3.00-8 (14"x3") foam-filled mobility tire with non-marking gray Powertrax knobby tread by Primo. This foam-filled mobility tire is compatible with Jazzy and Jet power chairs with keyway rims. The bead-to-bead measurement is 55 mm and it has what is referred to as a "narrow lip" profile. Please check the Compatibility tab for a full listing of known compatible models. If your model is not listed here, please be sure to check the profile and bead-to-bead measurement of your old tire to ensure compatibility. Specifications Brand: Primo Tire type: Foam-Filled Tire size: 3.00-8 (14"x3") Tread code: C248 Tread name: Powertrax Maximum weight: 250 lbs. Bead-to-Bead: 55 mm（2.165‘’) Profile: Raised lip Compatibility Jazzy 600 Jazzy 600 XL Jazzy 614 Jazzy 614 HD Pride Mini Crosser 3 Wheel (PMV130T3) Pride Mini Crosser 4 Wheel (PMV130T4) Quantum Q600 Quantum Q614