could the tyre fitter have swapped alloys from front to the back, bought the car recently and noticed it had a flat on the front drivers side, garage said we will fix it guess they didn't as it kept going down local tyre place couldn't find any leeks he said keep an eye on it, jump forward a month got three second hand nearly new bridgestone run flats from this site, took them along to my local tyre place purchased one brand new one left the car for an hour while they got fitted, one week later the rear wheel drivers side is nearly flat this one has the brand new tyre fitted question is has he unknowingly put the front alloy to the back which looks like its not holding air I cant see any damage to the new tyre.