Dodge Caliber Chassis, Suspension, Wheels, Tires
Found the sizes for the Rotors/Discs used on the International (Export) Calibers
They are standard across the range and it looks like the 15" Steeel Wheel is only fitted on North American models.
Brakes
Front 294 x 26mm Vented discs with ABS
Rear 262 x 10mm Solid discs with ABS