Big trucks have triple the number and size of tires.

Tires wear out faster if underinflated or if not swapped - rotated enough to even out the wear.

Major sources of ocean microplastics - Synthetic textiles (35 %), Tires(28 %), City Dust(24 %), Road Markings(7 %).

https://www.horiba.com/int/scientific/resources/science-in-action/where-do-microplastics-come-from/