Typically don't use them indoor but probably should sometimes when the track is cold. For outdoor here's the method I followed, seemed to work well for me.
20 min before the start of the race:
- Apply traction compound to clean tires.
- Start baking to 70 deg for 15 min. I wrapped the tires with the blue shop paper rags to prevent traction compound from getting the tire warmers all greasy.
- Pull off, whipe tires off, run through tech.
- Hit the track.
I typically did only one siting lap. This was for a track that was between 80-130 deg with Sorex 36R, Sorex 32R and RB30 tires.
Not sure that was absolutely the best method. I experimented with different temps and it seemed that if I got the tires too hot, the beginning of the run was kinda weird feeling. I think looking back I may only bake compound into the tires 10 min for anything over 120 deg track temp.
I was getting about 8-10 runs without rotating tires before the front tires would start showing the belts. I felt this was pretty good wear.
Hope this helps, I'm interested in reading other people's experiences.