vic viper

It can sometimes get confusing to calculate offsets, use this, it is very useful:
https://www.1010tires.com/Tools/Whee...et-Calculator#

9,5 ET40 will extend an extra 9mm.s from my setup (10" ET55)

atl 2 chi

Tried another set of rims today(Niche) and the front cleared control arm, but barely. The guys at the rim shop said it was way to close for the install. In fact, they said, and I saw, that the tire definitely would have touched the control arm. They called Vossen and Vossen said they are aware of the issue and said I could have some custom ones made at this point. I am sure that will cost an arm, leg, kidney and a lung.

lbowroom

Which Niche wheel, what size and offset?

atl 2 chi

The Niche Verona in a 19x8.5 ET34. Guess a 5mm or 10mm spacer would make them work, however, trying to stay away from them. Thoughts?

C450 guys, how are yall making your wheels work?

Saw the Vossen's on a white one. Custom?

Mike5215

These are the various OEM wheel offsets I was able to track down for the W205. Obviously the closer you are to these offsets the less likely you are to have clearance issues assuming wheel widths remain the same. If any of these are wrong let me know:

C300

7.5Jx17,18,19 ET44
8.5Jx17,18,19 ET56

C63

8.5 J x 18,19 ET38
9.5 J x 18,19 ET56

C450

Front 7.5 x 18,19 33ET
Rear 8.5 x 18,19 49ET

"Offset" is the difference between the rim's center line and the rim's rear mounting surface (where the rim meets the car's hub). For example, on an 8" wide rim, the center line would be 4". If the hub mounting surface was at 4", the wheel would have a zero offset.

Reducing the offset on your wheels vs OEM causes the wheel to poke out more in the wheel well. Increasing offset moves the wheel inward toward the struts. Adding spacers reduces the offset by the width of the spacers. If you have a wheel with a 45mm offset and add a 10mm spacer the effective offset becomes 35mm.

Especially on front wheels, I try to avoid spacers and keep the offsets as close to factory as possible. On rears it seems less essential.

atl 2 chi

I was hoping the Niche's with the ET34 would work. Looks like that 8.5 width of that rim is the issue now. I assume I need to find a 7.5. Such an odd in my opinion. Two sets of rims test fitted thus far and a NO GO!

IstvanC

Okey guys, so today i just tried to fit the rims by them selves on the car. This is with the suspension hanging in the air.

I think I could make it with 265 tiers when the car is dropped.
Right now as you can see on the picture it's just behind the outer side of the lip.
(It's hard to see, but the upper side of the rim isn't touching the big ruler when I lay it on to the bottom side of the rim and outside of the fender)

Maybe with tiers on and dropped the top part of the wheel will move in just a tiny bit as the camber gets more negative..

Or at least that's what I hope. I found a member riding et47 with 10" wide rim and 285 tiers. It looks sick. And he told me there was no rubbing.

My setup is almost 1 mm further out then his, but with not as wide tiers, so hopefully. I might have a chance... And if I'm lucky, I might have found KW coilovers for my car. But nothing confirmed yet..

lbowroom

According to Tirerack, an 8" width with a 35 offset will fit. Should be roughly 6mm/ 1/4" more room on the inside than the 8.5 34 you tried.

OSMS_Carlsson

This is unfortunately a perfect example of ordering wheels at a discount price over the internet and not from an authorized Dealer. You are now spending good money after bad to experiment, and you obviously were working with people that were more interested in taking your money vs providing you the right product and service.

Keep in mind folks when you are also looking at the offsets being fit to the C63 Application, the C63 has a wider front fender than the 450, and the rest of the standard C class vehicles, so if you see an application that is using a low offset on a C63, it is because the car has a wider fender to allow the more aggressive offset. The control arm issue on a C450 requires the vehicle to be fit with a 8.0" wide wheel that should have an offset of +35, and the 8.0 inch width will allow the 225 tires to sit proper and square on the rim. Unfortunately there are not a lot of Cast wheel manufacturers making 8.0" inch rims because most wheel companies are trying to fit wheels that fit the larger chassis vehicles.

For all of you concerned about spacers...this is valid in the case of Universal Non hub centric spacers, but majority of the Tuners use spacers, or referred to as adapters that are specific to their Tuner wheel only, these are hub-centric with properly matched lug bolts that allow the tuners to use their wheels on anything typically from a C class, to an SL, or an S class etc. that use 245, 255, and up to 265 tires, and those tires will pinch too much on a 8.0" rim.

Hope this information helps! Sorry Greg for all your trouble. Hope you are able to get it worked out.

Jim

Mike5215

My experience with spacers have always been hubcentric, on an S Class. If you're suddenly getting vibrations in the steering wheel, the only thing you've changed is adding spacers, and the vibrations are gone when the spacers are removed, it's a spacer problem. They seem to be less an issue on rear wheels.

atl 2 chi

Thanks Jim. Should have listened. I asked all the right questions however I did not get all the right answers. Luckily I saved all the correspondence so I am able to get my money back. I was assured numerous time that they would fit. Lesson learned! Thanks again.