$450 for rear brakes? i'm in the wrong business. i believe to measure your rotor you will have to remove the caliper to get the right access for the rotor. The rotors themselves can be had for around $35 from places like autozone and the pads for around $25. i believe the emergency brake shoes are inside the rear rotor. maybe the dealer was pricing their replcement too. in this case the shoes are probably very pricy from the dealer. you might be able to measure the rotors by removing the pads from the caliper. i believe this is fairly easy on your car because the caliper loads from the top. later v70
s require removal of the caliper.