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Tires come in all shapes, sizes, and designs—from classic whitewalls to knobby off-road tires. Underneath all those different looks and designs, you’ll find a series of textile plys and belts that make up the core construction of the tire. Typically, tires can be classified into one of two types: bias-ply and radial ply. What’s the

Like a chance meeting between a jealous wife and a flirty ex-girlfriend, having your pistons and valves come in contact can be very bad—and possibly destructive. That’s why it’s important to check piston-to-valve clearance, especially on racing camshafts and aggressive, high-lift street cams. The camshaft and valvetrain experts at COMP Cams put together this easy, seven-step process for checking piston-to-valve