the M5 dont use run-flats.

but seriosly guys, 5er done many elk tests before and this is the first time this happen. The 5er isnt a dangeorus car.
The article said this happen to other 5ers as well. Funny cuase I read 10 different elk test(5er) with this carmag and they never complain before. One time they even said it was the best car in the elk test. The mag just want the attention.
So stop watering your pants of excitement.

so, is this problem found in all cars with runflat tire ?

Tires or not, this is a fairly easy test, something must have been wrong with the test car.

not all but I know for a fact that many bmw owners are changing their run-flats to normal tires. Also this isnt the first time these run-flats are in a heat discussion.
However I want to add that I dont think its only the tires to blame, these tested car had probably also calibrated the ESP wrong but I would say the run-flats are the mainfactor.

This carmag could have tested with normal tires as well to see if there is a difference. Whatever the case is, this problem will be solved...sooner or later.

I remember recently in a comparo of an Car and Driver magazine with 3 series, Lexus IS, Acura ect. that 3 series had a malfunctioning ESP that caused the car to make a 360 unintentional turn during a test. Perhaps the same happened with 5 series?

PS. The test was published in the old forum: - ONLY REGISTERED AND ACTIVATED USERS CAN SEE ALL LINKS - CLICK HERE TO REGISTER

Dont know, about that.
Here in Sweden there is debate about the new 3-series. When driving in high speed, the car feels nervous and not as stable as old 3ers. People think its the run-flats again that are a part of it.

You have mentioned that before. I guess run flats are still not as good as regular tires but give them a few years and they will be used in all cars (apart from SUVs and trucks perhaps).

run-flats are the future and I think BMW was the first carmaker to use run-flats in production cars? So it comes naturally that BMW is the carmaker in debate.

EDIT:
Here is a movie from the test. I cant see it on my MAC. Yannis can you see it and tell me what happens.

mms://qstream-wm.qbrick.com/04755/BMW/0522_bmw_high.wmv

I found that Goodyear run flats were first used as an option on the 1994 Corvette:

"First used as an option on the 1994 Corvette, Goodyear's EMT became standard on that car in the 1997 model year -- the world's first standard OE fitment of a true runflat tire."

- ONLY REGISTERED AND ACTIVATED USERS CAN SEE ALL LINKS - CLICK HERE TO REGISTER

Intresting,
"Run-flat tires can also substantially affect ride comfort and the durability of some vehicle components in real-world driving. Suspension parts, most notably. Ideally, a vehicle's structure and suspension components should be designed for the very different nature and characteristics of run-flat tires, and vice-versa."



BTW I just found out that Z8 used run-flats

Yannis,Did my movie work?