E61 535D abnormal tyre wear

[bobt]

I bought my 2006 model 535D touring last a 15 months ago. It had almost new Potenza run flats when I bought it. I had a rear left puncture whilst towing a car trailer when the fuel was very low, and the tyre pressure warning did not come on as the less than 50kms fuel light overides it. Stupid! So one wrecked tyre. I bought a 2nd set of wheels and tyres of ebay (goodyear run flats), for about twice the price of one tyre. In the past year and 30k kms, I have had two rears go. Two months ago one delaminated the inner 20% of the tread but did not actually lose pressure. I changed both rears for the nearly new ones from ebay. Then yesterday another puncture. Looking at both rears the wear on the inside is 20% is at leat double the rest of the tread. I chekc the pressures regularly and keep them at around 34 PSI. Any ideas why the abmormal wear at the rear. No problems up front.

[BalhamBadger]

Can't help as such but excessive wear on the inner section of rear tyres is a recurring theme in BMWcar Magazine (or has been in the last two issues). It might be worth picking up the latest copy/looking through some back issues for details. There is also a magazine forum.

[briers]

I have no idea what the cause it but what pressure do you inflate to?

The camber is a problem but i believe making sure you are running at the upper end of the recommended pressure might reduce this abnormal inner edge wear.

[M-J-B]

I have had the same problem.

This picture shows one rear with 11,000 miles on it. I was quite shocked at the vast difference across the tread.



The edge of then tyre had gone...........completely gone!

I was told this is not unusual, it's done to the setup of the car.

[Neil.D]

The notorious 5 series inner tyre wear. It affects e39 M5's and E60's of 525d variants and above. Exceptions always allowed however.

It's down to the camber and obvious design of the rear suspension under load. To remedy it you would have to deviate from the factory setup. Personally I'd rather live with it.

[M-J-B]

Neil.D said:

Personally I'd rather live with it.

That's my choice

[phelix]

I recently replaced my Pirelli P zero Rossos (non-RFTs) after 30K miles; they were down to just over 2mm with nice even wear. Not sure why RFTs wear as they do.

[M-J-B]

phelix said:

I recently replaced my Pirelli P zero Rossos (non-RFTs) after 30K miles; they were down to just over 2mm with nice even wear. Not sure why RFTs wear as they do.

30,000 miles on the rears?

[Neil.D]

phelix said:

I recently replaced my Pirelli P zero Rossos (non-RFTs) after 30K miles; they were down to just over 2mm with nice even wear. Not sure why RFTs wear as they do.

I can only presume its down the stiff sidewalls and therefore lack of compliance/flexibility on the road surface itself.

[Neil.D]

phelix said:

I recently replaced my Pirelli P zero Rossos (non-RFTs) after 30K miles; they were down to just over 2mm with nice even wear. Not sure why RFTs wear as they do.

I can only presume its down the stiff sidewalls and therefore lack of compliance/flexibility on the road surface itself.

[phelix]

M-J-B said:

phelix said:

I recently replaced my Pirelli P zero Rossos (non-RFTs) after 30K miles; they were down to just over 2mm with nice even wear. Not sure why RFTs wear as they do.

30,000 miles on the rears?

Yup, they might have been rotated at some point, don't recall. And it just dawned on me that since I run winter tyres 4 months of the year the real mileage must be more like 20K. But I don't hoon in the 535d; I have other cars for that.

[E30M3SE]

Neil.D said:

phelix said:

I recently replaced my Pirelli P zero Rossos (non-RFTs) after 30K miles; they were down to just over 2mm with nice even wear. Not sure why RFTs wear as they do.

I can only presume its down the stiff sidewalls and therefore lack of compliance/flexibility on the road surface itself.

Yep. Combine that with a little bit of negative camber that all BMW's run and the above is the result.

Ditch the RF's and you will still have more wear in the inner edge than the outer but nothing like tread on outer and cord on inner.

Edited by E30M3SE on Monday 30th August 12:29

Edited by E30M3SE on Monday 30th August 12:30

[M-J-B]

jz325i said:

M-J-B said:

This picture shows one rear with 11,000 miles on it. I was quite shocked at the vast difference across the tread.

What does the wheel alignment settings look like for your rear wheels?

I'm away currently and don't have access to the report, but Micheldever Tyres suggested everything was as per the manufacturers guidelines when I had new tyres fitted a couple of months ago.

Personally, I think I simply drive the car hard

[M-J-B]

jz325i said:

M-J-B said:

jz325i said:

M-J-B said:

This picture shows one rear with 11,000 miles on it. I was quite shocked at the vast difference across the tread.

What does the wheel alignment settings look like for your rear wheels?

I'm away currently and don't have access to the report, but Micheldever Tyres suggested everything was as per the manufacturers guidelines when I had new tyres fitted a couple of months ago.

Personally, I think I simply drive the car hard

Hmmm... I'd be interested to see what the alignment says. Post it up when you get a chance.

Will do, I'm back Saturday.

Just hope I kept it!