What is the 3% rule for tires?
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. The 3% rule says that your new tire’s total outside diameter should not change by more than ±3% compared to your current tire. If the increase or decrease is bigger than 3%, you risk problems like: Tire rubbing the frame or fork.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.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.
What is the 25 cent trick on tires?
Use the 25 cent trick! Insert a 25 cent piece into the tire’s grooves with the nose of the caribou facing downward. If the caribou’s nose isn’t visible, it means the depth is superior to 6/32 of an inch. If you can see the nose, it means it’s time to change your tires. CHECKING TIRE TREAD Here’s how to check your tread with a Canadian quarter: Insert a 25-cent coin in one of the grooves with the caribou facing down. If you see the tip of its nose, it means the tread depth is less than 6/32” — so the tire probably won’t last another 10,000 km. Need new tires? Call us!
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. To make sure you’re getting the most out of your winter tires, be sure to switch between summer or all-season tires and winter tires at the correct time. By using the handy 7℃ rule: always try to change your winter tires when the average temperature begins to rise above 7℃.
What is the 20p trick for tyres?
Just take a 20p coin and insert it into the tread grooves on the tyre. If you can’t see the outer band on the coin, your tyres are above the legal limit. However, if you can see the band and that section of the coin is still visible, your tyres could be unsafe and require professional inspection by a mechanic. The 20p tyre test is really easy to do: just place a 20p coin in the main grooves of your tyre. If you can see the outer band of the 20p coin when it’s placed in the tyre, then the tyres may be dangerous and illegal and should be inspected by a tyre professional.