I used to faff about lowering pressures to 22psi front and 26psi rear for off road, but gave up partly, like Jimmy because I can't be bothered when swapping from tar to trail frequently, but mainly because in mud and on soft ground it didn't find it made any real difference. On the road (with a TKC80) I'd be running 29psi front and 30psi rear (33psi fully loaded), which I find doesn't positively or negatively alter the handling, but does slow down the inevitable squaring off of the rear tyre. With road orientated tyres I stick with OE 30/33psi pressures.

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