Plus Sizing

"INCH UP" TO PLUS ZERO, PLUS ONE, & PLUS TWO TIRE SIZE APPLICATIONS

WHAT'S "INCH UP"?

"Inch Up" is the process of mounting a lower aspect ratio tire and larger diameter wheel on your car. This creates a larger contact patch and a shorter sidewall.

WHY "INCH UP"?

"Inch Up" to improve your vehicle's performance and appearance.

• Increased steering response

• Improved dry handling

• Enhanced cornering ability

• Aggressive good looks

Lug-centric wheels require extra care in mounting on a vehicle. When using shouldered nuts instead of tapered nuts, take extra care to properly locate the wheel. Never use air tools to install high-performance wheels! Always use a torque wrench and follow accepted tightening procedures.

HIGH-PERFORMANCE WHEELS

"Inch Up" to improve your vehicle's performance and appearance.

Plus Zero
This method utilizes the same wheel diameter as OE but incorporates a tire with a larger than OE section width and smaller than OE aspect ratio. For example, replacing an OE 225/50R17 tire (on a 7.0-inch wheel) with a 235/45R17 tire would be a proper Plus Zero fitment. Note that this may require a replacement wheel to maintain proper rim width for the new tire.

Plus One
This method utilizes a 1-inch larger diameter wheel in conjunction with a tire of a one-step lower aspect ratio. An example of an appropriate Plus One fitment is to replace an OE 225/50R17 tire (26-inch overall diameter) with a 235/45R18 tire (26.4-inch overall diameter). Note that this method always requires a replacement wheel.

Plus Two
This method utilizes a 2-inch larger diameter wheel, in conjunction with a tire of a two-step lower aspect ratio. An example of an appropriate Plus Two fitment is to replace an OE 225/50R17 tire (26-inch overall diameter) with a 255/35R19 tire (26.1-inch overall diameter).

Warning: When changing to a non-OE tire size, always consult the load/inflation charts to determine proper inflation pressure to maintain OE load-carrying capacity.