• According to this the distance between the side mounts should be 395mm:

    Runners on the outer row of mounting holes:

    Too far apart to mount the seat:

    Flip the base, look at the mounting holes:

    I moved the runners to the middle position, so they're inline with the mounting holes in the car:

    At this point the seats would mount using the supplied 5mm spacers:

    Or I can move the side mounts inward, which would mount the seat to the side-mounts with no spacers (which does strike me as better).

    However, what I'm struggling with is what this gives me over mounting the Recaro side-mounts on the OEM sliders.

    The BBI side mounts do have more mounting holes:

    Than the Recaro:

    Which as long as the seat doesn't hit the base suggests that ultimate mounting could be lower, but I have to count the thickness of the base plate in the total stack height.

    With that said, I'm really struggling to see how this base unit is going to mount the seat lower than Recaro side-mounts on the OEM sliders.

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