Z4M on track

[Fishy Dave]

Related to the ongoing thread, I still think that for what is a heavy road car the Z4M is still quick. Had a bit of fun with a mate on Monday at Castle Combe. Look away if expecting neat and tidy driving, or click if you enjoy the sound of tyres being tortured!

https://www.youtube.com/watch?v=ew2kQuKoQ1k&fe...

Cheers, Dave

[Billy_Whizzzz]

Great videos. I have a Z4M too and live very close to Castle Combe. I've tracked other BMWs I've had there but not the Z. I loved the slight unruliness and it seemed that the track brought out the best in it. We know they're not as agile as (say) Boxsters, but on a track it looked more fun given how you were playing with it. Great driving too, and also usefully quick. I noted that you also drive your friends Z4MC - did you notice much difference given how much owners bang on about (I always thought unneeded) additional stiffness?

[MOTK]

Billy_Whizzzz said:

I noted that you also drive your friends Z4MC - did you notice much difference given how much owners bang on about (I always thought unneeded) additional stiffness?

It was my MC in fact, good day of fun! Whilst there are differences between the 2 cars, most notably the geo differences and that I run a bucket in mine, I would say both of us have noted no discernable difference in terms of rigidity having driven each others cars (albeit only on track). The roadster is pretty stiff around 16000 Nm/degree I believe, and whilst the Coupe registers 32000, I think the law of diminishing returns applies here.

[Franzino]

Lots of video's of my Z4M roadster on track: https://www.youtube.com/user/MisterZ4M/videos?spfr...

[Mitch911]

Going very well there David

[Fishy Dave]

Billy_Whizzzz said:

Great videos. I have a Z4M too and live very close to Castle Combe. I've tracked other BMWs I've had there but not the Z. I loved the slight unruliness and it seemed that the track brought out the best in it. We know they're not as agile as (say) Boxsters, but on a track it looked more fun given how you were playing with it. Great driving too, and also usefully quick. I noted that you also drive your friends Z4MC - did you notice much difference given how much owners bang on about (I always thought unneeded) additional stiffness?

Thank you : )

Tom and I have chatted about this before and having swapped between each others cars more than once we are agreed that we can't feel any difference in chassis rigidity. The big differences are noise and the support given by Toms racing seat and harness. Possibly we'd feel chassis flex in the Roadster with slicks (?), but then I'd probably run a cage anyway.