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| Tires by vehicle | Tires by size | Tires by Brand |
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Tire Plus Sizing
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"Inch Up"? "Inch Up" is the process of mounting a lower aspect ratio tire & larger diameter wheel on your car. This creates a larger contact patch & a shorter sidewall. |
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Why "Inch Up"? "Inch Up" to improve your vehicle's performance & appearance.
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"Inch Up" may be done in several ways. The most popular are: "Inch Up" to improve your vehicle's performance & appearance.
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An independent research company recently conducted a test to determine the effect Inch Up has on handling. Included here is an abbreviated summary of the test results. The vehicle used for this comparison was a 1989 Mazda RX-7 SE. The original equipment tire is a 185/70HR14, & is mounted on a 5.5-inch wide wheel. The test was conducted on a dry asphalt surface. As the results from the lateral acceleration & handling course indicate, each successive plus size led to a noticeable increase in handling performance. This fitment guide recommends several Inch Up applications for both import & domestic vehicles. If the desired Inch Up application is not listed, the guidelines listed on the next page should be utilized to evaluate its appropriateness. |
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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. |
