hi
never done a clio(?) but done an astra gte. The format is still the same though. When you have bubbles it means that it is rusting from the inside out - if someone has filled it up then this sounds reasonable.
The bad news is that the only way to cure it is to cut it out and start with fresh metal.
1jack car and remove wheel.
2 remove all filler etc, basically you need to grind/cut all offending metal away until you have good metal.
3 I promise that when you start grinding, the problem will be a hell of a lot worse - rust travels under paint.
4 you will thaen need to determine weather a wheel arch panel will do, or weather its a new wing.
5 assuming a repair panel will suffice, offer up and cut to suit
6 tack in place(mig) and hammer until fit is ok
7 weld seam, working on small areas alternating each end of the panel to minimise distorsion.
8 apply brushable seam sealer and then fill and spray etc.
Good luck - but dont settle for another bodge or it will beback in no time!! I promise
