American Classic Wide Lightning Mountain Bicycle Tubeless Wheelset (Black/White - 650b x QR15) Xc/Enduro Rim Is 32Mm Wide X 22Mm Deep Ride A Smaller Lighter Tire Because It Spreads Out Across The Rim Without Sacrificing Traction And Handling Wider Rims Offer Improved Ground Control Bead Barb Technology Hooks On The Tire Bead To Secure The Tires In Place Without Burping