So my car failed its CT (French MOT ) on the rear tyres. Been driving round with 2 cans of tyre inflation /repair stuff in the boot. Bridgestone Potenza S001's on the front with loads of tread on them. Potenza RE050's on the back that need changing. Problem is I don't know whether they are run flat or not. Nowhere on them does it say RFT or run flat on them. So I am assuming they are the standard version of the tyre. Is that a correct assumption to make. Cheers in advance. Probably a dumb question but it is the end of the week.