no not a factory job , these are advertised in papers and on the net
you get your tyre to the right pressure then screw the top bit on
it adapts to the pressure allready inside the tyre then either shows "carnt rem"
red or green ....if the pressure drops the colour changes
sounds cool to me the skin was 2 weeks old on my car
but the boss is a mate so he put it back on
normally they say tyres fooked refuse to put it back on
fook i only drive 12 miles a day through the week @ about 40ishMPH
TO WORK & BACK