That is a big IF! lol I get your point and I agree with it, I'm just saying for most of us, it'd be a waste of time and electricity because we'd lose all that heat. WSBK guys are likely faster in the wet than I would be in the dry, so yeah you're probably right that they can get them around 120 F. I know I can't get mine to that. When I've come in the pits after a wet race/session, took my glove off and put my hand on the tires they felt about the same as ambient temp, just slightly above ground temp. The only time I've used warmers on rains (and on low setting) was when I was under a big garage and I could keep my bike and warmers dry...and that was during a track day actually. I don't like to get them soaking wet so if there's no roof of some sort over the bike, I don't put them on. Certainly not hurting anything by using warmers on rains, so long as you watch the pressures and make sure they're where they need to be.