path1 wrote:
Both fronts... wearing flat as could be measured with tire wear gauge, fronts showing 14 mm worth of rubber.
Both rears...are wearing flat but only 8 mm worth of rubber.
Where did 6 mm of rubber go?
Get your truck a good 4 wheel alignment by shop that really knows their stuff.
If the rear axle is off even a little bit the truck will be 'dog-legging' the front wheel track will be either left or right of the rear wheel track. Since I the front wheels are going straight they wear normally, but the rears are scrubbing slightly and so wearing faster.