Personally I'm not 100% convinced it was solely tyres that caused it and as BMW Warranty is footing the bill it makes me less inclined to get to the bottom of it but on another note here is a word of warning,,,,,it took 4 days for the dealer to get authorisation from warranty underwriters because ...

So much opinion and discussion on this issue,,,the Master Mtech I am friendly with is utterly convinced tyres caused this failure.....in fact when I explained the symptoms to him his immediate response was what's tyre sizes and condition..??

Your point is quite correct about front to rear radius being different on the standard 20" tyre sizes however it is minimal and within tolerance the system can cope with..... BMW warranty is standing up to be counted thankfully but there was no explanation as to the cause,,,I might add prior to the ...

Ok Nat what about this... I got a length of string and wrapped it round the worn fronts then cut it to length... When the same length of string is wrapped round the new rear tyres it falls short of meeting up by 60mm...my master tech tells me thus is deffo what caused the diff to explode as its all ...

Got real excited then...saw 6 thread replies and thought there was some constructive answers...!!!

Yes James.....

Master tech fiend tells me....Non star rated, rolling radius outside tolerance puts a lot of stress on the drivetrain and  Xdrive system is very sensitive to it....

Expand your theory on the way the car was raised and wheels fitted..???.....can't grasp any significance there...

My 55 plate 3.0D has destroyed a driveshaft and I imagine the diff judging by the noise lack of drive and the shaft is dislodged,,,this has occurred in just normal driving about 100 miles after fitting new rear tyres, the tyre story is that a full set of khumo k17,,I think,,have done 16000 faultless ...

[quote=""rjkc600""]Ive just fitted 2 new of these upfront, and after 150 miles they seem pretty good, even during the bedding in process they gave confidence cornering at higher speeds.

Cheap too![/quote]


Where Yu get them from ??

Bump...........

Fully aware of the branding, am curious how these might work on the X5 before I jump in..

Anyone had theses tyres on ???? Looking for feedback on them, thanks.

http://www.camskill.co.uk/smsimg/891/52 ... l--891.jpg

No questions at all, I mentioned nothing about the heater being enabled by scanner just that I was aware it was not operating as it should when the temperature was low coz there was no exhaust gases from it in minus 3 when it should have been firing up...

No was done with scanner..

Not entirely sure, the car is new to me and it was enabled more or less the same day I got it...?