hello all, i drive an 2008 335xi and RTTI does not work in The Netherlands but as soon as i cross the border with Germany, it works flawlessly. I expect this has to do with the frequency of traffic info, may it is on even decimals in Germany (like in the US) and on odd decimals in The Netherlands. Not sure.
All these cars can be made into 'european delivery program' hence i am sure the radio is indeed world frequency, no doubt about it. Having said that, i have not found a way to tune to odd decimal frequencies