My original front wheels on my 3 year old Terracan were very pitted and my dealers recently changed them under warranty. The existing tyres (BF Goodrich Macadams) were refitted and, to cut a very long story short, they are both losing pressure, big time - up to 9psi in 24 hours! I have to pump them up twice a day!! The first time it happened, I called my mobile tyre fitter thinking I had collected a puncture but he could not find one and the tyre was refitted with a new valve. Since then, the car has been back to the dealers twice to have the tyres re-fitted. As a double check, they have now refitted one of my old, scruffy wheels but it's still losing pressure, albeit not so drastically - 5psi in 5 days. Very strange, because before the 'new' wheels were fitted, the tyres hardly ever need air. The tyres still have lots of tread - one was new in Oct 06. I am at the end of my tether right now. Have I had a double, non punture related problem with my old tyres at the same time - or are the shiny new wheels to blame? Anyone had a similar experience?

I'm thinking about buying a kiddy paddling pool and submerging the wheel/tyre to see where the air bubbles appear. Would inner tubes be adviseable??

All thoughts and theories would be appreciated.

sounds like they have been nicked when being fitted

HI, I remember a long time ago when i was a lad, and a tyre fitter ,i used to find that old alloy wheel would leave paint ( alloy ) flakes on old tyres, if the old tyres were refitted then its possible that old alloy is still on the bead of the tyre, will need wire brushed off, this causes a slight rim leak. Get it checked at a GOOD tyre place and give them this advise , hope this solves the prob.

regards john