2008 Yamaha Raptor 250SE / 250SE2 Factory Service Manual, Page 102Get this manual
CHECKING THE TIRES
1Measure: tire pressure Out of specificationAdjustNOTE: The low-pressure tire gauge is included as standard equipment If dust or the like is stuck to this gauge, it will not provide the correct readingsTherefore, take two measurements of the tire's pressure and use the second readingCold tire pressure Standard Minimum Maximum FrontRear 27.5 kPa (0.28 kgcm2, 4.0 psi) 24.5 kPa (0.25 kgcm2, 3.6 psi) 30.5 kPa (0.31 kgcm2, 4.4 psi)
WARNING