My stock seats are pretty crap, black cloth standard seats ( actually don't look bad ) but they have zero hold. Looking at options for buckets or aftermarket sports recliners and came across these http://www.sportseats4u.co.uk/sparco-r100-vinyl-sport-seat/prod_2601.html I actually really like them, not expensive..... BUT.... will they fit? whats the max width for a low seat in a Z4? hearing lots about the shoulder bolster catching on the doors on low fitted seats.