Quote:
Originally Posted by spbbonzo
If there's one area that I'm still no sure about it's the handling on bumpy roads - I find it incredibly skittish when the roads are less than perfect and it seems you have to work hard to keep it in line. It's great on big sweeping A roads and on the motorway and the grip is great (even in wet weather).
At times, when scootling around the Peak District, it's been a relief to reach a smooth A road after spending time on some of the B roads in the area. On the minor roads my old TT was a much more enjoyable drive but on long distance jaunts the Z4 wins every time.
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The Run Flats will trammel on bumps. I swapped to non run flats on my E89 to avoid it. The Run Flats on the G29 perform better, not sure if it is the car or the tire, but still notice it on bumps. The stiff sidewalls of the Run flats provide no cushion on the wheel
The link describes what Trammeling is generically
https://motoringjunction.com/tips-tr...-it-dangerous/