Buy Pirelli Diablo Motorcycle Tyre Demon Tweeks Recommended air pressure is 193 kpaAll things being equal, a tire's inflation pressure will go down by about 1 psi every month This means that if air isn't added for two to three months, the tire's inflation pressures will probably be 2 to 3 psi low Tires are normally inflated with air (a combination of Related Products Tire Psi Chart Previous 160/60 zr17 tyre pressure