Proven Alliance 643 Forestar III and radial 668 Forestar III lead a six-tyre display for forestry machines
Munich, 12 October 2026 – From timber trailers and skidders to track-equipped harvesters and agro-forestry tractors, forestry machines need tyres matched to very different loads, surfaces and operating conditions. Alliance Tires will present six application-specific solutions at INTERFORST 2026, highlighting the long-serving 643 Forestar III alongside the radial 668 Forestar III for mixed forest-and-road use. Visitors can see the range at outdoor stand FM.811/8 from 15 to 18 October 2026.
Alliance supports forestry operations with tyres developed for the different roles across the fleet. Trailer tyres must combine flotation and stability with transport performance. Forwarders and harvesters need casing protection, lateral stability and reliable track fit, while skidders require traction and resistance to damage in rough terrain.

At INTERFORST, Alliance will show the 331 and 328 for forestry trailers, the 643 Forestar III and 644 Forestar III ELIT for forwarders and harvesters, the 345 for skidders, and the 668 Forestar III for agro-forestry tractors.


The Alliance 643 Forestar III has become a long-standing choice for forwarders and harvesters, including machines that work with tracks. One example comes from Herbert Hainfellner Holzernte in Lower Austria. The forestry contractor uses the tyre on a John Deere 1270G harvester in the Gutenstein Alps, where his team regularly works on slopes of up to 48 degrees.

| “We work about 90% of the time with tracks. They have to provide stability and reliable traction when working on these steep slopes,” says Hainfellner. |

After 3,000 operating hours, he reported that the close fit in the tracks, stability and low downtime had confirmed the decision.
Alliance 643 Forestar III uses a flatter tread profile, horizontal grooves and wide shoulder lugs to support track fit and lateral stability. A reinforced casing, steel belts, reinforced bead and forestry compound provide protection against punctures, side impacts and rim slip. Alliance will display size 710/45-26.5.
Alliance 644 Forestar III ELIT combines a multi-angle tread and wide centre blocks for traction, stability and ride comfort. Its ELIT construction and broad tread create a stable footprint for load support and soil protection. Track fit depends on tyre size, track system and operating setup and should be checked for the intended application. The displayed size is 710/45-26.5.
The Alliance 668 Forestar III adds another approach to forestry work. The radial tyre is designed for agro-forestry tractors that divide their time between forest terrain and the road. Reinforced sidewalls and steel belts provide protection against punctures, while strong shoulder lugs and a wide footprint support stability and ground protection. Mud breakers aid self-cleaning, and the multi-angle lug design combines traction on loose soil with road comfort. Alliance will display size 710/55R34.
The INTERFORST display is completed by the Alliance 331 in size 500/60-22.5 and the 328 in size 500/55-17 for forestry trailers. The Alliance 345 in size 28L-26 is intended for skidders, feller bunchers and forestry mulchers, combining a 23-degree lug angle with reinforced undertread, thick sidewalls and steel belts for traction and protection in rough terrain. Visitors can compare all six tyres and discuss machine, load, rim, inflation pressure and track requirements with Alliance specialists at outdoor stand FM.811/8.
With a rich legacy spanning over 70 years, Alliance is a leading name in the off-highway tire sector. Through continuous innovation and advanced research, Alliance has been consistently offering top-tier products engineered to optimize productivity across applications. With state-of-the-art manufacturing facilities and robust research capabilities, Alliance has earned the reputation of offering a comprehensive portfolio of agricultural tires catering to diverse needs, making it the preferred choice of customers worldwide. Visit the website here
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