For example, a 205-65-15 tire has a 205mm tread width and fits on a 15-inch rim. The 65 is the aspect ratio, a measure of a tire's profile.

That's the question the tire industry is asking itself as low-profile passenger tires continue to gain a larger share in the consumer OE business and the aftermarket. According to Tire & Rim ...

While some customers are beginning to shift towards the low-profile 22.5 size due to benefits such as increased fuel efficiency, the 24.5 remains a market priority as we look to meet existing demand." ...

Ever the innovator, Kumho is launching the world’s first ultra low profile 15 Series tyre at the 2008 SEMA (Speciality Equipment Market Association) Show in Las Vegas this week (November 4-7).

Only a handful of BMWs have 55-series tires (many are 40 or 45), and 45-series tires are common on Mercedes sedans. For example, the Mercedes E350 comes with standard 245/45HR17 tires.

For example, in a tire size of 225/45R17, the “45” is the profile or aspect ratio, and that means the sidewall height is 45% of the tread width. A 225/65R17 tire, in contrast, has a taller ...