anyone else grind 2nd gear in their Z4M?

[elerner61]

This transmission (at least mine) has never liked being rushed. Hasn't changed after 12 years in my garage and I gave up trying. Even using Royal Purple Synchromesh fluid didn't change that. I mostly gave up stoplight drag racing, and with more e-vehicles being able to show us their lights it just doesn't make sense anymore.

I much prefer to pull in front of them after the drama is done and then coax them to follow along into an upcoming curve at an increasing rate of speed..

[kaybat]

https://www.zpost.com/forums/showthr...hlight=shifter

[ctdriver86]

I also just bought a z4mc that had this issue. I thought it was the fluid, switched to RP and it didn't fix the issue. I run GM friction modified on my e46 m3 and have no issues with it. May try the ford fluid first after a few thou miles. Thats for that suggestion!

[Sajk]

Make sure the floor mat has not slipped forward and is blocking full clutch travel. Mine do that.

[///Mcoupe]

In my opinion , the transmission is a huge flaw and BMW were fully aware but the Z is "cheap" M so they don't care. The problem was not present in the e28,e30,e36,e46 or e90.

Others have mentioned engine mounts and fluids, truly nothing will fix it as its a design issue. You will always grind 2nd gear if you shift it as fast as you can. I hope someone can prove me wrong.

The solution: swap in the 5 speed ZF or the 6 speed 420G.

[chickdr]

The thing is it's an awesome car so I can easily overlook this flaw