If the pockets are wider, will they collide with the seats? Take you measurments while sitting in the seat, as the seat bottom will probably deform out an inch or two with weight on it.
Z4 door panels are *probably* like E46 door panels.... Large RIM pieces that are heat stalked together. You could cut the map pockets off but the insert piece would have to be painted or finished in a very nice way in order to look like a part of a $50K+ car.
10 S1000RR | 09 F650GS | 08 E90 M3 | 07 R1200RT | 06 M Coupe | 01 M coupe