Z4-forum.com

Hi all,

Recently got my hands on a 2003 2.5i and enjoying it thoroughly after upgrading from a Z3. However, there are a few issues with the car (which I will detail in a newbie post) and the most concerning to me is the sound I hear when accelerating during 2nd and 3rd. I hear a knock sometimes and feel a slight grinding/vibration in the gear stick. Although I'm not completely clueless when it comes to cars, I need some knowledge when it comes to such things like this so if anyone has an idea what this could be, let me know, cheers!

Could have been written by me!
Have a Z3, Recently got a 2.5 Z4. Overall very happy but experiencing similar to above under hard acceleration goes through a brief period of vibration almost grinding. Definately coming from the front, if it was front wheel drive would suspected the driveshafts?