I own a BMW 320D, just coming up to 4 years old and due for a new set of tyres. I loathe and detest the runflat tyres my car came on. In all the cars I have had I have never experienced such a hard ride, especially with the roads in their current poor state. I asked my tyre supplier, Discount Tyres of Worthing if I could switch to regular tyres. Their opinion was that I could change to conventional tyres but because the suspension is set for run flat tyres (which are much harder) it may have an adverse effect on the driving capabilities and should I be involved in an accident it may invalidate my insurance if proved that my car had tyres not of the prescribed type. I seem to be between a rock and a hard place. My car currently has 14,000 miles and it looks as if I am doomed to more runflats - do you agree?