If there’s no letter, you have a metric tire, which is known as a European size. “ST” stands for “Special Trailer.” Those are tires for trailers. It stands for “light truck tire,” the type of truck that can tow a trailer or has a 1-ton load capacity. If you see an “LT,” you have a larger vehicle. That stands for “passenger vehicle tire.” That would include vehicles like SUVs, minivans, and even small pickup trucks. Chances are, you probably will have a “P” on the tire. Consider this your tire size code, and we’ll help you crack it. You’re going to see an alphabet soup’s worth of letters and numbers, like (just as an example), P205/60R15 82S. If it’s too faint to read, or you just don’t feel like stooping down to look at your tires, you’ll possibly also find the numbers on the driver’s side door jamb, the glove box door, or on the gas tank hatch, and failing that, it’ll be in your vehicle’s owner’s manual. The numbers, as you might expect, are on the sides of your tires. You’ll need to find some important numbers in order to calculate your tire size - but that isn’t difficult.
#Tire size metric to standard calculator how to
Of course, if you are not interested in learning how to calculate tire size, and you just want somebody from Tread Connection to tell you what tire size you need and then install the tires, well, hey, we can do that, too.īut if you are interested in calculating tire sizes, here we go. So if you’re looking to have a ready answer, we’ll walk you through how to determine your tire size. Invariably, the question is: “What tire size would you like?”Īnd that’s when many of us will come up with a clever retort like, “Uh…” Or maybe: “Er…” Why would you? And yet, whenever in the past you shop tires and tire services, it’s probably the first question asked. If you don’t think about tires often, you probably don’t know your tire’s size.