Cycle News Staff | July 13, 2022
Dunlop’s new Geomax MX14 rear tire for sandy and muddy terrains is the successor to the Geomax MX12. It was engineered to increase straight-line drive without sacrificing cornering performance in soft terrain. The MX14’s new tread pattern has reduced scoop block spacing and 18-percent taller tread blocks for additional grip in soft conditions. Improved rubber compounds increase tire strength and reduce flex. Eight sizes are available to fit many makes and models, from minis to big bikes.
Here is more from Dunlop’s press release:
Dunlop is pleased to announce their all-new sand/mud terrain tire: The Geomax MX14.
Created as the successor to the Geomax MX12, the MX14 has a new pattern with reduced scoop block spacing and 18% taller tread blocks to ensure optimum grip for riders. Additionally, it has an improved rubber compound to increase tire strength and reduce flex, providing traction on straights and corner exits.
The Geomax line of tires has been the industry standard for years. Dunlop engineers have continued to evolve the Geomax series, with the MX14 being the latest result of Dunlop’s ongoing development.
The rear MX14 is designed for soft-terrain applications and to excel in extreme sand and mud conditions. Dunlop’s goal with this tire was to increase straight line drive without sacrificing cornering performance.
For the MX14, Dunlop relied on top AMA Pro racers, top MXGP racers, Team Dunlop Elite amateur riders, and the testing team at the Dunlop Proving Grounds in Huntsville, Alabama. The efforts of these individuals developed the tire on tracks in the United States and Europe, including some of Europe’s “bottomless sand” tracks on the World MX Championship schedule.
The MX14 offers increased cornering grip, slide control, start performance, shock absorption, and braking grip, with enhanced handling in deep sand/mud and even in hard-based sand/mud.
VIDEO | Geomax MX14: the new off-road sand and mud tire from Dunlop
Dunlop Geomax MX14 Rear Tire Features:
- Offers increased traction/drive-grip on starts, straights and when exiting corners, improved braking performance for more rear tire stopping power in harsh conditions.
- Perfect slide control when braking and cornering in sand and mud.
- Optimized tread blocks that can more effectively penetrate and scoop sandy/muddy terrain thanks to the new Reinforced Scoop Technology (RST) and V-Block Technology Advanced (V-BT Advanced) designs.
- New Flexible Fin Technology (FFT) allows for improved stopping power and more progressive brake control.
- New carcass construction to improve absorption and damping by adding a ply to improve linearity when load is applied.
Dunlop Geomax MX14 Rear Tire Technology:
- New Profile and Pattern that increases block height 18% taller than the MX12. Narrower block spacing distribution improves the sand/mud “scoop/paddle” effect, equating to increased dive-grip/traction and improved braking performance and slide control.
- Reinforced Scoop Technology (RST) results in a 23% increase in contact area over the MX12 to greatly improve traction/drive-grip through increased amounts of terrain being scooped.
- Advanced V-Block Technology (V-BT Advanced) is an optimized tread design and block angles for improved “scoop/paddle” effect and enhanced block angles for improved slide control at camber. These increase sand/mud penetration and “scooping effect.”
- New Flexible Fins Technology (FFT) where the crown and middle blocks have thin fins for flexible movement on the rear braking side to increase the tire footprint for additional control.
- High-Resilience rubber compound (H-RRC) and stiffer carcass create improved traction and performance through less knob flex under load.
Dunlop Geomax MX14 Rear Tire Size Chart
| Sizes |
Load/Speed Index |
Part Number |
Applicable Rims/
Recommended Rim |
Overall Diameter |
Overall Width |
Full Tread Depth |
| 70/100-10 |
41J |
45259500 |
1.40, 1.50 |
15.52 |
3.19 |
15/32 |
| 80/100-12 |
41M |
45259501 |
1.60 |
18.40 |
3.66 |
17/32 |
| 90/100-14 |
49M |
45259502 |
1.60, 1.85 |
21.47 |
4.06 |
19/32 |
| 90/100-16 |
51M |
45259503 |
1.85 |
23.68 |
4.22 |
20/32 |
| 110/100-18 |
64M |
45259507 |
2.15, 2.50, 3.00 |
27.38 |
5.00 |
21/32 |
| 100/90-19 |
57M |
45259504 |
1.85, 2.50, 2.75 |
26.95 |
4.61 |
22/32 |
| 110/90-19 |
62M |
45259505 |
2.15, 2.50, 3.00 |
27.38 |
4.73 |
23/32 |
| 120/80-19 |
63M |
45259506 |
2.50, 2.75, 3.59 |
27.34 |
5.08 |
24/32 |
For more information, visit www.dunlopmotorcycletires.com
