IROK - Radial

Conquer Any Terrain with the Interco IROK Off-Road Tire

The Interco IROK is a force to be reckoned with off-road, meticulously engineered to dominate challenging environments. Here's why off-road enthusiasts swear by the IROK:

Unmatched Off-Road Performance:

  • Legendary Interco Three-Stage Lug (TSL) Design: Provides exceptional traction in mud, snow, and on rocks.
  • Scooped Lugs, Blade Sipes, and Cut-Resistant Compounds: These features work together to dig deep and deliver superior grip in loose surfaces.
  • Special Sidewall Features: Enhanced protection against punctures and abrasions from rocks and roots.
  • D.O.T. Approved (Most Sizes): Legal for street use, making the IROK a versatile choice.
  • Smooth Ride and Lower Road Noise: Enjoy a surprisingly comfortable ride for an off-road tire, reducing driver fatigue on long journeys.
  • Available in Bias Ply and Radial Constructions: Choose the construction that best suits your needs for durability and performance.
  • Wide Range of Sizes: Nearly 50 size combinations to fit most vehicles, with options for both on and off-road use.
  • Directional Tread: Both Bias Ply and Radial IROK tires are directional tires. Be sure to follow the recommended mounting direction for optimal performance and tread wear.
  • Made in the USA: Interco IROK bias ply and radial tires are both proudly manufactured in the USA.
  • Non-Directional IROK Option: For those seeking a non-directional tread, consider the Interco IROK ND, the IROK's "little brother." The IROK ND is a radial tire, constructed in Thailand. Click here for more information on the Interco IROK ND.

Important Note:

Bias Ply Air Pressure: Bias ply IROK tires require stricter attention to air pressure for safe highway use. Be sure to maintain the recommended air pressure for your specific tire size and load.

Rim Diameter: 15

SKU Size Aspect Ratio Section Width Weight Tire Tread Width Tire Tread Depth Tread Ply Rating Side Wall Ply Side Wall Lettering Minimum Rim Width Maximum Rim Width O.D. C.S. Revs/Mile Max PSI Max Load D.O.T. Approved
ROK-01 36x13.5R15LT 36 13.5 81 11 21/32 6 2 BSW 10 10 36.00 13.5 598 35 2810 Yes
ROK-06 39.5x13.5R15LT 39.5 13.5 92 11 21/32 6 3 BSW 10 10 39.50 13.8 504 35 3475 Yes
ROK-20 37x12.5R15LT 37 12.5 80 11 21/32 6 2 BSW 9 11 36.90 13.4 574 35 2910 Yes

Rim Diameter: 16

SKU Size Aspect Ratio Section Width Weight Tire Tread Width Tire Tread Depth Tread Ply Rating Side Wall Ply Side Wall Lettering Minimum Rim Width Maximum Rim Width O.D. C.S. Revs/Mile Max PSI Max Load D.O.T. Approved
ROK-02 36x13.5R16LT 36 13.5 85 11 21/32 10 3 BSW 10 10 36.00 13.0 598 65 3800 Yes
ROK-07 39.5x13.5R16LT 39.5 13.5 96 11 21/32 10 3 BSW 10 10 39.50 13.8 504 65 4080 Yes
ROK-21 37x12.5R16LT 37 12.5 82 11 21/32 10 3 BSW 9 11 36.90 13.3 574 65 3640 Yes
ROK-27 41x14.5R16LT 41 14.5 101 12 20/32 8 3 BSW 12 12 41.00 14.2 464 50 3850 Yes

Rim Diameter: 16.5

SKU Size Aspect Ratio Section Width Weight Tire Tread Width Tire Tread Depth Tread Ply Rating Side Wall Ply Side Wall Lettering Minimum Rim Width Maximum Rim Width O.D. C.S. Revs/Mile Max PSI Max Load D.O.T. Approved
ROK-03 36x13.5R16.5LT 36 13.5 86 11 21/32 10 3 BSW 10 10 36.00 13.0 598 65 3700 Yes
ROK-08 39.5x13.5R16.5LT 39.5 13.5 97 11 21/32 10 3 BSW 10 10 39.50 13.8 504 65 4080 Yes
ROK-22 37x12.5R16.5LT 37 12.5 86 11 21/32 10 3 BSW 8 8 36.90 13.3 574 65 3970 Yes

Rim Diameter: 17

SKU Size Aspect Ratio Section Width Weight Tire Tread Width Tire Tread Depth Tread Ply Rating Side Wall Ply Side Wall Lettering Minimum Rim Width Maximum Rim Width O.D. C.S. Revs/Mile Max PSI Max Load D.O.T. Approved
ROK-04 36x13.5R17LT 36 13.5 84 lb 11 21/32 10 3 BSW 10 10 36.00 12.4 598 65 3600 Yes
ROK-09 39.5x13.5R17LT 39.5 13.5 99 11 21/32 10 3 BSW 10 10 39.50 13.3 504 65 4080 Yes
ROK-11 33x13.5R17LT 33 13.5 67 12 21/32 8 2 BSW 10 10 33.00 13.0 678 50 2675 Yes
ROK-14 35x14.5R17LT 35 14.5 81 lb 13 21/32 8 2 BSW 10 10 35.00 14.1 625 50 3195 Yes
ROK-23 37x12.5R17LT 37 12.5 83 11 21/32 10 3 BSW 9 11 36.90 13.1 574 65 3640 Yes
ROK-28 41x14.5R17LT 41 14.5 100 12 20/32 8 3 BSW 12 12 41.00 14.2 464 50 3850 Yes
ROK-30 33x13.50R17 33 13.50 74 lb 12 21/32 10 3 BSW 9 12 33.00 12.4 378 35 3195 Yes
ROK-32 35x14.50R17 35 14.50 88 lb 13 21/32 10 3 BSW 10 12 35.00 13.4 625 65 3860 Yes

Rim Diameter: 18

SKU Size Aspect Ratio Section Width Weight Tire Tread Width Tire Tread Depth Tread Ply Rating Side Wall Ply Side Wall Lettering Minimum Rim Width Maximum Rim Width O.D. C.S. Revs/Mile Max PSI Max Load D.O.T. Approved
ROK-12 33x13.5R18LT 33 13.5 64 11 21/32 10 3 BSW 10 10 33.00 12.8 678 50 2560 Yes
ROK-15 35x14.5R18LT 35 14.5 80 13 21/32 8 2 BSW 10 10 35.00 12.8 625 50 3100 Yes
ROK-24 41x14.5R18LT 41 14.5 96 12 19/32 8 2 BSW 10 12 40.80 13.9 469 50 3750 Yes
ROK-33 35x14.50R18 35 14.50 86 lb 13 21/32 10 3 BS 10 12 35.00 13.4 625 65 3640 Yes

Rim Diameter: 20

SKU Size Aspect Ratio Section Width Weight Tire Tread Width Tire Tread Depth Tread Ply Rating Side Wall Ply Side Wall Lettering Minimum Rim Width Maximum Rim Width O.D. C.S. Revs/Mile Max PSI Max Load D.O.T. Approved
ROK-05 36x13.5R20LT 36 13.5 74 11 21/32 10 3 BSW 10 10 36.00 12.5 598 65 3200 Yes
ROK-10 39.5x13.5R20LT 39.5 13.5 87 11 21/32 10 3 BSW 10 10 39.50 12.8 504 65 4080 Yes
ROK-13 33x13.5R20LT 33 13.5 63 12 21/32 8 2 BSW 10 10 33.00 12.4 678 50 2510 Yes
ROK-16 35x14.5R20LT 35 14.5 78 13 21/32 8 2 BSW 10 10 35.10 12.8 622 50 2825 Yes
ROK-25 41x14.5R20LT 41 14.5 100 lb 12 19/32 8 2 BSW 12 12 40.90 15.0 492 50 3750 Yes
ROK-29 33x13.50R20 33 13.50 68 lb 12 21/32 12 3 BSW 9 12 33.00 12.4 325 80 3085 Yes
ROK-31 33x13.50R20 33 13.50 66 lb 12 21/32 10 3 BSW 9 12 33.00 12.4 378 35 2680 Yes
ROK-34 35x14.50R20 35 14.50 83 lb 13 21/32 10 3 BSW 10 12 35.00 13.4 622 65 3305 Yes

Rim Diameter: 22

SKU Size Aspect Ratio Section Width Weight Tire Tread Width Tire Tread Depth Tread Ply Rating Side Wall Ply Side Wall Lettering Minimum Rim Width Maximum Rim Width O.D. C.S. Revs/Mile Max PSI Max Load D.O.T. Approved
ROK-17 35x14.5R22LT 35 14.5 72 12 21/32 8 2 BSW 12 12 35.00 13.3 625 50 2500 Yes
ROK-26 41x14.5R22LT 41 14.5 95 13 20/32 8 2 BSW 12 12 40.90 13.9 467 50 3500 Yes
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DISCLAIMER: Every effort has been made to verify the accuracy of the listed specifications. Interco Tire Corporation cannot be held responsible for any discrepancies and as such this information should be considered as approximate.  As much as we would like to help, we cannot and will not give advice on fitting our tires to any particular vehicle.  Ride height changes due to age and use does not allow for steadfast rules.  Your local retailer may be able to help by inspecting your vehicle first hand.  Tread and side wall patterns may vary by tire size. 

Please Note: Super Swamper, Three Stage Lug® (TSL) Technology, Bogger, IROK, TrXus, Ground Hawg, Cobalt, SSR, LTB, Sticky, VorTrac, Thornbird, SX, SXII, Trailer Trac, SS-M16, IROK ND, Vampire, Vampire II, ASX, EDL, Swamp Lite, Radial Reptile, LI-EF, Black Mamba, InterForce, AquaTorque,V45, Sniper, Hawkeye, Swamper, Hurricane, Cat-5, side-lugs, and Tread Threadz are patented, trademarked and /or copyrighted terms, logos or designs of Interco Tire Corporation, including tread patterns, and may not be used for any reason without the express written consent of Interco tire Corporation.