Merc rear stick-on bits?!
Merc rear stick-on bits?!
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Discussion

Jackso

Original Poster:

36 posts

205 months

Wednesday 26th May 2010
quotequote all
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???




monthefish

20,467 posts

261 months

Wednesday 26th May 2010
quotequote all
Jackso said:
... I'd guess these are to make sure there's some wheel overhang legislation compliance???
Almost certainly.

(You'll see the same on the old Jaguar XK when 20" wheels are factory fitted).

Jonboy_t

5,038 posts

213 months

Wednesday 26th May 2010
quotequote all
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?

monthefish

20,467 posts

261 months

Wednesday 26th May 2010
quotequote all
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

Original Poster:

36 posts

205 months

Wednesday 26th May 2010
quotequote all
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!

mat205125

17,790 posts

243 months

Wednesday 26th May 2010
quotequote all
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.

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 wink

Jackso

Original Poster:

36 posts

205 months

Wednesday 26th May 2010
quotequote all
It's a good point with the other german marques and my first thought when a spotted them, surely there's other ways, i know the UK isnt their biggest market but still...

Would removing them give you an MOT fail also? cant think it would be.

V6Alfisti

3,314 posts

257 months

Wednesday 26th May 2010
quotequote all
Could it not be stone protection (ie a modern mudflap) due to the wider alloys?

Stone protection for own paint work and those behind?

anonymous-user

84 months

Wednesday 26th May 2010
quotequote all
I don't think it is tyre poke.

Look lower down and the bodywork curls in under the car exposing tyre!

Might be a wind deflector or stone guard.

Looks cack!

Lewis

mat205125

17,790 posts

243 months

Wednesday 26th May 2010
quotequote all
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.

monthefish

20,467 posts

261 months

Wednesday 26th May 2010
quotequote all
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?
silly


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;

mat205125

17,790 posts

243 months

Wednesday 26th May 2010
quotequote all
It's still a neater and more subtle solution to the bodged lash-up of a solution that Porsche came up with a few years back.




Jackso

Original Poster:

36 posts

205 months

Wednesday 26th May 2010
quotequote all
Surely they could have bettered that ^

(not quite figured out how to quote yet... getmecoat )

MrLou

879 posts

251 months

Wednesday 26th May 2010
quotequote all
Jackso said:
Surely they could have bettered that ^

(not quite figured out how to quote yet... getmecoat )
Click on 'Quote'.
Type.
Click 'Preview' if confused.
Click 'Submit' when ready.

Jackso

Original Poster:

36 posts

205 months

Wednesday 26th May 2010
quotequote all
MrLou said:
Click on 'Quote'.
Type.
Click 'Preview' if confused.
Click 'Submit' when ready.
Cheers mi dears, really shoud have been able to figure that on out myself!

mat205125

17,790 posts

243 months

Wednesday 26th May 2010
quotequote all
Jackso said:
Surely they could have bettered that ^
Only by making it cheap enough for me to afford one cloud9

Jackso

Original Poster:

36 posts

205 months

Wednesday 26th May 2010
quotequote all
mat205125 said:
It's still a neater and more subtle solution to the bodged lash-up of a solution that Porsche came up with a few years back.

Reminds me of these with the arches...




kilty2

226 posts

201 months

Wednesday 26th May 2010
quotequote all
Nothing to do with tyre compliance...

It is simply "styling" My US spec SLK has them - they are part of an "Aero" package.



The front splitter has stick on bits too...

Silent1

19,762 posts

265 months

Wednesday 26th May 2010
quotequote all
The first new shape Cooper S had them on too, something to do with aero, but they ditched them on the facelift.

LeighW

5,379 posts

218 months

Wednesday 26th May 2010
quotequote all
If you option AMG wheels from the factory, you get the wheel arch extensions too. My CLK came with them, also rolled arches to clear the tyres.