Aggressive good looks, enhanced cornering ability, and stronger steering response are excellent reasons to “plus-size” your performance tires and wheels. Authorized tire and wheel dealers can help you select the best combination of tire-and-wheel to maintain the same vehicle profile (roughly within 3%). This is important because larger variances can disturb transmission shift points and confuse braking system computers. Inch-up is the process of mounting a lower-profile tire and larger diameter wheel on your vehicle, resulting in a larger contact patch and a shorter sidewall. Inch-up plus sizing can be achieved in different ways; ask your authorized tire and wheel dealer about these different ways.

Plus Zero – the same wheel diameter is mounted with a tire that has a larger section width and smaller aspect ratio, so the new tire is shorter and fatter. You may need a new wheel to maintain proper rim width for the new tire.

Plus One – a one-inch larger diameter wheel is mounted on a tire with a one-step lower aspect ratio. This method always requires a new wheel.

Plus Two – a two-inch larger diameter wheel is mounted on a tire with a two-step lower aspect ratio. This method requires a new wheel.

Changing wheel diameter will affect the clearance between your tire and your vehicle’s frame or the curb. This is called Wheel Offset and must be adjusted for proper fit.

WARNING - When changing to a non-Original Equipment tire size, always consult the load and inflation charts to determine proper inflation pressure to maintain OE load-carrying capacity. Your authorized wheel dealers know this.