Aside from telling your back seat passengers to be a bit more careful when exiting your truck, there really isn't much of an issue with heat. As long as the tips are positioned correctly, you shouldn't be scorching your truck's side steps or paint. You will have to be careful with clearance for some aftermarket side steps (Namely N-Fab Wheel-to-Wheel Steps and similar systems), however, but most OEM side steps will clear without problems.