I've got an issue with my car which I'm beginning to think might be of my own making...... Every 6 months or so I'm finding that the rear pads appear to be sticking slightly on (usually given away by the smell!) and when I remove the pads I find that 1 or more of each guide pin that the caliper is supposed to float/slide on is well and truly seized in the caliper carrier! Now, in the past I've just unbolted the caliper, removed the guide pins , cleaned them thoroughly and after lightly greasing them, put them back into the caliper carrier......... Now, I don't think my calipers are sticking (famous last words I know), but I'm now wondering if the act of greasing these guide pins (with a small amount of copper grease) is whats causing the problem? Over time, I'm theorising that this grease is becoming a solid gunk (the discs/pads do get pretty hot don't they) and it is this that is causing the caliper no longer to slide effectively. The guide pin is very tight into the caliper carrier at the best of times, so the amount of grease applied is very minimal, but now I'm wondering if the whole guide pin/caliper carrier assembly should just be totally clean , devoid of any lubricant? The Haynes mentions nothing about the guide pins really (other than to use new guide pin bolts), the same goes for Elsawin. Can anyone advise me about these pins? I've got a plan on the weekend to get both rear wheels off and totally degrease these caliper guide pins,to save potential future hassle but I'd be a lot happier knowing whether they should be lubricated or not.......... Thanks!