ADV Tire Talk Guest: Jarrett King is an ADV rider and mechanical designer at Mitas Tires.Discussion Points:1.  Air pressure – should I air down before riding off-road?2.  Why is the manufacturer's baseline pressure different from what's written on the sidewall?3.  Can a rider increase or decrease the size of the tire on the bike?Key Takeaways:- It’s interesting to observe what people think they can feel and what they can actually feel when it comes to tires.