crabbing issue solved?
I know a number of you have been having 'crabbing' issues with the RHD GLC43. I'm having the same issue with my LHD and it's getting worse and worse. Have you found a solution (apart from getting smaller rims) as I read in previous posts that MB didn't do much about it.
I'm noticing tire wear in the front due to this. Is this something that is covered by MB warranty?
FYI, I have the 21" wheel setup with summer tires. 19" for winter and there is no issue.
Thanks!
"Due to the positioning of the front axle differential on right hand drive cars, the steering position differs very slightly compared to left hand drive models. When the steering is on full lock this steering angle difference can result in the front tyre skipping sensation. This is more pronounced during cold weather and when larger wheels and low profile tyres are fitted."
It will take a re-design to solve it.
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It doesn't cause tire wear, it's only an issue at full lock when parking, you aren't moving enough to wear your tires. The rapid tire wear is due to the alignment settings being wrong from the factory, almost every one of the new cars I align has very high toe-in settings, way beyond spec, and it wears the tires out quickly. Alignment should be warrantied for 1 year or 12,000 miles, but unfortunately the tires won't be.
It doesn't cause tire wear, it's only an issue at full lock when parking, you aren't moving enough to wear your tires. The rapid tire wear is due to the alignment settings being wrong from the factory, almost every one of the new cars I align has very high toe-in settings, way beyond spec, and it wears the tires out quickly. Alignment should be warrantied for 1 year or 12,000 miles, but unfortunately the tires won't be.
It doesn't cause tire wear, it's only an issue at full lock when parking, you aren't moving enough to wear your tires. The rapid tire wear is due to the alignment settings being wrong from the factory, almost every one of the new cars I align has very high toe-in settings, way beyond spec, and it wears the tires out quickly. Alignment should be warrantied for 1 year or 12,000 miles, but unfortunately the tires won't be.
You can go to the far inside of the settings, minimize toe and camber, and greatly extend tire life. We normally shoot for right in the middle but the specs are aggressive, so there's a lot of room to ease it back and save tires without compromising performance unless you are tracking the car.
There is no other suspension geometry change applicable – no front Camber or Caster, no rear Camber (and extra Toe).
Yet essential – full adjustability to fix it right the 1st time. Allowing to actually change “tire contact angles” to resolve alignment issues including costly premature edge tire wear, steering pull. All of which can be encountered in day to day commuting.
Including high cambered roads, altered height through load carrying or lowering, fitting wide profile tires, curb knock damage.
With today’s autos it is all to do with cost cutting and the ever increasing speed of vehicle assembly lines.
This is why we saw the need to reinstate from the early 90’s once again – full adjustment capability.
Note – you can purchase for front only – one position inaccurate offset bolts. But these only allow a miniscule 1/8”(3mm) change. While the K-MAC unique patented design provides precise single wrench adjustment accurately (on car under load direct on alignment rack) with more than 3 times the adjustment range.
Also the 4 front and rear bushings at the same time replace the highest wearing. The front bushings are Mono ball/2 axis design without the OEM oil and air voids. Result is notably improved brake and steering response.
K-MAC has the experience of manufacturing front and rear adjuster kits longer than any other company with worlds largest range Audi to Volvo including all the exotic makes AMG, BMW ‘M’, Porsche 991 and even Tesla!
X253 – Front Camber and Caster kit #502816K $480
Rear Camber and Extra Toe #502226K $480
Another popular kit manufactured to suit all models of X253 is set of ‘12’ bushings for the 6 ‘multi-link rear arms’. Designed to significantly improve rear end stability, reduce twitch/flex, gain traction – especially when applying power lane changing / overtaking $480.
DHL Air Express Worldwide $30 one kit / $20 each additional kit) average delivery time 4/5 days. Dealer inquiries welcome.
PayPal, Visa, or M/Card.
Is there a reference/link to this offer from MB ? I'm about to start what I expect to be an unsatisfactory conversation with my dealership in Poole about this issue - it's becoming noticeably worse now the colder weather has come. Reading the related threads, it looks like it's 'one of those things'. I'm very disappointed, and passengers have remarked on it too - I assume it has no bearing on the car safety?
24 February 2017
For the attention of Market Area Directors, Sales Directors, After Sales Directors, General Managers, Sales Managers, After Sales Managers, CSU Managers
Dear Colleague
Further to our interim update last week, we are now able to provide a more detailed technical explanation regarding this issue.
Due to the positioning of the front axle differential on right hand drive cars, the steering position differs very slightly compared to left hand drive models. When the steering is on full lock this steering angle difference can result in the front tyre skipping sensation. This is more pronounced during cold weather and when larger wheels and low profile tyres are fitted.
We can assure you that our technical specialists, as well as independent experts such as DEKRA, concur that the cars remain completely safe to drive.
Fitment of All Season tyres counteracts the sensation. We are therefore securing sufficient stocks of these to provide to customers who find this uncomfortable.
· Mercedes-Benz Cars UK will contact GLC customers who have already registered a Compass complaint:
• Customers with 17”, 18”, 19” and 20” tyres will be offered a set of All Season tyres (once available) and fitment free of charge
• For GLC 43 AMG customers who have cars with 21” tyres, a 21” All Season tyre is not currently available. We will offer these customers the option of taking 20” wheels and All Season tyres, or waiting for 21” All Season tyre availability
· We would ask you to please do the same for GLC customer complaints that you have received and managed locally or for any future GLC complaints about this issue until further notice
· Please also take the following action for customers who have ordered their car but have yet to take delivery, and for future customers of existing dealer and pipeline stock until further notice:
• Please make sure they are aware of this characteristic.
• Customers proceeding with delivery have the option to take All Season tyres as soon as they are available or to wait and change to them if/when they experience this sensation in Winter 2017/18.
• For customers who do not wish to take delivery of their GLC with summer tyres, please offer a courtesy car until the All Season tyres are available for their car.
For all the cases above concerning provision and fitment of All Season tyres, please submit a goodwill claim against damage code 2113800.
We will provide updates concerning any interaction we have with your customers, together with availability of the aftermarket All Season tyres and the logistics process involved.
Yours faithfully
David George Sally Jones
Sales Director Customer Services Director
Mercedes-Benz Cars Mercedes-Benz Cars
Emma Passmoor
Customer Services MBuk
Just went looking for these and they're a touch larger.....kind of curious what that would cause issues with outside of just the speedo being marginally off. Really hoping Michelin comes out with something by the time mine are toast. Which based off other folks getting 7-12K miles out of theirs means around spring time for me.
Oh, and the crabbing/skipping/sliding issue for me has manifested itself in more than just slow parking maneuvers. Has anyone else tried "hard" acceleration when making a left hand turn? For me my car was sliding/skipping/not turning so I had to back off, get it straight, then give it gas again. All this while traffic, that was speeding, was closing down on me. I had plenty of room to make the move especially with the car I was driving. Not like I was in a prius or the like. For MB or anyone to say that's not a safety issue is comical.
Really curious to see if the 63 will have these issues. Might have to trade up if it's not a thing with the 4matic+.
Last edited by DameMD; Dec 19, 2017 at 02:14 PM.
That said, the couple times I experienced the "crabbing" was really weird and I've never felt anything like it before in roughly 20 years of driving. I can only slightly relate it to driving the Bimmer on cold run-flats, but that was more like riding on rocks than "jumping/crabbing". I understand it happens on the 20" rims and all season tires, as well, but I haven't read the full thread on the issue to see if that's for RHD only. Anyway, my uneducated
(and unfortunate) guess is that it has something to do with the 4Matic and how it's programmed. Here's my thought: the 4Matic torque split is 31/69 front/rear and this is happening in the front...sooo, when applying gas (torque) and turning with cold tires, the weight shifts to the rear lifting the front a bit and the cold tires have little/no grip when turning, so it "bounces" or "crabs" to try and get grip. I'd bet the stability and/or electronics participates in the confusion, as well, and makes the "crabbing/jumping" even worse.Oh well, just my 2 cents and somewhat disappointing for a first time MB customer, especially if it happens in above 40 degree weather and/or warm tires. I'm honestly more worried about getting the brake squeal issue at some point...hopefully not. Overall, though, still love the 43. We'll see if that continues.
PS. Dame - would love to meet up sometime and hear your 43 with resonator delete. Too late now, but I went back/forth on getting the Performance Exhaust and decided against...to keep peace with the better half and the neighborhood.
That said, the couple times I experienced the "crabbing" was really weird and I've never felt anything like it before in roughly 20 years of driving. I can only slightly relate it to driving the Bimmer on cold run-flats, but that was more like riding on rocks than "jumping/crabbing". I understand it happens on the 20" rims and all season tires, as well, but I haven't read the full thread on the issue to see if that's for RHD only. Anyway, my uneducated
(and unfortunate) guess is that it has something to do with the 4Matic and how it's programmed. Here's my thought: the 4Matic torque split is 31/69 front/rear and this is happening in the front...sooo, when applying gas (torque) and turning with cold tires, the weight shifts to the rear lifting the front a bit and the cold tires have little/no grip when turning, so it "bounces" or "crabs" to try and get grip. I'd bet the stability and/or electronics participates in the confusion, as well, and makes the "crabbing/jumping" even worse.Oh well, just my 2 cents and somewhat disappointing for a first time MB customer, especially if it happens in above 40 degree weather and/or warm tires. I'm honestly more worried about getting the brake squeal issue at some point...hopefully not. Overall, though, still love the 43. We'll see if that continues.
PS. Dame - would love to meet up sometime and hear your 43 with resonator delete. Too late now, but I went back/forth on getting the Performance Exhaust and decided against...to keep peace with the better half and the neighborhood.

If you are in the NJ-NY area and would like to meet up let me know. I am planning to visit my family and friends in Queens and Long Island next week between Wed-Fri. I will most likely be in Queens majority of the time.
Last edited by DameMD; Dec 20, 2017 at 04:04 AM.










