However, the most straightforward answer is that a Jeep's flat fenders have thin angled sheet metal forming what appear to be flat, shelf-like mudguards above the front wheels. Meanwhile ...

Jeep Fender flares provide more tire clearance, cover wider tire treads, and enhance your rig’s appearance. Arguably, a Jeep Cherokee (XJ model) will give you the most bang for your off-roading buck.