- The things worth doing when the truck is brand new (tonneau for example)
- The things to wait until warranty is out (removing secondary air filter, for example)
- The things to do when a wear part needs replacing (upgraded tires, for example)
Obviously, some people's driving habits and risk aversion may change what category a mod might fit in. Somebody who off-road's every weekend will probably want better tires even before the stock ones wear. Someone who's confident in pushing for warranty work might not wait to remove the secondary air filter.
I know this isn't a shy crowd, so chime in. When have you done what mods, why at that point, and how did your driving/risk habits affect the choice?