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Rodgard Run Flat Tire Insert Product Guide: 18" Tires and Rims The following Chart is provided to assist you in the product selection for your vehicle. Using the charts: Select a Regard Run Flat Tire Insert based on your Tire Size and Profile. The color coding chart is used for the proper selection.   NOT Recommended for your application: Please contact us.   Close Fit: Requires Detailed Application Review with our Engineers.   Best Fit: Optimal Run Flat Performance for standard roads.   Best Fit: Optimal Run Flat Performance for Rough Off-Road conditions.   Limited Run Flat Performance: Please contact us.  Tire Size  SLR  SLID  Tread 18" Low Profile  18" Get away  18" XLP  335/30R18  11.92  22.34  0.75       245/35R18  11.39   21.27   0.75        275/35R18  11.77 22.03   0.75        285/35R18   11.89 22.29  0.75       225/40R18 11.54 20.81  0.75       245/40R18 11.83 22.16  0.75       255/40R18  11.97 22.45  0.75       265/40R18   12.12 22.74  0.75       275/40R18  12.26 23.03  0.75       315/40R18  12.84 24.19  0.75       245/45R18  12.27 23.05  0.75       255/45R18  12.44   23.37  0.75       295/45R18   13.09   23.57  0.75        235/50R18   12.54  20.47  0.75       255/55R18   13.36   25.22  0.75       285/55R18 13.96 26.42  0.75       265/60R18   14.04 26.58  0.75       285/60R18   14.47 27.45  0.75       Min. order one set: [4] units. Distributors, Fleet Vehicle Users, Vehicle Builders your Inquires are Welcome! Run Flat Tire Insert Displays Are Available Click Here for Add'l Information and/or Pricing Request Return to Rodgard Run Flat Inserts Page