TOLERANCE STACK Articles

This write-up covers the seat bottom only, the cushion and everything underneath it. The seatback is its own animal and we haven't gotten into it yet, partly because the bottom alone turned out to be enough to chew on for one stage of the project. That's not an arbitrary stopping point either. It's where the bottom assembly naturally ends and the seatback assembly begins, and it happens to land at a convenient place to pause anyway, which we'll get to by the end of this.

The Problem: Zero Clearance Several of the seat mounting fasteners are tucked so deep or tight against factory structures that even the most compact torque wrench setups just don’t fit. These aren’t optional hardware either. They’re structural, safety-critical fasteners that directly secure the factory powered slide rails to the seat mount.