Dtgl1

I bought a 2012 s550 CPO a year ago. Love the car. Started with a lot of tire noise about a month ago. Took into dealer today and they say, could be out of alignment ( want to charge me $150 to check) but in any case no matter what the cause, tires need to be replaced to fix at my expense. The tires are "feathered". They checked suspension and it is fine.Car got new tires and alignment as it was CPO'd. In the past year I have put 5500 mile on car. This does not make any sense to me. Any thought would be appreciated . Thanks in advance for some help on how to proceed.

Prochambers

What brand tires are on the car?

alx

Your toe and caster might be off

Awrryan

Ask for a copy of the alignment results. Brand of tires also makes a difference.

K-Mac

“Car got new tires and alignment”





. . .ONLY ALIGNMENT IS FRONT AND REAR TOE!





GONE ARE THE DAYS WHEN “FULL FRONT AND REAR WHEEL ALIGNMENT” MEANT JUST THAT.





At K-MAC we saw the need therefore to design, manufacture “precisely adjustable replacement bushings” for the front providing both Camber and Caster adjustment and with 3 times the adjustment range of the one position bolts.


For the rear also precise Camber adjustment with additional Toe adjustment to compensate for the new Camber facility.


The patented K-MAC design allows full precise ongoing front and rear adjustment capability – “single wrench” (no disassembly, on car, accurately under load).


To correctly resolve costly, premature inner edge tire wear, steering pull, improving traction, allowing to return to factory specs after curb knock damage, fitting wide profile tires / wheels, altering height or just the advantage to be able to change settings for “track days”.


YOU FIX IT RIGHT THE 1St. TIME WITH K-MAC – No more ongoing trips to dealers or alignment shops or constantly changing tire brands because of only Toe adjustment or the minimal adjustment offered from inaccurate one only position offset bolts!


Bonus is the 4 front (and the 4 rear) bushings also replace the highest wearing suspension bushes. The K-MAC patented design allows twice the load bearing area with the front bushes being 2 axis/self aligning without the use of oil and air voids. Result is improved brake, traction and steering response.


Also importantly K-MAC rear adjusters move lower arms/tires inwards when wanting to reduce inner edge tire wear/improve traction (unlike “Camber Arms” that move top of tires outwards diminishing essential clearance to outer fender).


All kits come with instructions and bush extraction/insertion tubes (MB World member Heiss Rod has kindly provided step by step picture sequence re front bush installation. See https://mbworld.org/forums/w211-amg/518431-k-mac-bushing-install-guide-w211-airmatic.html )


W221 Front kit (Camber and Caster) #502316K $480.


W221 Rear kit (Camber and Extra Toe) #502526K $480.


Including airmatic.


Special promotional price delivery for MB World members USA/CANADA $30 one kit or $40 for front and rear (average delivery time 3 – 4 days). Payment Visa, M/Card or PayPal.

Dtgl1

The tires are Continental ContisportContact2. Size is 275/35 -20. Any better brand to consider? Thanks for the help.

Awrryan

Michelin pilot super sports for summer tires. Switching to those when my OEM Pirelli p zeros wear out. They get great reviews. Only have experience with them on my Porsche 911, but I love them. Otherwise you may want to try Pirelli P zeros.

Dtgl1

It just p... Me off that after 4 new tires and alignment and only 5500 miles I need to do it again! Is this normal for the S550. I love the car but not with $2600 for tires and alignment every 5000 miles! This can't be right?

Awrryan

It's not normal at all. Did you hit a pot hole? Go over a curb too fast? I don't think its normal at all. Something is just off with your alignment. Make sure to look over alignment results.