just as we wondered down the drive this avo, glanced at the car and saw a bubble, opp place for a water bead, remembered seeing an s2 xant Ets. on ebay last year with Bad rust on the rear arch area's,
Now, am i right in assuming that somethings up inside the wheel arch causing it?? Is it a case of wheel off, clean up, treat etc. or is it Inside a cavity???

(the white paint scrape on the arch was me backing in a bit Too close to the handrail by the steps to our door!