The most frequent and maybe most frustrating breakdowns are caused by problems with the wheels and tyres. They must be treated with extreme caution because they contribute significantly to the weight of your car. Tires can degrade in two ways: by wearing out or by developing holes. Tires lose air pressure with time, so you might need to change them more frequently than you anticipated. Before spending that much money on new tyres, it would be wise to check with your warranty provider because tyres play a key role in a car's weight and safety.