Selecting the right tires for the season is critical for your safety.
Here is some information that will help you choose tires best suited to weather conditions.
You can use summer tires all year round if your vehicle use, the trips you make, and the climate of your region allow you to do so. Your summer tires should always be in excellent condition, because in case of rain or snow, performance will be poor and perhaps unacceptable if the tire is worn. Note that summer tires perform very well on dry roads and have excellent grip.
Winter tires are recommended for the period beginning in early November and ending in late March. Wear on winter tires depends on your vehicle use, the trips you make, and your region's climate. Your winter tires should always be in excellent condition, because worn winter tires will be ineffective on snow as well as on wet roads. In order to maintain maximal grip on snow, Tires & Co recommends that you mount 4 winter tires to increase your vehicle's grip during the winter months and that you change these tires when tread depth falls below 0.13 inches. Finally, you should know that using winter tires will noticeably affect how your vehicle responds and its roadholding on dry roads.
All season tires are a good compromise if you use your vehicle in both winter and summer. These tires work well on all types of roads but are not specialised for any particular conditions. Compared with summer tires, on dry ground all-season tires do not perform as well and lack roadholding ability. They have less grip than winter tires on snow. Your all season tires should always be in excellent condition so that they perform well in any situation.
The anti-flat tires are called RunFlat for Pirelli, RFT for Bridgestone or PAX for Michelin. They are compulsory for vehicles, which are not equipped of spare wheel, and just have an anti-flat bomb. If you choose the wrong tire type instead of a run-flat tire, its rim may be damaged if you drive the vehicle and the tire will have to be repaired at the incident place. Please, notice that driving with an anti-flat tire allows you to reach the nearest installer at a reduced speed -e.g. 50 mph on 125 miles.