Bigger tires are one of the best modifications you can make to your side-by-side. A larger diameter can make short work of obstacles by improving your ground clearance, approach, and departure angles. On some rigs stepping up a tire size or two is as simple as bolting on new rubber, but on a machine like the Can-Am Defender, bigger shoes require a little more work. Mark Hoyer has been busy prepping the Dirty Defender for an adventure out West, and that means new 32-inch Kenda tires. But fitting them requires a modified suspension, beefier axles, and a specially tuned clutch.