This system is an extremely poor and expensive substitute for a spare wheel and tyre. The company(FIXANDGO) is beyond doubt the most unaccommodating company I have dealt with and completely refuses to either accept that their product is not as stated in their advertisements and they will not reply to correspondence regarding their shortcomings. I tried 3 tyre companies to repair my tyre including Main Fiat dealers and HAD to buy a new tyre despite the punctured tyre being normally repairable. Fiat MUST reconsider the use of this product and if possible return to the conventional system.