In this video, I talk about the difference between tire ballast and rear ballast on compact tractors and explain why rear tire ballast wont help your front axle when lifting heavy payloads only true ballast behind the rear axle will.

Followup: see this nice video by @MessicksEquip that demonstrates this very nicely with weights and wheel scales:    • Followup: Relieving your front axle ...   it's a great confirmation of the math and physics we discussed here.