The yellow warning came on permanently on the display. Moved screen to the Tpms and sure enough driver side rear read 0.8. I usually run with 2.3. I first noticed the display going to work on the Thursday morning. On Friday i went to the tyre fitters on the Thursday night i pumped them up but by Friday morning they had lost a bit but the yellow warning had vanished. At the tyre fitters the pumped it up to 2.3 exactly and checked all the others they said see how you go come back if they go down. It did i took it back on the Monday this time they took the wheel off to reveal it had a puncture smack back in the middle of the tread. It was a small piece of a small dia drill bit. Anyhow it could be repaired and was at a cost of £34. So im happy with run flats they got me to work Sat ,Sun and Mon. I know a few of you dont like em and are opting to get normal tyres fitted. They bought me some time like they are supposed to do i dont think they are noisy but i know they are noisier than normal. Im happy with them and whats more the tyre was repaired. Im going to get this winter out of them and change the rears in spring and fronts in August. I will post on another thread what im going to put on, i think weve discussed what type of tyre.