First introduced in the 1930s as a safeguard against blowouts, today's run-flat tires are a variant of years of race car innovation and technology. And like other innovations, like disc and antilock ...

GREENSBORO, N.C. — A flat tire is always a bummer, but having a spare tire can help get you back on the road quickly if you have a spare tire. Consumer Reports says safety comes first if you get ...