If you are changing from RFT to Normal Tire
In my 2002 M3 I had a similar kit furnished by BMW, it served me well. Once my RFT need to come off I will change to PS2. And get myself a Conti Comfort Kit. Just sharing this information with you Fellows.
ContiComfortKit
http://www.tirerack.com/accessories/brand.jsp?brand=Continental&s_kwcid=TC|5429|conticomfortkit||S||3528063188&
$79- US
For a write up go here
http://techmax.ca/ContiComfortKit.htm
I am sure you have a similar supplier in the UK
In my 2002 M3 I had a similar kit furnished by BMW, it served me well. Once my RFT need to come off I will change to PS2. And get myself a Conti Comfort Kit. Just sharing this information with you Fellows.
ContiComfortKit
http://www.tirerack.com/accessories/brand.jsp?brand=Continental&s_kwcid=TC|5429|conticomfortkit||S||3528063188&
$79- US
For a write up go here
http://techmax.ca/ContiComfortKit.htm
I am sure you have a similar supplier in the UK