Iv just got some recaro cs seats not electric with no rails anyone know where I can get some from to fit my e85 z4 because the company where I got them from do not have any to fit ! I have electric seats in now so I don’t think I can use those
I think they're side mount, so you'll need something like these or these (plus sliders).
They're not cheap either (about £200 a side).
Be careful what bases you get as there's not a lot of room for adjustment in a Z4, so if the e46 ones are offset slightly, then they may not fit straight into the Z4.
Also, make sure you've got somewhere to mount the seat belt, pre-tensioner, and occupancy sensor.