2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 106Get this manual
TIRE INSPECTION
INSP ADJ
1)Tire characteristics influence the handling of ATV'sThe tires listed below have been approved by Yamaha Motor Co Ltdfor this modelIf other tire combinations are used, they can adversely affect your machine's handling characteristics and are therefore not recommendedManufacturer Size DUNLOP AT25 8-12 (For CDN, GB, F, CH) Front CHENG SHIN AT25 8-12 (For Oceania) DUNLOP AT25 10-12 (For CDN, GB, F, CH) Rear CHENG SHIN AT25 10-12 (For Oceania)
Type KT123 C828 KT127 C828