Patent ID: 7049949

Claim:
A method of advocating tires on a worksite and calculating on the worksite the inflation pressures of said tires for a construction vehicle having a front axle, a rear axle and a bucket intended to receive a load of material having a density DM, comprising the steps of: A) making an estimate of a filling level TR of the bucket in conditions of maximum load for use on the worksite; B) calculating a load CG created by the material filled to the filling level TR in the bucket from the bucket capacity VG and the estimated values for density DM and filling level TR; C) calculating an overload V on the front axle from a tipping load CB which would produce a tipping of said vehicle; D) verifying the value obtained for the overload V on the front axle from observations made when the vehicle is loaded to its maximum load for use on the worksite and when empty; E) if the result of the verification of step D is negative, correcting the estimates of the density DM and/or the filling level TR and performing again the verification of the value obtained for the overload V on the front axle; F) if the result of the verification of step D is positive, validating the estimate of the maximum load on the bucket CG in the conditions of use on the worksite; G) using the value for the maximum load CG to calculate total loads ZAV and ZAR on the front axle and the rear axle, respectively; H) calculating the load on each front tire by dividing by two the total load ZAV on the front axle calculated in step G, and choosing a load value for each tire of the rear axle greater than the total load ZAR on the rear axle divided by two; I) determining the conditions of the terrain on the worksite and the average speed of use of the vehicle; J) making a search of data from tire manufacturers for the type or types of tires and characteristics of tires, including type, tread pattern and rubber compound quality, which most closely correspond to the loads calculated for the tires of the front axle and the rear axle, for the conditions of use of the vehicle on the worksite, including the conditions of the terrain, and the average speed of use; K) making a search of data from tire manufacturers for the operating pressures of the tires selected in step J on the front axle and rear axle respectively, corresponding to the loads calculated for the tires of the front axle and rear axle in step H; and L) choosing the operating pressures and the tires for said vehicle.