Quote:
Originally Posted by drwillb
It's been 3 years so I'm going from memory.
If you are doing a full swap with LSD, axles, and M3 hubs then the face of the hubs end up 10mm inboard of the 135 hubs. That's 10mm per side. So, the width is actually narrower but it offers much more options for wheels. Track width is still limited by the fenders.
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Maybe it’s the other way around? I found this guy after some googling:
Compared to the 2011 BMW 135i Coupe, the 1 Series M Coupe is 0.2 inches (5mm) longer, 2.1 inches (53mm) wider, 0.5 inches (13mm) taller, and rides on the same 104.7 inch (2659mm) wheelbase.
https://www.bmwblog.com/2010/12/10/bmw-1m-full-specifications/#:~:text=Front%20and%20rear%20track%20widths,104.7 %20inch%20(2659mm)%20wheelbase.