Geomax AT81

Dunlop’s vast championship experience and development expertise has been infused into the next generation of off-road tires: the all-new Geomax® AT81™ and AT81™ RC (Reinforced Construction). These new Geomax tires offer more all-around performance plus higher levels of ruggedness for off-road racing and riding.

  • AT81 rear tread block shape and distribution plus DIRTuitive Grip Design (DGD) knobs help the tire penetrate down through the surface dirt for extra traction across a broad range of off-road applications.

  • Newly formulated high-wear-resistant rear tire compound offers enhanced chipping, tearing and wear appearance.

  • Geomax AT81 rear tire carcass features two nylon plies.

  • Lateral grooves on the shoulder knobs provide additional biting edges and also allow the knobs to be more flexible.

  • Rear center blocks are arranged in-line to provide a larger contact patch for maximum traction.

  • Dunlop’s “plush pad” recess design between tread blocks enhances compliance for bump absorption and ride comfort.

  • Front tire construction includes two plies of nylon wrapped with a third ply of polyester for a strong base.

Spec Chart

Tire NameSizeLoad/Speed IndexSidewallPart Number
  • Applicable Rims
  • Recommended Rim
Overall DiameterOverall WidthFull Tread DepthMaximum Load @ PSI
Geomax AT81 Front 90/90-21 54M 32AT01
27.99 3.82 15/32
Geomax AT81 Rear 110/90-18 61M 32AT03
  • 1.85
26.14 4.80 20/32
  110/100-18 64M 32AT02
27.32 5.04 20/32
  120/90-18 65M 32AT04
27.13 5.20 20/32