The letter is your speed rating, but what we're interested in is that number — the load index. A tire's load index, as the name suggests, indicates how much weight a tire can support when it's ...

“You’re not ever gonna set the tire pressure to the max of what the thing says on the side of the tire,” Cooke said. He ...

it's unwise to have new tires with lower original load index ratings, as they will struggle to support the weight of your ...