So I've had my 2012 C200 for a month now and this is the only thing that bothers me. I've read a lot about this issue and find it hard to believe that you can't make this car track true. Our company fwd focus will go dead straight if I let go of the wheel (pretty darn good car to drive those Focuses btw).

I've had the wheels aligned and it helped a bit but didn't completely cure the problem. The dealer told that it is common among rwd cars and my experiences from F10 5-series does somewhat agree with the statement.

Any insights from experienced MB owners/RWD drivers?

 

And it seems the car is more prone to pull to right than left. Even if the road is tilted to left the pull to left is very subtle. If the road is tilted to right the pull is more noticeable.

 

(K-MAC manufactures front Camber and Caster and Toe precisely adjustable kits to suit virtually every model Mercedes 1968 to 2014 Sedans, SUV and Commercials)



Since the mid 90 model’s, there has been no Camber and Caster adjustment facility fitted OEM!


Only current adjustment is front and rear Toe.

To attempt to return vehicle to factory specs to resolve premature inner edge tire wear, improve traction, fix steering pull the only current alternative for Camber and Caster is to fit offset, slotted bolts. But these are inaccurate one only position bolts offering a minimal .3 of one degree adjustment (3mm).

It’s no wonder many owners continually change tire brands or go from one MB Dealer or alignment shop to another trying to get it right/fix the problem.
We saw the need therefore "to fix it right the first time" by designing, developing, patenting (and re-instating from the 1990's) fully adjustable front suspension for virtually all models.

The current K-MAC kits have up to 4 times the adjustment of the one position offset bolts (both Positive or Negative). And unlike these offset bolts they can be accurately adjusted - under load, direct on alignment turntable (no need to remove and reinstall each time).


Ongoing precise adjustment of both Camber and Caster settings if altering suspension height, fitting wide profile tires/wheels, curb knock damage or being able to quickly fine tune/change specs on race days. Extra negative (plus track width) to go deeper into the corners /lower lap times. With the unique K-MAC patented design it is just a single wrench/no disassembly.

For the rear, similar kits for precise Camber adjustment with additional Toe to compensate for the new Camber facility. Unlike the alternative adjustable Camber arms K-MAC rear kits do not move top of tire outwards - this reducing all important clearance to outer fender when adjusting to fix premature inner edge tire wear/improve rear traction.
Also at K-MAC we have developed long life, maintenance free elastomer bushings with just the right amount of flex to get power to the ground, maximum traction. Unlike the spherical bearings used in Camber arms that soon pound out allowing metal to metal contact.


Or super hard urethane or delrin bushesthat cause binding or locking up of arms preventing them travelling through their required arcs causing more/not less severe wheel hop, loss of traction.

Bonus with the four front and four rear bushes is that they are designed with twice the load bearing area and also replace the highest wearing suspension bushings. And with K-MAC no special tools are required to fit.