Do they do anything for you exactly ? ...they feel like you bang your head against a brick wall for 2 hours ? orso... Though upon puncturing just before the sprint - I was only pleased to have made it round this time..... I got off the local expressway down an embankment and onto a 'normal' country lane sort of' and whilst fixing it some lady, it turns out, turns the car around and pulls up "need any help - need a mobile", no ok thanks = was expecting to be bundled into the back of the bloody car but turns out it was just nothing though made me wonder a bit. Like what woman would ask a bloke on a fine evening if he was ok...bizarre.