Front tire excessive wear

[Will N]

On the first set of 4 tires I had, I rotated them and burned through all 4 after only a few thousand miles. It's cheaper to replace 2 tires at a time than all 4.


I wonder if the trunk I have hanging off the rear, full of heavy spare parts and tools, is somehow throwing off the weight bias. This would take some weight off the front axle and shift it to the rear, and I would suspect that would cause the rears to wear faster. I'm perplexed.