Tri stitch and perf leather wheels are the same thickness. No difference btw 2006 and 2007 manufacture as far as I know.
'07 E90 335xi 6MT Sparkling Graphite
Options: Premium~Sport~iDrive~Nav~HD Radio~iPod 6FL~Comfort Access~Rear Sunshade
Mods: Short Shift Knob~M-Tech Wheel~CF Interior~BBS RGRs~Passport HW~Blacklines~Rear Fogs~Shadowline Trim~Euro Xenons~Lux 4~M-Tech Front & Sides~Blackout Grille~Rear Power Outlets~Berber Mats