how do l take off rear disk off my Peugeot 306 do l need any specel tools

Just leave it in a car park in Liverpool - it will be done for you.

As far as l know this one is not integral with the hub. So, presuming you have the wheel off and the calliper out of the way, you should see a screw(s) towards the centre of the disk. This or these may need persuading with an impact driver, but once removed the disk should pull off, though a bit of ''treatment'' with a plastic mallet may be necessary.

nothing too special , spanner hammer and screw driver

New discs will cost you about £40 this is about 10 times what a new peugeot is worth. Do not bother just get a decent car.

Sorry, l have only seen a few 306 with rear DRUM brakes.
But if u have rear disc brakes, l can not believe u have to remove the caliper as one answerer suggested. This would involve two big screws that r sealed with thread-lock glue, & a torque wrench to re-tighten them, from behind the caliper.

UNLESS YOU HAVE A GIRLING CALIPER (not Bendix) & the center of the caliper swivels upwards, leaving the lower part attached .

Peugeot uses two small phillips screws to secure the disc in place on the hub. You have to remove the 2 brake pads to tilt the disc free.
The two little phillips screws become VERY tight over the years. Sometimes l tighten them a hair MORE, to break them free from thread rust. Sometimes l carefully spray with penetrating oil, & return in a few hours. (no spray on disc!!)

Sometimes the disc is rusted firmly to the hub. This requires gentle hammering, penetrating spray from behind, & MORE hammering / vibration. Add anti-seize cream upon replacing.
Replace these screws with new ones, otherwise the slots get chewed up with every replacement. Put anti-seize cream on the new screws everytime.

you have to strip out the caliper and carrier it a cap in the cent re
of the hub take off l think its a R clip and a washer and a big nut you have to have a socket and a bar l think its a 22 m or 25 m
socket to fit and pull off the disk if it disk all round you have the girling brakes

Noe you wont need any special tools. Remove tire and wheels then remove caplier. Replace pads inspect rotors. Reinstall then bleed the brakes all around.