What is plus sizing?
Top Plus sizing is one of the easiest ways to achieve enhanced performance and change the appearance of your vehicle Converting to a “plus 1″ size means increasing the wheel diameter by 1” and selecting an appropriate tire to fit. Likewise, moving to a “plus 2″ would result in a wheel with 2” larger diameter. Note, however, that while the wheel diameter is increasing, the overall diameter of the tire remains fairly consistent (usually within +/- .04 inches) preserving the speedometer reading and gear ratio. When “plus sizing,” the tire is wider (section width) and therefore has a larger footprint. In addition, the sidewall becomes shorter (aspect ratio) and more rigid. Together, this gives better lateral stability and increased steering response.
A. Plus sizing wheels and tires has become the hottest trend among enthusiasts. Adding inches to the wheel diameter for wider, low aspect ratio tires can increase your car’s handling capabilities. The increased wheel widths in plus sizing also contribute to greater tire stability and improved cornering and maneuverability. • Plus Zero. Plus zero sizing increases the section width and lowers the aspect ratio of the tire while retaining the wheel diameter. This replacement tire increases the contact area and lowers the tread profile for improved traction and quicker response. (Ex., OE = 185/65R14, Plus 0 = 195/60R14) • Plus One. This sizing mounts tires with an increased section width and a lower aspect ratio on wheels of a wider diameter. For example, a plus one fitment for a car with 14-inch original equipment wheels would use 15-inch wheels (OE = 185/65R14, Plus 1 = 195/55R15.) As a general rule of thumb, plus one sizing increases section width by 10 mm, decreases aspect ratio by 10 p
