Originally Posted by flinchy
i personally find the chassis to be a bit too floppy for my liking - definitely not as rigid as my previous (modified) cars
Agreed. Coming from an E46 M3 and E85 Z4M, the 135i's chassis leaves A LOT to be desired in terms of stiffness. Even getting a dealer's E90 loaner several times was an improvement over the sloppy feel of my 135i. Upgrading to M3 suspensions bits has since improved the overall chassis feel for me, but it's still a far cry from what I'm used to.