Yokohama has introduced the upgraded Alliance Agriflex+ 377 XT tire, which boasts innovative technology and a redesigned sidewall, enhancing its performance within the Agriflex+ 377 flotation tire series. This new model is specifically designed for heavy agricultural machinery, offering significant advantages in terms of load capacity and soil preservation.
Optimized for Heavy Machinery Use
The Alliance Agriflex+ 377 XT tire is tailored for use with equipment like grain carts, spreaders, and combines. Featuring ultra-flexible VF sidewall technology, it is capable of supporting up to 40% more weight than traditional radial tires while maintaining the same pressure. This improvement is key for farmers aiming to reduce soil compaction, a critical factor in maintaining soil health and crop yields.
James Crouch, the U.S. Product Manager of Agricultural Tires at Yokohama-ATG, explained that research has consistently shown that soil compaction can reduce crop yields by as much as 70%. While the impact varies based on crop types, soil conditions, and environmental factors, he emphasized that minimizing compaction while increasing load capacity benefits both soil health and farming operations.
Sidewall Innovation and CFO Designation
The Alliance Agriflex+ 377 XT also comes with a Cyclical Field Operation (CFO) designation, enhancing the tire’s performance under cyclical field conditions. The tire manufacturer stated that these Yokohama tires provide up to 55% more load capacity when operating at speeds under 10 miles per hour, ensuring stability and efficiency in various agricultural tasks.
Stratified Layer Technology (SLT) for Longer Tire Life
Incorporating Stratified Layer Technology (SLT), the Agriflex+ 377 XT enhances both performance and durability. The tire’s steel-belted structure, high-quality carcass, and stubble guard compound are designed to resist punctures and damage from sharp debris, offering farmers added protection during fieldwork.
Yokohama highlighted the updated five-spoke sidewall design on the Agriflex+ 377 XT, which draws inspiration from other models like the Alliance Agri Star II and Agriflex+ 373.
Warranty and Size Options
The new tire comes with an extensive warranty: a 10-year materials and workmanship guarantee, as well as a 5-year warranty covering stubble and field hazards. The Alliance Agriflex+ 377 XT is available in the following sizes:
- VF1000/50R25
- VF750/50R26
- VF1050/50R32
- VF650/65R38
- VF620/70R46
- VF750/60R46
This tire offers a comprehensive solution for farmers seeking to optimize their machinery’s performance while safeguarding soil health.


