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. When seasonal temperatures climb above 7 °C (46 °F), fit your wheels with summer tires.
How to find ply rating on tires?
Where to find tire ply rating and load range information. You can find the tire ply rating and load range on the tire’s sidewall. Look for the construction type, load range (often denoted by a letter, like c or e), and other tire specifications molded into the rubber. Further, a tire with a ply rating/load range of 8 is designed for heavier loads and equipment, and a tire with a ply rating/load range of 12 is designed for very heavy loads and equipment, and has the most strength and the highest load-carrying capacity of these four options.
Do 10 ply tires affect gas mileage?
The engine needs to work harder to move the extra weight, especially from a full set of 10 ply tires. Also, their stiffer sidewalls create more rolling resistance, which can further reduce gas mileage. You might have heard about load range e tires, which are a 10-ply equivalent.For hard-core towing and serious off-roading, 12-ply tires are better since they have the strength to carry the extra weight.