Hi All, I bought my first BMW last year and it has run flat tyres on it. I was looking online for some replacements and was gob smacked at the cost and little choice of them. After reading some previous posts about run flats people have told me that you can replace them with normal ones. My question is though, will this not be illegal as with run flats I do not have a spare tyre? And will my dashboard not keep on flashing an error because of the tyre pressure monitoring system? Many thanks.