[Cavpilot2k]

BMW, are you listening?

This whole thread is confirmation that if you are considering the brake upgrade as standard in the US model, you should instead reduce the base price by the cost of that upgrade and offer it as an option.
There is a STRONG contingent here who would rather not have the upgraded brakes for one reason or another. (But obviously you would piss people off if you decided to make them an option but kept the base price the same).

There we go, folks - our collective plea has been made. This solution gives you the option without an increase in price (actually a reduction if you opt out).