What is the 3% rule for tires?
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. You’ll be hard pressed to find a tire shop that will do wider than about a 10.It’s highly recommended to use the exact tire size recommended for your car. However, in a pinch the tire width and aspect ratio can be changed slightly and still fit on your rim. Although this will still work, keep in mind it may have adverse effects on the performance of your car.
What is the 7 7 rule for tires?
The 7 7 rule for tires provides a simple temperature guideline for timing your seasonal tire changes. Install winter tires when daily temperatures drop to 7°C (45°F) or below for seven consecutive days. Remove them in spring after seven straight days above 7°C. When the seasonal temperature falls below 7 °C (46 °F), it’s time to switch to winter tires. Winter tires perform well in all cold weather conditions, ranging from snow and ice to wet and cold dry roads.
What is the 5 year tire rule?
While there’s no hard-and-fast rule, and no federally mandated safety guidance on when a tire should be (ahem) retired, many carmakers and experts advise replacement between five and six years from the manufacturing date. We recommend replacing tires aged 6-10 years, no matter how much tread remains. When it comes to replacing tires, things can be a little unpredictable. Mileage, condition and routine maintenance all contribute to the tire’s safety and usability. You should replace them if you think they may have compromised integrity.