dead easy, pop cap off the centre of the disc, undo the 30mm hub nut and remove the nut and depending on version of nut the washer may be built in or a seperate washer.
Undo the 2 17mm bolts on the caliper carrier, lift the carrier complete with pads off the disc (take handbrake off btw)
then disc will slide off the stub, or it should.
For some reason 3 172's I have done rear discs on the offside has always been seized on, so either use a puller or its hammer time.
Screw the caliper piston back in whilst theres no disc there, make sure the slots in it are in the right position
new disc on and tighten nut and pop cap back on
remove the old pads from the carrier, clean the carrier up and fit the new pads in it.
put the carrier back on and tighten up the 2 17mm bolts.
slide the piston pad back to the piston and then press the brake pedal* until its in contact with the disc, job done, repeat for other side
Easy job, do both side in less than an hour if theres no issues
*the cups, cable tie the bias valve closed so the full output goes to the calipers to get the piston out quicker.
For some reason renault decided to fit flexes on the pipes to the calipers, I have seen several which have collapsed internally meaning no braking effort to the caliper, I replace with copper pipe. Basically copyign the older clios, 19 and megane setups.
