| I usually run my wets at 32fr, 31Rr and I don't use tyre warmers, I had pleanty of fun on mine at Rockingham and have raced countless times on them.
I know of racers that do use warmers on there wets and you can usually find them camped close to the assembley area at race meetings. As Iquite often end up at the far end of the paddock which at Pembrey usually means on the grass I see little point of using warmers as by the time the dummy grid is assembled prior to the warm up lap I'd have no idea how much heat was left in my tyres. So by not using them I always know where I'm starting from. Certainly doesn't take long to warm them up. | 
skidlids
Threaded Mode