The Ironhead IDR310SP is a premium regional drive tire with sidewall protection ribs designed for all weather conditions. The addition of sidewall protector ribs, to help withstand abrasion and cuts caused by curb damage, improves the durability of the tire. This added feature will help to increase tire life and the ability to retread the worn casing to lower your overall tire cost. The open lug design provides excellent traction and is optimized to clear mud and snow from the tread voids. The square shoulder lug provides a stable ride for excellent vehicle handling and control.


  • Enhanced with Sidewall Protection Ribs
  • Open lug design for traction on and off road.
  • Tread design clears mud and snow.
  • All weather performance for excellent handling.
  • 3 Peak Mountain Snowflake denotes a true winter tire.


  • Regional Trucks
  • Tow Trucks
  • Pick-up and Delivery Trucks
Item # Size Ply T.D. L.I. 1X L.I. 2X SR O.D. S.W. R.W. L.C.C. 1X L.C.C. 2X AP
32nds in. in. in. lbs lbs psi
5548276 225/70R19.5 14.00 18 128 126 N 32.2 8.9 6.75 3,970 3,750 110
5548278 245/70R19.5 16.00 18 135 133 L 33.3 9.8 7.50 4,805 4,540 120