As noted by the uniform tire quality guide (UTQG) rating system, tires have different characteristics. Further, as the Tire Category Matrix illustrates, tires of different performance characteristics will have different tread life. In addition to the UTQG ratings a tire’s profile makes it more or less susceptible to blow-out: low-profile tires can “pop off” a rim easier than high-profile tires.

Why Low-Profile Tires Are Popular - Tires for “luxury” cars tend to have a relatively high profile. These profiles have an aspect ratio of 75, 70, 65, or 60 (see Reading a Tire’s Sidewall for a brief description of aspect ratio). These tires tend to “look comfortable” and their aspect ratio helps keep the tire firmly positioned in the wheel.

Low-profile tires are intended for performance oriented cars and drivers. These tires have aspect ratios of 55, 50, 40, or lower. Such tires are very small in comparison to the rim, giving them an aggressive appearance and solid handling responsiveness. Their main drawbacks are a less comfortable ride (you feel the road more), and a higher chance that a tire “pops off” a rim or blows-out. Overall, low-profile tires improve a car’s handling and looks, and allow for larger rim diameters. This point is important for anyone consider plus-sizing their wheels.

When buying low-profile tires, check your tire dealer’s tire warranty and replacement policy. You may find that blow-outs are covered by their extended warranty, but don’t expect wheel damage to also be covered (but they may provide hazard insurance for this – always worth asking).

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