Who is the largest tire retailer?
Tire Retailer Share As of Q1 2025, Walmart is the top tire retailer by unit share, accounting for 15% of units sold, while Discount Tire leads in dollar share at 16%. If you want the cheapest tire installation, Walmart is the way to go, with the absolute lowest prices for the service — if you purchase your tires directly from the retailer.
What tyre size is legal?
The overall diameter of a wheel and tyre fitted to a vehicle must not be more than 50 mm (4WDs) or 15 mm (other vehicles) larger than the largest tyre size listed on the tyre placard and not more than 15 mm less than the smallest tyre size listed on the placard on all vehicles. As a general rule, you want replacement tires that are within 3 percent of the diameter (height) measurement of the tires originally on your vehicle.
What is the 3% tire rule?
The 3% rule states that when replacing tires, the new tire’s diameter should not differ from the original by more than 3%. This guideline helps maintain proper vehicle performance, safety system functionality, and speedometer accuracy. As a general rule, you want replacement tires that are within 3 percent of the diameter (height) measurement of the tires originally on your vehicle.