[PB66]

I have a BMW 840d and like many of the posts on this site i have experienced serious issues with tyres. The car was originally fitted with Bridgestone S007’s which ran down to minimums at 8000 miles. Like many i complained to BMW who did offer to make a contribution to the replacement of the tyres and also did a full geometry analysis (FOC) . The car was found to be aligned and no issue / fault was identified. The next set of Bridgestones did no better than the first and i was forced to change the tyres after another 6500 miles. At this time I decided to switch to Michelin Super Sport Tyres which certainly felt different as soon as they were fitted. I have now done just under 6000 miles on this latest set and the rears seem to have around 6mm of tread left which if the wear rate continues at this level should mean they are god for 15-16k. However the fronts that had done better than the rears on the Bridgestones and not fairing so well on the Michelin’s. The inside tread blocks are down to 4.8m which suggests they will run out around 9-10k and there are signs of feathering on the edges. Definitely the Michelins are better but wear is still a big issue. This is a real shame as the car is superb but the tyre wear certainly spoils the overall satisfaction

[PHICKOX]

3000 miles in on the Michelin Pilot Super sports and no crabbing or sliding on turns

The bridge stones could not get past 2000 miles

So far so good

[Colindavies247]

Hi All,

Thank you all for sharing your experiences regarding this issue. It is something I am also a victim of.

Is anyone else currently in an open dialogue with BMW regarding this issue?

Thanks in advance Colin

[Andy Whyman]

Hello, I am late joining this thread. I’m running a 840D x-drive on 20” rims, with BMW OEM fit Michelins all-round. Whilst washing the car at the weekend I cleaned the wheels and checked the tyres, all good, lots of tread 5+mm all round. But I ran my hand round the back of the tyre (inner sidewall) and cut my hand on the exposed steel braids poking through! Wheel alignment and geometry is to spec, so looks like there is a design issue in how BMW have set-up the suspension. Are there any more threads on this topic and have BMW admitted a fault or compensated for replacement tyres ? Seems ridiculous to throw away tyres that are still part-worn, and dangerous that the damage to the sidewall is unseen by the driver.

[zagaboo]

Originally Posted by Andy Whyman

Hello, I am late joining this thread. I’m running a 840D x-drive on 20” rims, with BMW OEM fit Michelins all-round. Whilst washing the car at the weekend I cleaned the wheels and checked the tyres, all good, lots of tread 5+mm all round. But I ran my hand round the back of the tyre (inner sidewall) and cut my hand on the exposed steel braids poking through! Wheel alignment and geometry is to spec, so looks like there is a design issue in how BMW have set-up the suspension. Are there any more threads on this topic and have BMW admitted a fault or compensated for replacement tyres ? Seems ridiculous to throw away tyres that are still part-worn, and dangerous that the damage to the sidewall is unseen by the driver.

Seems some admission to a problem with Michelin PS3's in the US according to this: https://bmwrepairguide.com/sib/011421.pdf

[RJC-1]

So my M850 came with ZTK pkg and amongst other things comes with Mich Pilot SS's. The car has an easy driven 3k with the rears at 9/32 but the front are 5/32 yet worn perfectly evenly…tech thinks it was due to under inflation but then why do the rears have nearly 2xs as much tread? The car is front heavy but twice as much wear? Wasn't planning on it, but after reading this thread should I bitch to bmw?

[Bigmuz7]

Well mine failed its MOT after three years old I got 12000 miles out of the original bridgestones on the rear ( the fronts were all changed several times due to pot holes ) having still got 2.5mm + on the tyres I thought they were ok... but not so .. I was driving a death trap un be knowns to me,.. the insides had gone beyond the steel which I couldn't see. They were close to blowing out.

The wear across the rest of the tyre looked even enough so initially I had no concerns. A year previously I had the geometry checked at an Arnold Clark Garage in scotland because of frontal pot hole collisions with no real concerns shown after the check.

I used to have this problem with X5's having inner tyre wear as well but stupidly I thought this car would be different.

I recommend drivers of this type of car to get underneath it and eye ball your rear tyres ! Regularly

[Beemer5to3]

@Bigmuz7 what engine is yours mate? And what tyres?

[Bigmuz7]

Originally Posted by Beemer5to3

@Bigmuz7 what engine is yours mate? And what tyres?

Its the m850 i with the 4.4 tt Those ones in the pic were Bridgestones as per factory I changed them to my favoured Michelin Pilot sports.

[Ttuite]

The posters on this thread seem to be mostly UK. My last 2 650’s would wear the rears prematurely on the inside. I had the shop adjust toe to the minimum as I don’t race. That helped greatly.

Is this problem prevalent in the 2023’s or has this been addressed by BMW?

[Beemer5to3]

Originally Posted by Ttuite

The posters on this thread seem to be mostly UK. My last 2 650’s would wear the rears prematurely on the inside. I had the shop adjust toe to the minimum as I don’t race. That helped greatly.

Is this problem prevalent in the 2023’s or has this been addressed by BMW?

It seems to affect xDrive cars fitted with the Bridgestone Potenza S007 tyres, and there's a general consensus it's a tyre issue rather than an issue with the cars themselves. My car has them and I'll be keeping a close eye on the wear, but as my car is sDrive I'm hoping I don't have the same issue.

[bloozemanAZ]

Originally Posted by Bigmuz7

Its the m850 i with the 4.4 tt Those ones in the pic were Bridgestones as per factory I changed them to my favoured Michelin Pilot sports.

Basically same thing happened to me with roughly 10,500 miles on the P Zeros that came with my M850i. Front tires were down to about 2mm and showing core on the inside edge so was clueless as hadn't check as outside edge was fine. Driving a death trap for sure. SA basically chocked it up to the camber and said nothing was out of spec.

[840D]

Front n/s tyre warning alert then within 1/2 mile pressure dropped to Zero while driving, when both front tyres removed the inside edges had completely worn to the canvas and P zeros tread was delaminated. Vehicle owned from new 15k miles, BMW Sytner deciding if going to cover £100 cost for full alignment check and returning tyres to Pirelli for inspection.
So far not much help from dealer trying to say normal - don’t think so! 5mm tread depth across tyre, but inside edge (about 25mm) worn down to canvas causing complete pressure loss.
If you have an 8 series worth checking tyre wear inner edge as serious safety issue in my opinion - pursuing BMW for investigation and compensation.

[m3_08]

Originally Posted by bloozemanAZ

Basically same thing happened to me with roughly 10,500 miles on the P Zeros that came with my M850i. Front tires were down to about 2mm and showing core on the inside edge so was clueless as hadn't check as outside edge was fine. Driving a death trap for sure. SA basically chocked it up to the camber and said nothing was out of spec.

had this on pervious cars and consider this 'normal' with heavy V8 in front. 10K miles was limit for front tires on AMG cars.
I totally agree we need to inspect tires for inner wear and be ready to order replacement. Mine came with Pzero and I definitely will not use them again.

[rw99]

I missed this tread (searching “tire” instead of “tyre”), but I do want to add my own personal experience and warning… on my M850i, a front S007 had corded on the far inner shoulder with less than 9k miles. Treadwear indicators are useless, as this failure occurs way out at the sidewall edge. Like a previous poster, I felt the inner edges on my fronts with my bare hands and was rewarded with a few torn steel belt abrasions.

I believe the S007 in OEM sizes (and alignment) is a dangerously insufficient tire for the 8 series.

Rich

[Tenac]

That looks like a tire problem for sure.

[Beemer5to3]

Originally Posted by rw99

I missed this tread (searching “tire” instead of “tyre”), but I do want to add my own personal experience and warning… on my M850i, a front S007 had corded on the far inner shoulder with less than 9k miles. Treadwear indicators are useless, as this failure occurs way out at the sidewall edge. Like a previous poster, I felt the inner edges on my fronts with my bare hands and was rewarded with a few torn steel belt abrasions.

I believe the S007 in OEM sizes (and alignment) is a dangerously insufficient tire for the 8 series.

Rich

What pressures were you running?

[RJC-1]

Originally Posted by rw99

I missed this tread (searching “tire” instead of “tyre”), but I do want to add my own personal experience and warning… on my M850i, a front S007 had corded on the far inner shoulder with less than 9k miles. Treadwear indicators are useless, as this failure occurs way out at the sidewall edge. Like a previous poster, I felt the inner edges on my fronts with my bare hands and was rewarded with a few torn steel belt abrasions.

I believe the S007 in OEM sizes (and alignment) is a dangerously insufficient tire for the 8 series.

Rich

That’s some treaty serious tread separation there. The S007 is not a great tire.

[rw99]

Originally Posted by Beemer5to3

What pressures were you running?

I’m OCD when it comes to pressures, and keep them at the door jamb sticker settings. On this car, with 20’s, that’s 39 psi.

[Rob_G77]

Are any of these runflat tires? I am not familiar with the different tire types on this car. I know mine are runflat (M850i).

Rob

[rw99]

My OEM S007 tires were not runflat.

[autobahnscott]

Originally Posted by rw99

My OEM S007 tires were not runflat.

How could BMW provide non-run flat tires (tyres) without providing a spare? Are you sure?