Uneven tyre wear

kolloski · 10th March 2012, 08:41

My father-in-law who is a very experienced mechanic put a new rear spring into my CDT tourer at Chrsitmas. Since then the tyre has been wearing on the outside. Thought the problem was that it needed aligning, so took it for a 'free' alignment check at the loacl garage. The garage said that the wrong spring was fitted and that was causing the wear, not the alignment.

As my father-in-law has been a mechanic for over 45 years I thought I would call him for his opinion. In his to the point northen manner he said that the garage did not know what they were talking about - the spring would not cause the wear it would be something else. He lives other end of the country so cant get the car to him to look at.

I'm confused

....be good to get others thoughts.

pab · 10th March 2012, 09:24

Rear springs should really be replaced in pairs,the springs are colour coded and the codes can be found under the rear seat base.

An incorrect rear spring or a single spring fitted can cause the tyre wear as the suspension geometry will be out.

Four wheel laser alignment is the method of tracking the car.

felixx · 10th March 2012, 09:24

Quote:

Originally Posted by kolloski

My father-in-law who is a very experienced mechanic put a new rear spring into my CDT tourer at Chrsitmas. Since then the tyre has been wearing on the outside. Thought the problem was that it needed aligning, so took it for a 'free' alignment check at the loacl garage. The garage said that the wrong spring was fitted and that was causing the wear, not the alignment.

As my father-in-law has been a mechanic for over 45 years I thought I would call him for his opinion. In his to the point northen manner he said that the garage did not know what they were talking about - the spring would not cause the wear it would be something else. He lives other end of the country so cant get the car to him to look at.

I'm confused

....be good to get others thoughts.

well have to disagree with your F-I-L you should replace springs in pairs, the new one will be stiffer then the old one so yes it could very well cause tyre wear..

Sounds to me like you have positive wheel camber, which is place more weight on the outside edge. this could be cause by the incorrect spring or maybe the spring in not seated properly.

10th March 2012, 08:41	#1
kolloski Newbie Rover 75 Tourer Join Date: Jun 2011 Location: Southampton Posts: 10 Thanks: 2 Thanked 0 Times in 0 Posts	Uneven tyre wear My father-in-law who is a very experienced mechanic put a new rear spring into my CDT tourer at Chrsitmas. Since then the tyre has been wearing on the outside. Thought the problem was that it needed aligning, so took it for a 'free' alignment check at the loacl garage. The garage said that the wrong spring was fitted and that was causing the wear, not the alignment. As my father-in-law has been a mechanic for over 45 years I thought I would call him for his opinion. In his to the point northen manner he said that the garage did not know what they were talking about - the spring would not cause the wear it would be something else. He lives other end of the country so cant get the car to him to look at. I'm confused ....be good to get others thoughts.

10th March 2012, 09:24	#2
pab Banned MG ZT V6 190+ Join Date: Sep 2008 Location: Leeds Posts: 33,223 Thanks: 41 Thanked 1,614 Times in 1,416 Posts	Rear springs should really be replaced in pairs,the springs are colour coded and the codes can be found under the rear seat base. An incorrect rear spring or a single spring fitted can cause the tyre wear as the suspension geometry will be out. Four wheel laser alignment is the method of tracking the car.