rage2

So I'm looking to fit 305's out back on the C63 BS. Problem is, I absolutely love the looks of the factory Matte Black wheels that I ordered with the car. Fortunately, the SLS comes with the same wheels, and is available in 20x11's. So here's what I'm thinking...

Factory rears : 19x9.5 ET 47, 285/30-19 (rolling diameter 25.8")
SLS rears : 20x11 ET 68. 305/25-20 (rolling diameter 26")

With that setup, rolling diameter would only increase by 0.8%, but the offset is way off but spacers can fix that.

20mm spacers, I would need 18mm clearance on outside and 20mm clearance on inside to clear.

25mm spacers, I would need 23mm clearance on outside and 15mm clearance on inside to clear. Probably need to roll the lip to make it work.

Does my math look right? Any thoughts?

gthal

I wonder if running a 25mm spacer would be an issue at the track (if you track it... which is a MUST if you own a BS)?

rage2

This would be strictly for a street tire setup. I don't like running any spacers at the track.

Mort

Have you priced the SLS MB wheels? Would it not be just as reasonable to get some monoblock HRE or something cut to fit? Probably be lighter as well.

rage2

I've already priced out ADV.1's, but I don't think they look as good as the factory Matte black wheels. The more I look at those factory wheels, the better they look.

The SLS wheels aren't cheap, that setup will cost similar to a full custom set of wheels + tires. And that's just for the rears.

HRE_Wheels

If you need any help, let me know. We have a couple customers waiting on their C63 Black. Going to be a very hot vehicle.

rage2

Thanks. I'm looking at the HRE P43 already, which is probably the closest I can get to the factory look.

nexlogic

Let me know if you plan on selling your stock Matte Black wheels. I'd be interested in buying them from you.

rage2

Sorry, not parting with stock wheels.

LangeOne

It would be good to hear what is available. I will need a set of wheels for my winter set up. I would like to approximate the appearance of the factory wheels and not deviate from their size.

Please PM me if you have some ideas.

Illusive

Math is correct. I agree that you'll probably have to roll the lip to make either set up work. I'd check your clearance on the inside tomorrow when you pick up your BS and then decide from there. The 20mm spacers will add almost the same amount of width on the inside and outside, but the 25mm spacers will help you out if you are going to come close to the suspension on the inside. The factory wheels do look amazing on the car and will definitely make everything come together with the stuff you already have planned!