Tires

Rush SR spec tire guide — Nankang AR-1 semi-slick in 185/60R13 front and 205/60R13 rear. 4–6 competitive days per set, up to 35 heat cycles.

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

• 205/60R13 Rear

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.