My last trip (series 3) thru France in May I must admit I didn't bother as no night driving was planned and arriving at Calais around 20:30 dipped lights were OK. However I did keep the set of stickons from the Mini in the car just in case a gendarme was nosy. Prior to that I have always used the round stickon but trying to find the right 'spot' on the lens was a bit hit and miss and just seemed to block the light rather than deflect it. What do the drivers to L-MC suggest?
