Use of modern rubber compounds and construction creates higher quality than OEM tires of the pastFits classic/vintage bikes going back 35 years CONSTRUCTION- (Bias)Construction- (Bias)FEATURESE-markedFeaturesE-MarkedLOAD/SPEED INDEX-Load/Speed-Index64HMARKET SEGMENTCruiser / StreetMarket SegmentCruiser / StreetMounting PositionFront, RearPLY RATING4 PLYPOSITIONFront/RearPRODUCT NAMETirePly Rating4 PlyPositionFront/RearProduct NameTireRIM DIAMETER18Rim Diameter18''SECTION WIDTH4.00SIDEWALLBlackwallSTYLEVintageSidewallBlackwallStyleVintage, ClassicTIRE SIZE4.00-18TREAD PATTERN/MODELHF318TUBE TYPETube TypeTire Size4.00-18Tread Pattern/ModelHF318Tube TypeTube TypeUNITSEachUnitsEachVendor part number25-31818-400BTTWidth4''