Alliance, the flagship brand of Yokohama Off-Highway Tires (YOHY), has released new sizes of the Agriflex+372 radial tire for tractors and harvesters.
Size VF750/75R46 is the largest tire ever produced by Alliance and has been designed for the largest tractor and machines. The tire claims to challenge competitors for economy and quality with Alliance VF technology delivering soil protection, efficiency gains and yield increases.
Alliance Agriflex+ 372’s success was confirmed by a scientific field experiment by SEGES Innovation in 2021. The results of the field studies revealed the positive effects of Alliance’s VF tires in comparison to conventional ones. Tested on a tractor-trailer-combination, the low inflation pressure of the Agriflex+ 372 and the Agriflex+ 389 tires cut the track depth during the application of liquid manure in half. At the same time, wheel slip was reduced by 4.4%, and measurements with a penetrometer showed lower soil compaction in the ‘VF tire tracks’ in the soil zone from 0 to 40 cm.
Furthermore, maize yields in the tracks on ‘VF tire plots’ exceeded those of the tracks on the ‘conventional tire plots’ significantly by about 12.9 harvest units per hectare, i.e. by about 10%. Depending on the working width of the liquid manure spreader, these results could translate to yield increases between 1.5 and 2.2% per hectare and calculated profit gains due to higher yields and reduced tire slippage of up to almost €80 per hectare.