# Tires The spec tire is the Nankang AR-1 Semi Slick. Depending on track surface you should get 4-6 competitive days from a set. Owners have seen as many as 35 heat cycles from this tire before serious degradation, depending on alignment. Many compare it to a Hoosier on its 3rd heat cycle, which is incredible performance and longevity for the cost! Tires can be ordered directly from RAW or from your dealer. The sizes are: * [185/60R13 Front](https://raw-parts.com/product/nankang-ar-1-185-60-r13/) * [205/60R13 Rear](https://raw-parts.com/product/nankang-ar-1-205-60-r13/) ## Tire Pressures Starting pressures vary by ambient temperature and driving style. These are community-tested starting points: **Nankang AR-1 (spec tire):** * Cold: 18–20 psi front, 18–20 psi rear * Target hot: 26–28 psi front and rear * Adjust cold pressure to hit target hot pressure at your track **Hoosier R7 (alternate):** * Maximum hot pressure: 24 psi * Cold starting point: 17 psi has worked well for many drivers **Hankook slicks:** * Treat similarly to Hoosier. A growing number of owners prefer these over Hoosiers at lower cost. Monitor tire temps across the surface (inside / middle / outside) to diagnose alignment and pressure issues. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://manual.rush.sr/tunables/tires.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.