Morrisman
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- 8,378
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- Staffordshire, England
No, heat is built up by the carcass deforming and twisting, that's where the energy goes.
Rock crawlers deflate their tyres to reduce tyre preload and allow the tyre to wrap around obstacles to get more force on a normal in the direction of travel. Or to allow a lug to grab an edge for the same reason.
It's not the increased contact patch that's giving them more grip, it's what's happening with it.
And as said before, the vast majority what you feel on a bike with a soft tyre is rolling resistance from loosing energy as heat into the carcass. Not because the contact patch is smaller per se.
11,000hp put through pair of tyres.
ETA: Looking closer, I don't think that motor is feeling very well.