Maxxis MaxxVenture 20" Tire. Features: Fat Bike, E50 rating pavement tire with light mixed-surface use Single Compound: one compound throughout the tread optimized for longevity and performance E25/E50 rated tires are designed to withstand the additional weight and forces of e-bikes Specs: Model: MaxxVenture Size: 20" Width: 4.0" Casing: Dual TPI: 27 Compound: Single Bead: Non-Folding Type: Non-Tubeless Color: Black Weight: - E Bike: E50