Originally Posted by Phil325i
If you can afford it, I'm pretty sure the Ohlins Road & Track kit for the E90 fits the 135i too. Saw a used 135i fitted with the R&T kit on sale in AutoTrader a few months back. Worth a call to one of Ohlins UK suppliers..?
First option for me is to try BMW's adaptive set-up. It made a world of difference to the M3.