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Use the PSI on the driver’s door sticker, check it cold, and ignore the max-pressure number on the tire sidewall. Standing at an air pump with no clue which PSI to trust is a common problem. Many drivers read the tire sidewall, spot the biggest number, and fill to that number. That’s the wrong place […]

A green valve cap usually marks a tire filled with nitrogen, though the cap alone does not prove the fill is still pure nitrogen. If you spotted a green cap on your wheel, the usual meaning is plain: the tire was likely inflated with nitrogen at some point. On most cars, that green piece is

Yes, a punctured tire can still be repaired after sealant use if the damage sits in the tread, the tire is cleaned, and a combo repair is used. Fix-a-Flat can get you to a shop. It does not make the tire ready for a quick plug and done. Once sealant goes in, the tire still

Most spare tires cost about $90 to $650, depending on type, size, wheel choice, and whether you buy a temporary donut or a full-size setup. If you’re typing “How Much Are Spare Tires?” into search, the price spread can look all over the place. That’s because “spare tire” can mean a skinny donut, a full-size

Yes, Michelin’s restaurant stars grew out of a travel guide created by the same tire maker to get motorists on the road. If you’ve ever asked, “Is A Michelin Star From The Tire Company?” the answer is yes. The same Michelin that makes tires also created the Michelin Guide, and that guide later turned into

Hot weather usually raises tire pressure, while leaks, worn valves, and long drives can still leave a tire low later on. A lot of drivers blame summer heat when a tire starts reading low. That sounds logical, but it skips one big detail: heat makes the air inside the tire expand. In plain terms, a

Most temporary spares need 60 psi, while a full-size spare should match the pressure listed on your door-jamb placard. If you need the plain answer, start with your car’s tire-and-loading sticker, not a guess. A compact “donut” spare often runs at 60 psi, while a full-size spare usually matches the cold pressure listed for the

A 235 tire is about 235 mm, or 9.25 inches, across its section width before wheel-width changes are factored in. If you’ve stared at a tire sidewall and wondered what the “235” is telling you, the plain answer is width. In a size like 235/45R18, that 235 marks the tire’s nominal section width in millimeters.

The retailer is the regional store name used by the same private company behind Discount Tire, founded by Bruce T. Halle. If you’ve driven through California and spotted an America’s Tire store, you may have asked the same thing many shoppers ask: is this its own company, or is it tied to Discount Tire? The

Costco Tire Centers fill tires with nitrogen, not plain shop air, and that can help pressure stay steadier between top-offs. If you’ve wondered what type of air does Costco put in tires, the answer is simple: Costco uses nitrogen inflation at its Tire Centers. That affects how your tires hold pressure, how often you may