I just came back from a week of tarmac, then dirt and gravel, then back on road, then off again. I ‘air down’ for off road and then air back up for asphalt. It’s always been a chore prior to being turned on to the Ryobi handheld, battery powered compressor. It’s far more convenient and quicker than most any other compressor or pump I’ve ever used. It makes what was an unpleasant chore in the past quick and easy. And for those that may be new riders that don’t understand the benefit of dropping pressure off road, there is a noticeable increase in control and traction. Tires at full pressure can be dangerous on dirt and especially gravel, and ineffective on sand. Low to Mid-20s is a good amount. (And There’s a well-known Adv instructor out there that advocates for 15). You can run on asphalt at speed with pressure in the low 20s (I wouldn’t do it at 15 though) but it’s best to air them up to proper pressure for max control on asphalt especially in hard curves. High speeds with low pressure can result in higher than safe heat buildup. Just a tip for new riders and those still using a using a compressor powered by an outlet or worse - hand pump.