Seat track extenders???

[Pinion]

Can't get the seat back far enough, any solutions?

[Mic10is]

solution is pretty easy.
get some 1/4"thick flat steel. I got mine from lowes.
put the seats on the flat steel toward the front and mark your mounting holes. these will be your OEM mount position so the rail extensions mount the same as the seats
Figure out how much extension you need. put the seat on the rails as far back as needed. 4" or so and mark the spots and drill it out.
drill those out.

Then get some bolts, washers and nuts.
Bolt the Seat rails in 1st using factory hardware.
then bolt the seats into the rails

here are pics of mine

[Pinion]

thanls, nice pics too, will do just that.

[Mic10is]

Here are a few more. Original pics were when they were in my IS, these are from my TI. Same seat rail extensions tho.







as you can see, its pretty simple. BMW has the flat mounting points unlike most Japanese which have angled mounts.

so its really a matter of drilling out some flat steel stock and bolting it all up