The recommended tire pressures are marked on the tires themselves and is also noted on the VIN sticker on the tongue. Pressure recommendations for the different sized tires we’ve used over time:

 Tire Recommended pressure (psi)
Vistabule standard tire – 14” 65 psi
Vistabule spare tire – 12” (for trailers up to #890 or after 890 without electric brakes) 80 psi
Vistabule spare tire – 13” (trailers after #890) 44 psi
Daytripper standard tire – 13” 65 psi