Merc rear stick-on bits?!
Discussion
Hi All,
I noticed a friends SLK had these, then the other day a C-Class was next to me in the traffic. It was on a white C class and they really stood out and looked like a bad afterthought.
What are these for?!? The seem to be just on UK cars? It's driving me mad. I'd guess these are to make sure there's some wheel overhang legislation compliance???


I noticed a friends SLK had these, then the other day a C-Class was next to me in the traffic. It was on a white C class and they really stood out and looked like a bad afterthought.
What are these for?!? The seem to be just on UK cars? It's driving me mad. I'd guess these are to make sure there's some wheel overhang legislation compliance???
Jonboy_t said:
They seems to both be on AMG's. Could it have something to do with funelling a bit more air to the bigger brakes perhaps?
..or AMG offer bigger wheels than the std Merc range, and weren't considered during Merc's design process, hence the need for an afterthought/add-on to the body?Edited by monthefish on Wednesday 26th May 12:46
Jackso said:
The two i saw weren't AMG's but may have had a larger wheel option.
The little add ons just looked a little tacky on such an expensive car. The ones on the C were esp bad being split into two add on bits. Needs must though!
Needs must indeed. The little add ons just looked a little tacky on such an expensive car. The ones on the C were esp bad being split into two add on bits. Needs must though!
Why bother with the expense of engineering the body to fit the drivetrain on the AMG models, like Audi or BMW would do with their RS and M models, if a bit of ice cream tub and some araldite will do

Skodasupercar said:
I don't think it is tyre poke.
Look lower down and the bodywork curls in under the car exposing tyre!
I'm no expert on vehicle homologation, however any tyre coverage regulation isn't going to require the tyre to be covered all the way to the ground. Probably just to hub-centre height.Look lower down and the bodywork curls in under the car exposing tyre!
Skodasupercar said:
I don't think it is tyre poke.
Look lower down and the bodywork curls in under the car exposing tyre!
But it's not simply a case of protrusion - it's protrusion at what point/height - if the tyre wasn't permitted to be exposed at any point, how would it make contact with the ground?Look lower down and the bodywork curls in under the car exposing tyre!

Council Directive 78/549/EEC of 12 June 1978 on the approximation of the laws of the Member States relating to the wheel guards of motor vehicles
2.1.2. The rear of the wheel guards must not terminate above a horizontal plane 150 mm above the axis of rotation of the wheels (as measured at the wheel centres) and furthermore the intersection of the edge of the wheel guard with this plane (point A, figure 1) must lie outside the median longitudinal plane of the tyre, or in the case of twin wheels the median longitudinal plane of the outermost tyre.
2.1.3. The contour and location of the wheel guards shall be such that they are as close to the tyre as possible ; and in particular within the part formed by the radial planes referred to in 2.1.1, they shall satisfy the following requirements: 2.1.3.1. the projection - situated in the vertical plane of the tyre axis - of the depth (p) of the outer edge of the wheel guards, measured in the vertical longitudinal plane passing through the centre of the tyre, must be at least 30 mm. This depth (p) may be reduced progressively to zero at the radial planes specified in 2.1.1;
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