Technology: Wired Tires

Buying new tires can be confusing. With thousands of models to choose from and prices ranging anywhere from $50 to more than $500 a pop, it pays to know what you’re doing. TireRack.com can help you make an informed buying decision online. The site shows the tires that fit your car–and suggests shops where you can get them installed. The site’s Tech Center explains the difference between models, and user reviews give you real-world assurance that you’ve made the right choice.