Steer tires wear

[kryten]

For years, on 3 different trucks, I ran low pro 24.5. On the Pete 377 I usually had Firestone FS590 steer tires at 110 psi with a usual weight on the front end of between 5600 and 5700 kg. I would rotate maybe once and would consider myself lucky to get 180000 to 200000 km before the edge wear got too bad to run them out on the drives.

On the 2 Volvos, the first one a 670 and the present one a 780, I've had Michelin XZA3 up front with the pressure and weight the same as the Pete. Again I'd be lucky to get 200000km before ONE edge wore away. On my last set of XZA3 I kept the pressure at 110-115 but dropped the weight below 5500 kg and at 250000km, wear is even across the tire with the edges 1/32" below the center, with tread depth at 45-50%. These were rotated twice at 80000km intervals.