What Our Gearhead(R) Experts Are Saying: "I run Griffus Gravity 2. 5 up front and 2. 4 out back when the tracks turn rowdy. The front's taller blocks hold a line in blown-out berms, the rear's faster center keeps speed, and the 2x66 TPI casing shrugs off rock strikes. It's a set-and-send combo for bike-park days and enduro stages."Hutchinson's Griffus Gravity 29in Tire brings Racing Lab pedigree to our gnarliest days out. The Griffus tread is tuned for gravity riding: tall, well-supported edge blocks up front for precise turn-in and braking control, and a lower, faster center pattern out back that maintains a continuous contact patch for predictable drive on hardpack and mixed terrain. Built around a stout 2x66 TPI casing, this tire is made to handle downhill speeds, enduro transfers, and E-MTB torque without flinching. The tubeless-ready construction pairs with modern wide rims, and the Race Ripost rubber delivers the blend of support and compliance we want for soaking up big hits while keeping cornering grip on tap.