Almost E63

First post here, been lurking for a while.

I recently got C63s wheels for my 2013 RWD E550 Cab. I need wheel spacers for the back no question. The C63s wheels make the rear tire width go from 255 > 285.
My question is do I just get 30mm wheel spacers, or what is the logic necessary to determine correct spacer size?

For the fronts the width goes from 245 > 255, but the sidewall profile goes from 40 > 35. Same question as before when it comes to spacer sizing.

Siegmann

Which sizes are the C63s wheels? There are a few different choices. You may not even need spacers.

Need to know wheel widths and offsets.

Almost E63

They’re from a 2018 C63s coupe from my understanding, but I got them from someone running them on a C450, so info might be wrong as it came down the line.

So the fronts seem fine. They’re 9”, and the offset I found was 25, but that seems wrong. Only issue is when the wheels are turned fully left or right there is very slight rubbing on the wheel well liner.

Rears are the issue, 10.5” and offset of 57. When on the hub the back of the wheel is smack against the wheel well liner.

Overall I think I could do 10-20mm on the rears and that’d be perfect. Then maybe do 2.5mm on the fronts, idk really how to avoid that rubbing other than by getting a lower profile sidewall tire, so the spacer might be pointless.

PS, is there any good website(s) for just raw info in regards to various values for all MB’s?

Stevie101

Find the exact wheel you have on this site. Post the wheels sizes and ET's, that will assist with suggestions from the forum members.

https://www.alloywheelsdirect.net/mercedes_alloy_wheels

Almost E63

thanks! I was using another website, but I feel this will be more reliable

crazy00c230k

I wouldn't doubt the fronts are 25mm offset, its pretty aggressive for the 207, especially with a 255 tire on it, if the rub is too bad I'd suggest going down to a 245. I was running 19x8.5 et37 and had thought of throwing on a 10mm spacer because it looked like I had the room. Are the rear wheels 19 x 10.5 or 20 x 10.5? I used to run 19x10.5 et50 with 285/30 tires on my car before it was lowered, went down to a 275 (30 aspect ratio at first, 35 later) when lowered to avoid rubbing. I feel like 19x10.5 et50 was getting to the limit of what you could run without having to modify anything as it was pretty flush with the fender and there was right around 0.5 inch between the wheel/tire and strut, so not a ton of room to play with. Running a 5mm spacer in the rear would get you to an effective offset of 52, 2mm more toward the strut than my old setup, there was easily 2mm of space on the inside of the wheel so that should be fine. Similarly a 10mm spacer would put you at an effective offset of 47, so 3mm toward the fender from what I was running, it might poke a little and cause even more rubbing if you're planning to lower, but it could work. If they're 20s, I'm not sure, try searching through a few threads here to see what people are running with 20s, or perhaps someone with 20" experience can chime in here.

Almost E63

Super useful information. I was gonna just drop the front tire size, or aspect ratio of the fronts next summer as these tires came already on the wheels and are brand new, so would be a waste to get rid of them. I had the fronts mounted and on the ground and I really had to try to cause them to rub the wheel well liner. Was really testing the limits.

Rears are 19x10.5. When I had it on the hub it was well enough away from the fender that I feel I had room for a decent size spacer. It really only needs a 5-10mm spacer to have a few mm gap between the back of the wheel and the wheel well liner. That rubbing at the back is the main issue that is making me not already have them mounted on my car. If I need to roll the fenders, or make the rear a widebody, then I will when that time comes. The fronts were further out than the fender, so I already know going wider is a necessity if I want flush fitment.

Thanks again! that was really some of the best information I could've asked for with your setup being very similar.

Siegmann

@Almost E63 Did you end up putting these on?

crazy00c230k

I used to run a 19 x 10.5 inch wheel on my 207, et50 was pretty flush with the fender, using a 10 or 20mm spacer would push the wheel out 3 - 13mm (0.1 - 0.5 in) more than the fitment I had. 10mm you might get away with, I wouldn'tgo any bigger, 20mm will be way too much IMO. I was running a 275/35 tire with no rub.

jonathonp

I have C63s wheels for my 2012 RWD E550 Coupe. Rears fit fine with no spacers.

Front: 19x8.5 ET43 245/35
Rear: 19x9.5 ET53 275/30

604550C207

I am looking at some C63 wheels that are 18 x 9.5 ET 56 for the rears, do you think they will fit without spacers?

I do plan on using a 15mm spacer for the rear to make it flush, but I need wheels/tires asap, and a spacer will take some time to source.

604550C207

The wheels fit with no spacers despite the higher ET.

Will most likely add spacers to the rears to flush them out.