Tire Question.

ok the wheel blocks have nothing to do with it. if it was both outsides maybe he was turn hard alot and eating them some but that would not cause the issue your son has. check pins in front, check center pins on drives. take truck to different shop and have alignment checked to many shops make quick money on big truck allignments. they dont do them right

 

reason i mentioned spring spacers is because thats how my front tires were showing wear just oppisite, right inside and left outside. spring spacer on right side afull 3/4" taller than left. came from factory that way, i guess to componsate for torque twist. 76,000 miles on original tires and had alignment done that took care of un even wear but feels like theres more drag to move. wished i just took tall spacer out and had both the same.