Wagon wheel upgrade 19/20
I then put the standard rears on the front with 20mm spacers, so running the standard rear 265 tyres. It's worked perfectly. Some before pics:




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Put the standard wheels back on, while I figure out what to do.




Put the standard wheels back on, while I figure out what to do.
Just put 255's on the front, that'll sort out the rubbing.
285 PSS fitted ok, so sticking with them. Quite a bit of rim protection on the PS4.
Got some 9J coupe front wheels and had them machined to reduce poke, -7mm, so will see how they fit. Got 255 tyres to go on.
Machined by these guys:
http://www.tttoolsltd.co.uk/
https://instagram.com/tttoolsltd?igshid=e3cigml6tzwq
Last edited by SimMB; Nov 14, 2020 at 02:40 AM.
I tried 9.5" in the front, they were actually the old rear wheels which are ET56, so adding a spacer reduces offset down to ET36, but it rubbed on my strut. I could have spaced them out a bit more I suppose, but I didn't want more poke, hence why I machined some 9J wheels.
I also tried a 15mm spacer with the standard fronts, running a 245 on 8.5J, but I wanted to run 255 in the front and the coupe rears on standard 285 tyres have some stretch, so it would have the front bulging and the rear stretching, so wasn't good for my OCD!
I tried 9.5" in the front, they were actually the old rear wheels which are ET56, so adding a spacer reduces offset down to ET36, but it rubbed on my strut. I could have spaced them out a bit more I suppose, but I didn't want more poke, hence why I machined some 9J wheels.
I also tried a 15mm spacer with the standard fronts, running a 245 on 8.5J, but I wanted to run 255 in the front and the coupe rears on standard 285 tyres have some stretch, so it would have the front bulging and the rear stretching, so wasn't good for my OCD!
The coupe 9J is plus +12.5mm rim and +13mm offset hence the considerable poke!
Use the following calculator, it's got a good visual.
https://www.willtheyfit.com/
I've just put 20" OEM AMG wheels on the rear of my C63 (with 285/30 PS4 tires). Rear left has loads of clearance but rear right is rubbing on the inner arch casing (where there is a pipe running behind the arch). Any thoughts on why I might be getting different results to you? I think my car is identical model and the wheels visually look identical also!
Cheers in advance
I've just put 20" OEM AMG wheels on the rear of my C63 (with 285/30 PS4 tires). Rear left has loads of clearance but rear right is rubbing on the inner arch casing (where there is a pipe running behind the arch). Any thoughts on why I might be getting different results to you? I think my car is identical model and the wheels visually look identical also!
Cheers in advance

Thanks, I've checked this but the PS4s only stick out about 2mm max beyond the inside wheel rim?
The wheels are 10.5J (ET57) which I believe are identical to yours so I'm confused!
Last edited by brunosbeard; May 9, 2023 at 05:20 PM.



