Tire sprints/ heavy tire pulls for distance

Hey all, I have just began to experiment with doing sprints and moving as fast as I can with heavy tires.

I found my 120 pound tire in a junkyard and it is perfect because the inside is hollow so I can throw some bells in there and just start plowing tread. Here was the Tractor tire workout of the day:

6 sets of sprints/ heavy pulls for 60 yards
Set
1 just tire: back pedal-60yards
2 tire+16kg: foward for 60yards
3 tire+24kg: back pedal for 60yards
4 tire+32kg: foward for 60 yards
5 tire + 40kg: back pedal for 60 yards
6 tire +48kg: foward for 60yards

my legs feel jacked and being that it was on grass it ate up some mud and made it harder.

Great workout

God Bless- Aman