Rear tyres wearing out disproportionately

sidwadia · 7th May 2017, 20:52

Hi All,

I have been facing an issue with the premature and uneven wearing out of low profile tyres on my Mercedes E class 220 CDI Sports.

The car came with 245/40/R 18 Continental tyres which I had replaced after anound 13k kms as the rear tyres had worn out disproportionately . Now the rear tyres have again lost tread and I have got them changed with Pirelli MO 245/40/R18 tyres.

I have repeatedly asked the service adviser to check the shockers / issue with rear load bearing of the car, but to no avail. All I get as an answer is that the car is absolutely fine.

Please see the photographs attached and guide to what could be the possible reasons for this uneven tread loss and how can I get the service set up (T&T Motors Gurgaon) to identify & rectify the same.

Any help with the same would be much appreciated.

Thanks
Sid

P.S. : Mods please change the thread to any other section in case this is not the appropriate section.

Mr.Boss · 7th May 2017, 20:57

Looks like alignment issue. Can you share the alignment reports (from the beginning) If the alignment report is fine, then I doubt the culprit being kinematics change (may be because of deformed suspension links)
I suggest to get the alignment checked outside A.S.S once.

SmartCat · 7th May 2017, 21:17

I agree. Definitely looks like a rear wheel alignment issue. Had this issue with both Civic and Optra (at respective dealer workshops) - both of which needed 4-wheel alignment because of all independent suspension. Although wheel alignment is critical aspect of vehicle maintenance, I have noticed many service centers let juniors handle it. Many service centers just do a front wheel alignment.

Get it fixed at a reputed tyre shop, not the Mercedes workshop. Even in the future, get wheel alignment and balancing done outside.

R2D2 · 7th May 2017, 21:43

It's your wheel alignment, to be precise the camber. Here I assume your car hasn't seen any physical damage to the suspension and all components are in good order

Most third party workshops do NOT adjust the rear suspension alignment. Please get 4 wheel alignment and adjustment (toe-in, caster/camber) done at MB's ASC or at a competent workshop.

agambhandari · 8th May 2017, 23:22

Seems like a textbook case of incorrect camber. Other parameters could be incorrect too, but visibly that seems to be the main culprit.

Get it aligned at any good tyre shop that can do all 4 wheels. And if possible, take a look at your owner's manual or the internet to see the correct camber for your car and wheels and tell them at the time of alignment. And try to be there at the time the work is being done to make sure it really is. Can't believe a Merc A.S.S. could make such a big mistake.

Racer911 · 9th May 2017, 19:05

I've got no idea if the rear wheels on a Mercedes are adjustable but that's definitely a camber issue.

PS: if the rear suspension is independent type, then it's definitely adjustable.

next time you go to the dealers, slap that idiot hard who said there's no issue.

7th May 2017, 20:52	#1
sidwadia BHPian Join Date: May 2008 Location: Gurgaon Posts: 152 Thanked: 32 Times	Rear tyres wearing out disproportionately Hi All, I have been facing an issue with the premature and uneven wearing out of low profile tyres on my Mercedes E class 220 CDI Sports. The car came with 245/40/R 18 Continental tyres which I had replaced after anound 13k kms as the rear tyres had worn out disproportionately . Now the rear tyres have again lost tread and I have got them changed with Pirelli MO 245/40/R18 tyres. I have repeatedly asked the service adviser to check the shockers / issue with rear load bearing of the car, but to no avail. All I get as an answer is that the car is absolutely fine. Please see the photographs attached and guide to what could be the possible reasons for this uneven tread loss and how can I get the service set up (T&T Motors Gurgaon) to identify & rectify the same. Any help with the same would be much appreciated. Thanks Sid P.S. : Mods please change the thread to any other section in case this is not the appropriate section. Attached Thumbnails Last edited by GTO : 8th May 2017 at 11:36. Reason: Typos
	(2) Thanks $Received Infraction$

7th May 2017, 20:57	#2
Mr.Boss Distinguished - BHPian Join Date: Mar 2011 Location: GPS signal lost Posts: 2,811 Thanked: 7,464 Times View My Garage	re: Rear tyres wearing out disproportionately Looks like alignment issue. Can you share the alignment reports (from the beginning) If the alignment report is fine, then I doubt the culprit being kinematics change (may be because of deformed suspension links) I suggest to get the alignment checked outside A.S.S once.
	(3) Thanks

7th May 2017, 21:17	#3
SmartCat Team-BHP Support Join Date: Jun 2007 Location: Bangalore Posts: 6,418 Thanked: 42,868 Times View My Garage	re: Rear tyres wearing out disproportionately I agree. Definitely looks like a rear wheel alignment issue. Had this issue with both Civic and Optra (at respective dealer workshops) - both of which needed 4-wheel alignment because of all independent suspension. Although wheel alignment is critical aspect of vehicle maintenance, I have noticed many service centers let juniors handle it. Many service centers just do a front wheel alignment. Get it fixed at a reputed tyre shop, not the Mercedes workshop. Even in the future, get wheel alignment and balancing done outside. Last edited by SmartCat : 7th May 2017 at 21:19.
	(2) Thanks

7th May 2017, 21:43	#4
R2D2 Distinguished - BHPian Join Date: Oct 2008 Location: Pune Posts: 3,231 Thanked: 5,742 Times	re: Rear tyres wearing out disproportionately It's your wheel alignment, to be precise the camber. Here I assume your car hasn't seen any physical damage to the suspension and all components are in good order Most third party workshops do NOT adjust the rear suspension alignment. Please get 4 wheel alignment and adjustment (toe-in, caster/camber) done at MB's ASC or at a competent workshop.
	(5) Thanks

8th May 2017, 23:22	#5
agambhandari BANNED Join Date: Jun 2012 Location: Delhi,Ludhiana Posts: 1,689 Thanked: 3,052 Times View My Garage	Re: Rear tyres wearing out disproportionately Seems like a textbook case of incorrect camber. Other parameters could be incorrect too, but visibly that seems to be the main culprit. Get it aligned at any good tyre shop that can do all 4 wheels. And if possible, take a look at your owner's manual or the internet to see the correct camber for your car and wheels and tell them at the time of alignment. And try to be there at the time the work is being done to make sure it really is. Can't believe a Merc A.S.S. could make such a big mistake.
	(3) Thanks

9th May 2017, 19:05	#6
Racer911 BHPian Join Date: Aug 2013 Location: Vadodara Posts: 128 Thanked: 171 Times	Re: Rear tyres wearing out disproportionately I've got no idea if the rear wheels on a Mercedes are adjustable but that's definitely a camber issue. PS: if the rear suspension is independent type, then it's definitely adjustable. next time you go to the dealers, slap that idiot hard who said there's no issue.
	(1) Thanks