Originally Posted by MSPORTWORLD
M3 CRT and M3 GTS are still more valid special eidtions then the 507.
The only difference is that the 507 is coming to the US. So BMW does know how to do special editions. I blame the US govt.
Audi brought RS5 to US. Mercedes brought C63 Black Series to US.
BMW didnt bring M3 GTS to US.