BMW 5-Series E60 - Diesel Dilemma

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Mon 29 Mar 2010 10:32
BMW 5-Series E60 - Diesel Dilemma - Silverfox61

The car was first registered Sept 08 and has run brilliantly until January 2010. It has been a nightmare, feeling as though a wheel is buckled or terribly out of balance. However, the feel changes with each trip, but always feels like a wheel tyre problem. I have had the wheels and tyres checked and it does not appear to be the problem. I have spun the wheels round on a jack and not much brake binding or disk distortion. My wife nor my garage can discern my problem!!!

In desperation I changed from filling up with diesel at my local Supermarket to a BP station, putting 2/3 tank of regular diesel to fill up. Almost immediately the car is running smoother, not quite as well as 3 months ago, but is this because I still had 1/3 of a tank of previous fuel. Will continue to run out the old fuel and top up with the BP and see what transpires.

My engine is the 525d, 19inch alloys, low profile not runflats, I have a skinny spare. Anyone else had similar?

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Mon 29 Mar 2010 20:39
BMW 5-Series E60 - Diesel Dilemma - sandy56

Big wheels- low profile tyres- could just be a wheel slightly out of balance even a damaged tyre- blame speed humps.

Have you had the wheels checked for damage, might not be visible, take the old weights of and re balanced?

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Mon 29 Mar 2010 20:41
BMW 5-Series E60 - Diesel Dilemma - Peter.N.

Wheel balance problems that keep changing charactaristics are usually due to both wheels being out of balance as the errors go in and out of phase depending on the relative positions of each wheel. I can't see how changing fuel can have any relavance to that fault, in fact in over thirty years of driving diesels I have never noticed any difference between fuels - I think its probably more to do with your blood sugar level at the time

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