1981-1984 Official Honda ATC250R Shop Manual, Page 236Get this manual
'83 ATC250R ADDENDUM
TIRE ASSEMBLY
Clean the rim bead seat and flangesInstall the tire on the rim from the opposite side of the valve stemCoat the rim flanges and tire bead with tire mounting lubricant
I Do not use silicone lubricantInflate the tire to seat the tire bead
CAUTION:
CAUTION:
Be careful not to inflate the tire with more than 1.2 kgcm (17 psi) of airIf the tire does not seat on the rim with 1.2 kgcm2 (17 psi) of air pressure, release the air from the tire and apply tire lubricant to the tire bead and bead seating surface of the rimThen, inflate the tire with air againDeflate the tireWait hour and inflate the tire to the specified pressureRecommended pressure Front Minpressure Maxpressure Standard tire circumference 1,900 mm (74.S in) 1,745 mm (6S.7 in)