wmc021

Yep a good cold morning will set the GLC43 tires skipping, Do your 21inch Conti Contact Sport have the MO marking?

wmc021

Very Sad Teckno, PM an update on your case.
I was in MB Adelaide on Saturday.. The issue we have in Oz is that not enough GLC owners are kicking up about it.
They have only had a few owners really push them for a fix.
It seems most owners are happy with MBA above update.

All I can say is if you own one keep pushing for a fix.

I bet when the GLC 63 gets here the issue will be gone.

tiger_x

They do have the MO marking.. This weekend looks like the go for cooler weather - min 7deg C, Max 16 deg C.. I'll see how it performs and report back..

I wonder if there will be a mass recall to have these new racks fitted. Time will tell..

tiger_x

Thanks Rob32R! Im having paint protection done next week, so hopefully get a few pics up after that... I cant stop driving it. Awesome piece of engineering..Absolutely love it!

wmc021

I'm surprised that they are still shipping them from the factory with these Tires.

I heard that they were going to change them from the factory for the uk market.
If they do skip on full or close to full lock the 21inch Conti Contact Sport 5 star version of the tire will improve it by 99%

Teckno

Rumour has it that Continental has agreed with MB to alter the castings to imprint MO on the casings designed to have the Star (BMW/Roll Royce version). Will be interesting, may need to check manuf date on casing to see if its a re-engineered casing, or old stock ?
Maybe Continental can advise how to diferenciate between old MO tech and new MO features, with Conti-Seal in tyre.

wmc021

Hi Teckno

Hope that rumour is right

tiger_x

Had a bit of wet weather here in Perth today. Can confirm i had a tiny bit of skipping on full lock, not hugely noticeable. Not as bad as my A250, that got worse as the tyres started to wear..

Teckno

From UK , interesting comprison.

https://www.mbclub.co.uk/forums/whee...inch-rims.html

Tyre Skipping: Now it's my fault for buying a car with 20 inch rims.

" An interesting conversation with AMG yesterday following a referral by MB C.S regarding my GLA45AMG tyre skipping.

In summary, I was informed the tyre skipping I am experiencing is characteristically different to that experienced by GLC owners. (Having viewed YouTube videos from GLC owners it's identical). An interesting assertion that I challenged due to the fact that they haven't even examined my car!!! The vacuous fluff response to that challenge was classic and somewhat incredulous.

The conversation then moved on to a suggestion that in order to reduce the tyre skipping, I change to all season tyres or winter tyres.

I then advised that due to research linked to the tyre skipping you can only obtain one tyre for a 235/40r20 AMG rim (Continental) and that is 'summer use'.

The summarised response was.... It is therefore my fault for purchasing a car with 20 inch rims.

Mmm, so I should have an in-depth knowledge of rims, tyre replacement and performance tyre characteristics before I sign on the dotted line.

(Having perused Autotrader most GLA45AMGs for sale are fitted with 20 inch rims.... Potential purchasers take note).

I bought it from an MB dealership as an ex demo with the 20 inch rims and was not informed by the sales assistant that it may tyre skip due to the larger rims, nor would I be able to fit anything other than summer tyres to my performance car- he knew I lived in Wales where snow and ice can be expected each winter.

I was eventually offered 'as a gesture of goodwill' a 50% reduction on 19 inch rims with all season tyres. I did state that if I was a GLC owners and only summer tyres were available I would be offered smaller rims and all season tyres at no cost. I was advised I'm not a GLC owner, that offer only applies to GLC owners and if I remain unhappy I can take my complaint to the Motoring Ombudsman.

In summary, I am getting the exact same MB corporate waffle as those early GLC owners who were experiencing tyre skipping and getting little joy except my having to pay more money to change rims to reduce a problem that existed when I bought the car.

Unfortunately, I suspect the critical mass of complaints by GLC owners which 'forced' MB to act will not be repeated by the very few GLA45AMG owners. I watch with interest how other non GLC owners experiencing the same problem get on.

The battle continues and constructive views of contributers to this forum would be most welcome."

I wonder if Aussie GLA's are suffering too ?

wmc021

Hi Tiger x

I noticed your temp was between 11 - 19 yesterday.

For a real test you need it to be below 9 to get a real idea.

The good thing is Perth temps must be on the way up just like Adelaide will be ( I hope.... been bloody cold here the last few days).
During the warmer months and summer you won't notice it at all.

tiger_x

Hey wmc021, yeah the temps have been pretty mild here, and like you say, they're on the way up again. Im probably not going to get a good idea until next winter now..

On a side note, i checked the date stamp on my tyres. The drivers side front was the 11 week of this year, and the passenger front was the 14 week of this year..

Did anyones tyres and rims come with a white dot stamped on each? All my tyres and rims have like a crayon white dot stamped. None of the dots on the rims line up with the dots on the tyres. Makes me think that my tyres have been off at some stage? weird.

Philamg

Can anyone in the UK who has a GLC43 and have had their tyres changed to all seasons please let me know what size tyres they have, when they were changed and the dealer that changed them, by pm if preferred.
I had arranged to have my 19 inch tyres changed to all weather in November, all agreed with MBUK and the dealer but today the dealer has informed me that he has heard they aren't changing the tyres on GLC43's, he is trying to get confirmation and I am waiting for AMG customer services to get back to me.
As you can imagine I am not best pleased by this as the mail from MBUK in February covered the fitting of all seasons on all models including GLC43's.

Teckno

Good news !!
Mercedes and Dealer have come to the Party and are helping.
Fitted today
255/45/R20
Goodyear Eagle Sport All Season ROF tyres x 4.
Made in Germany, MO Extended, Run Flat technology !!!!, rim protector, extra load 105V
Treadwear 560, Traction A, Temp A, side facing out, Wet B, Fuel C and noise 70db.
Drove home in pouring wet and cold, no crabbing, quieter and sooo much better over speed humps, would not know RFT !!
Too wet to stop and check tyre presures. So will run them in for next 500km, that will be weekend. Very optimistic this will be ok. Very surprised RFT !. Just hope M&S rating will give me 40-45000km like Pirelli, but there may be a trade off, time will tell. In US they have a 50000km g'tee, looks like Oz might miss out on this feature.
Cannot source these tyres commercially yet in Oz, hopefully the supply chain will start to stock for replacements.
Thanks for everyone's help and info, really appreciate all contributions - I have learnt a lot. .

bips

I'm so pleased for you Teckno, really I am. You've put so much into this, and I appreciate the stress it was causing. Which GLC was this? What about the other one (I've forgotten if both were crabbing)?

Teckno

Thanks, this is on 250d Wagon, with pirelli RFT.
Being considered for assistance for 250d Coupe, but rear tyres different profile.
The hunt continues for the Coupe and rear tyres. I felt it safer to have 4 shoes the same, otherwise different patterns, traction rates and computer working overtime to maintain stability - just my thoughts.
I cannot praise my Dealership high enough, once they were on the case, things started to happen. Thanks to them for positive outcome.
Thanks to fellow GLC owners from around the Globe.

bips

A piece of pure speculation. I was told by my salesman (who has since left my MB dealer, partly over the crabbing issue I think), that the GLC wasn't the only MB model affected by this. I don't recall the others, but there are other recent MB models with the same RHD conversion of that 4matic design that were at risk of crabbing.

I wonder if the 350d version of the new X series might be affected in some way? According to this article:
http://www.drive.com.au/new-car-revi...20-gxfn28.html
"From the middle of 2018 the X350d variant will join the range, with the V6 producing 190kW and 550Nm of torque, making it the most powerful ute in its class. The engine and transmission come from the Benz parts bin in this instance, as does the X350d's full-time four wheel drive system."

This intrigues me, as I do wonder whether the top of the line X series might not have been closer to what we were after. Perhaps not, but I will take a peek when they're released. But I'd be wary of a new model with a MB recently-designed 4matic AWD on RHD configuration.

tiger_x

The A class was one of them. Didnt have to be 4-matic either.. Crabbed to buggery..

Philamg

Still NO all weather tyres available in UK for 19/20 inch wheels on GLC43, only available for 21 inch. Spoke to AMG customer services today and they are still trying to source. The ones being fitted to cars with 21 inch wheels are BMW tyres.

bips

Eh? How is this possible? What causes a 2WD car to crab? You got a link to any reports or discussion?

tiger_x

I didnt research any further into the problem because i was moving it on. The tyres were 18inch conti contact sports, done about 35'000km. I had rotated them at 15'000km. The problem was most noticeable from cold, or if the car had been sitting all day under cover. Brick paving used to show up the crabbing more. Only happened on full lock.

sbce90

Update on my end.. Had front tyres replaced and aligned in Sydney. I now have the 5 * conti-seal as mentioned in earlier posts. So far so good, but need a cold and wet morning to give it the proper test!

joejt

I have a new GLC coupe 43, please check this to see if it is only my automatic, or all models: in a slope, car going down, put in reverse gear andreverse a few feet up, take foot off pedals for 5 seconds, car moves a littleforward, now try to press accelerator pedal to continue to reverse, the enginegoes OFF then the reverse gear goes to NEUTRAL on its own and car goes down theslope uncontrollable till you press the brake. Quite shocking.

Philamg

Maybe worth starting a new thread, not really to do with tyre scrubbing on full lock.

Teckno

Update on Goodyear 20" M&S All Season RFT. Diesel 250d.
Around 500km now, just ran around 220km , highway driving on cruise control, mix 80, 100 and 110kph, ave around 94kph.
Fuel usage sat on 6.0l/100 and at around 180km dropped to 5.7l/100.
Car boot fully loaded and doz bottles red on back seat.
Ride was good, no crabbing at night, temps around 9.c
TPMS showed front left tyre consistently higher pressure and temp to rest. Cold overnight was 36psi, running highway 38-39psi. Front left tyre about 1-2psi highr and temp varied up to 3.c higher. Could be sender, as this was similar to results with Pirelli. I still think the Goodyears are less fuel efficient compared to Pirelli, But not having crabbing is the offset.
Will do the same highway run next week in the Coupe, with non RFT, Michelin Latitude 3 type, 250d. No TPMS on that yet. Will post L/100 result.
My gut feel is that Goodyears are less fuel efficient, due to M&S, All Weather design. Maybe around 1l/100 less efficient, over 40,000km that coulfd be a few dollars and cents !!
Did do some cross country work on 4x4 track, very stable, on steep decent and across mud flats.
I still apperciate the Goodyears and their improved performance.
New results later next week.

ramzez

My dealer in Cambridge replaced 20 inch Pirellis for Vredenstein Quatrac 5 all season no questions asked in less than 2 weeks last month.