3 Sep Taller, wider tires look good on pickups and their larger diameter is an easy way to gain additional ground clearance. The downside is on later-model GM pickups installing larger tires creates clearance issues with the cab side of the fender well . Even going up one tire size can result in the rear of the front. Many drivers ask themselves, "Do I need winter tires if I have all season tires on my car?" The short answer is, possibly. To understand what tires you'll need, you must first understand the differences in winter tires vs. all season tires. Every driver's needs are different depending on the weather and road conditions they. The tire is the only part of the car that touches the road. Synthetic rubber: part of the treads of car, van and 4x4 tires. A tire’s tread design - the grooves and patterns in the rubber on the top surface of the tire - is crucial to its performance.