If so, an 18" wheel won't clear the brakes.

crock

The sport package definitely adds fancy AMG logo painted calipers. Not sure what that really means in terms of wheel fitment.

wilfie

I tried to go from 19 to 18 on my 2014 4matic and the front would not fit over the calipers. The AMG sport option seems to have bigger calipers or rotors and mine has that option. From the configuration guides it seems the 18's are possible if no AMG sport option. If I do order another S class I will be not ordering that AMG sport option.

Wolfman

AMG's have very different brakes than the sport package ones (no multi-piece). Sport Package has a larger front caliper but I believe the rotor size in front is the same. They caliper will not say AMG on it though, just Mercedes Benz.
This is for the US through. Other countries may differ.