Not necessarily, but it depends on the condition of the other three tires. If the other three haven’t lost much tread depth, you may be able to replace just the one worn tire. Note that on all-wheel drive vehicles, many manufacturers recommend replacing all four tires at the same time to ensure that they all spin at the same speed, which can affect when the AWD system engages. Even with front- or rear-wheel drive cars, problems can arise with antilock braking systems if only one tire is replaced. For the best (and safest) results, our tire technicians will inspect all of your tires and recommend the replacement plan that’s right for your vehicle and tires.