I am presently in dispute with BMW about the fitness for purpose of run flat tyres on my 3 Series.

They are harsh, noisy and on certain types of UK road surface generate so much noise that I have to wear ear plugs.

Run Flat Ryres will probably go on an Aero but unless the suspension has been designed to work with them the noise transmitted back to the chassis will be terrible. Run flat tyres work because the side walls are ultra stiff.

The sealant goo can't be used with pressure sensors.

I am not sure what the answer is! One reason why I bought a Roadster is that I have a spare wheel that is the same as the other 4 wheels, so can be used at normal speed and for as long as is needed.

Bottom line: I will never buy another car that has run flat tyres and I'm no fan of "space saver" tryes having had to drive on the M3 at 50 mph after a puncture. In the end I pulled off and called RAC Recovery to take me home.

In most modern carsa puncture more than 30 miles from home means calling a recovery service. Insanity in my view, but tht is what it is.



Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...