“My BMW motorbike's headlight (R1200 ST) had 2 x H4 Halogen bulbs stacked vertically, which resulted in excess heat and the plexiglass starting to distort. I fitted the LED bulbs (with a bit of jiggling) and the resulting temperatures so far are inpressive. (tested at daytime 23 DegC. Summer at 40 DegC is going to be interesting)”
