Z4 recall and traction control

No, but they didn't disable the *switch*, did they? USE IT!

-- C.R. Krieger (Been there; done that)

"John Stolz" wrote

I wonder if the new rear tires, in conjunction with the old fronts, has caused the system to think that there is a disparity between the front and rear axle/tire speeds. There have been "stories" about DSC/ABS and the fact that you should always have exactly the same size tires on all 4 wheels.

Not saying that that's the problem, but it's something to check.

Floyd

John Stolz wrote in news: snipped-for-privacy@wanadoo.fr:

Surely the dealer knows what the modification is; since it's YOUR car maybe THEY will tell you what they did.

ScottR

Did they make 2.8 Z4s? You can't get them in the UK.

It could be that:

1. The tyres are new and not yet at their best (have you done many miles since?
2. The dodgy French mechanics have set the tyre pressures wrong.
3. As you suspect, the latest software is a bit "nannying"
4. You say "little or no throttle" - lifting off suddenly will cause the TC to intervene.

If 3 years old, it is a Z3, not a Z4. And if it is a 2002 model, it could be a 2.5 or 3.0, but not a 2.8.

Tom

Thanks, thats a very sensible suggestion (unlikemany ;-), and very likely the reason. But....

1. I didn't notice the effect when the rears were well-worn - is there a reason why smaller diameter rears wouldn't fool the traction control system in this way.
2. This makes me a little worried about the cost of a destructive puncture in one tyre of a part worn set - should the whole set be replaced? Ouch!

Anyway thanks for a sensible suggestion, I'll have to get on with wearing down those rears!