Anyone changed tyre size on a C43?

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Rossimo

New Member
Joined
Nov 23, 2022
Messages
14
Location
Edinburgh
Car
C43 tourer 2016
Hi. I’ve been reading some of the threads on the “crabbing” issue with some of the 4matic models. In particular for me the C43.

I bought the car from a MB dealership Feb 2022 and very quickly became aware of the bumping and rubbing of the 2 front wheels when moving a slow speeds and turning the steering wheel. It sounds like quite a few of you recommend a softer compound tyre to reduce crabbing, all season or winter tyres.

My car has the 19” AMG 5 twin spoke wheels with ContiSport Contacts 5P’s at the moment and the front tyres are badly worn on the outer sections. I’ve covered ~6000 miles in the last 10 months. I’m loathed to replace them with the exact same, not only for the unexpectedly quick wear but to try and prevent the crabbing.

Front - 225/40/R19’s
Rear - 255/35/R19’s

And this is where I’m struggling. I found Continental All Season Contacts but the tyre profiles differ to what I currently have, I can’t find an exact match in size. Having spoken to an independent specialist, they advised me that by changing the tyre sizes even slightly could cause the ABS warming lamp to appear.

Has anyone gone with different sized tyres and experienced any issues? Has someone found a set of tyres that made their crabbing problem disappear? Thanks, all.
 
I will also switch soon, probably to the Goodyear Vector 4Seasons Gen-3, as they are one of the few that come in those sizes.
Black Circle had them in stock.

 
I am mulling over upping the profile on my 19s but it's over the threshold of tolerance for the Speedo and yes the ABA sensor (TPMS should be okay I understand)

Clearance wouldn't be an issue on your SUV, but the speedo issue is one you need to consider (and I don't mean the budgie smugglers..... ;) )
 
You really need to stick to the MB specified sizes. The rolling circumference of the 225/40 and 255/35 will be very close so you can't mess with one of them or the front and rear rolling circumference will be different and the vehicle electronic systems may get confused. The other option may be to go down to 18s - check the owner manual for wheel / tyre options.
 
Question.

Why would chaning the size make any difference? Surely the compound has more to do with the effect you're describing?
 
A few places now have the Conti Allseason Contact back in stock, in the correct 19" sizes for front and rear; there's no need to fork out for another set of wheels or to change tyre sizes.
 
I will also switch soon, probably to the Goodyear Vector 4Seasons Gen-3, as they are one of the few that come in those sizes.
Black Circle had them in stock.

Thanks for the advice. Had a lengthy look last night and finally found what I’m after.
 
You really need to stick to the MB specified sizes. The rolling circumference of the 225/40 and 255/35 will be very close so you can't mess with one of them or the front and rear rolling circumference will be different and the vehicle electronic systems may get confused. The other option may be to go down to 18s - check the owner manual for wheel / tyre options.
I’d rather avoid changing the wheels if possible, but have heard others suggest the same thing. Last resort! Thanks.
 
Question.

Why would chaning the size make any difference? Surely the compound has more to do with the effect you're describing?
I get the compound should make some difference but had considered that plus coupled with the slightly larger size would also help. But clearly too many issues with going down that route. Thanks.
 
A few places now have the Conti Allseason Contact back in stock, in the correct 19" sizes for front and rear; there's no need to fork out for another set of wheels or to change tyre sizes.
I found these exact tyres late last night. Had been looking at a few places online for last couple of days, and was unable to find them in the 2 sizes I needed. Must be more stock available now with Black Circles. Ordered and will be fitted in 4 days. I’ll update here afterwards to let you all know if it helped with the crabbing. Thanks again!
 
I wouldnt go with continental all seasons if you really really really need all seasons then go Michelin cross climates.

All seasons are a compromise in all seasons. They do not excell under any circumstances.
 
I wouldnt go with continental all seasons if you really really really need all seasons then go Michelin cross climates.

All seasons are a compromise in all seasons. They do not excell under any circumstan

I wouldnt go with continental all seasons if you really really really need all seasons then go Michelin cross climates.

All seasons are a compromise in all seasons. They do not excell under any circumstances.
Good to know, thx.

Unfortunately I have only found the Contis and and Goodyear in the correct sizes on 19s.

Does anyone have any experience on the Goodyears?
 
Can you find winter tyres in the right size?
 
Hi. I’ve been reading some of the threads on the “crabbing” issue with some of the 4matic models. In particular for me the C43.

I bought the car from a MB dealership Feb 2022 and very quickly became aware of the bumping and rubbing of the 2 front wheels when moving a slow speeds and turning the steering wheel. It sounds like quite a few of you recommend a softer compound tyre to reduce crabbing, all season or winter tyres.

My car has the 19” AMG 5 twin spoke wheels with ContiSport Contacts 5P’s at the moment and the front tyres are badly worn on the outer sections. I’ve covered ~6000 miles in the last 10 months. I’m loathed to replace them with the exact same, not only for the unexpectedly quick wear but to try and prevent the crabbing.

Front - 225/40/R19’s
Rear - 255/35/R19’s

And this is where I’m struggling. I found Continental All Season Contacts but the tyre profiles differ to what I currently have, I can’t find an exact match in size. Having spoken to an independent specialist, they advised me that by changing the tyre sizes even slightly could cause the ABS warming lamp to appear.

Has anyone gone with different sized tyres and experienced any issues? Has someone found a set of tyres that made their crabbing problem disappear? Thanks, all.
This morning I had the Continental All Season Contacts fitted, and immediately noticed the crabbing has stopped. I’ve made a few stops on the way home, and usually pulling the car about at slow speeds the front tyres would bump and jump. But nothing of the sort to report which I’m pleased with.

As for the performance of these, it will become clear in the months to come. Thanks to all for your help and advice.
 
Good to know, thx.

Unfortunately I have only found the Contis and and Goodyear in the correct sizes on 19s.

Does anyone have any experience on the Goodyears?
Be interested in how you get on if you go with the Goodyears.
Can you find winter tyres in the right size?
I did see winter tyres in the correct sizes but changing back to summer tyres at some point would still mean the crabbing issue persists. I’ll see how I get in the coming 6 months with the All Season Contacts and decide if I want something else in the new year. Thanks.
 
Be interested in how you get on if you go with the Goodyears.

I did see winter tyres in the correct sizes but changing back to summer tyres at some point would still mean the crabbing issue persists. I’ll see how I get in the coming 6 months with the All Season Contacts and decide if I want something else in the new year. Thanks.
In which month did the tyres begin to skip?
 
In which month did the tyres begin to skip?
Been doing it since I bought the car in Feb 2022. Even in warmer months (for Scotland), it was no surprise to feel and hear the tyres skip when moving off a slow speed and turning the wheels either direction. It was just noticeably worse in the colder months recently.
 
Been doing it since I bought the car in Feb 2022. Even in warmer months (for Scotland), it was no surprise to feel and hear the tyres skip when moving off a slow speed and turning the wheels either direction. It was just noticeably worse in the colder months recently.
The 43 4-matiic platforms certainly have the most “noise” (I don’t mean that as a negative) but the majority of performance cars will do it, even in Summer - especially at cooler times and more so with worn tyres - but the GLC 43 hit the headlines and got a reputation for it. To be fair it is very evident on that platform.

My mate Dave tells me that his big tyres Mercedes all do it - and none of them are 43 - along with cars from other manufacturers. The common link is very low profile, very wide, very high performance tyres on a modern car.
 

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