Originally Posted by skierman64
12. Why did the US M3s get different seat bottoms than in EU? Can the Euro seat bottoms be retrofitted on the US version seat.
Because the US gets different airbags than the rest of the world. The US airbags are multi-stage airbags that deploy at different speeds depending on the amount of weight sensed on the seat. The DOT rule for the airbags is OC3-MAT. The EU airbags don't require the same type of seat sensor. If you replaced the US seat bottom with a EU seat bottom you take a chance at messing up your airbag sensor and possibly your airbag deployment.
Haha, glad I didn't find that one out the hard way.