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Griding/Knock when flooring it

Discuss problems you have had or are having with your Z4
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AC5L4T3R
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Griding/Knock when flooring it

Post by AC5L4T3R » Thu Nov 23, 2017 1:12 pm

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!
2003 Sterling Grey 2.5i - RHD car living in a LHD country.

bowler
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Location: Doncaster

Griding/Knock when flooring it

Post by bowler » Sun Dec 03, 2017 10:05 am

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?

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