Dear Car Talk: Can you tell me why tire sizes are designated as they are? If I understand correctly, we have metric, English and a ratio. Like, a “235-75R15” tire is 235 millimeters wide, has a ...

Just about every hot rodder ends up installing wider-than-stock wheels and tires on his or her car. Often, the wider wheel/tire combo is based solely on looks and a "guess-timate." ("It looks good, so ...

Every month we get letters and emails from new 4x4 owners (or should we say owners new to 4x4s?) who want to know what size tire will fit on their truck. Plenty of charts are available to help ...

Correct tire and wheel fitment, combined with the right stance, can make any car stand out in a crowd. Dialing in the precise fitment is something that requires a little patience, and of course a ...

We've explained dozens of times over the years the difference between P-metric and imperial tire sizes so we won't cover a whole lot of the same ground, but we really haven't published a conversion ...

Our Wednesday Wonderings is back with a rare Sunday School edition for Easter, and it’s a meaty one. One reader, perhaps inspired by our last Wednesday Wonderings reader question on tire width rules, ...

For the last few years, tire width, air pressure, and how that air is held inside our tires have been at the center of some of the hottest bike-tech discussions among road cyclists. This is for good ...