You don't really need rear discs on cars like this since all the stopping is done by the fronts.
Even performance orientated cars have massive front brakes with bigger callipers with amusingly small discs on the rear.
Given how all the weight on the Focii is in the front, I'd rather they beef up the front.
And costs, discs > drums in costs. If you are buying a base Focus chances are you don't care for discs and don't want the added costs down the line.
2012 Ford Focus Titanium Blue Candy Hatch 2009 Suzuki Swift+ - Traded in 2006 Lincoln Zephyr - Traded in
If you live in Edmonton, AB I would be more then happy to do a shoot with you!