yeh he's right mate the pads on the rear for the DS2500's are only about 4mm think or something (half the thickness of the fronts i think), the way i see it as the rears do under half the work that the front does then they should wear fairly evenly so will both need replaced around the same time so it's no real issue imo
either way you can't complain considering the price and you might get the package a bit cheaper if you go for standard rear pads ??
thanks for the info. when i get mine i get the oem pads then.