I am pretty lame when it comes to having knowledge about alignments. Does the 98 Ram 4x4 require a 4 wheel alignment? I can never tell when it needs one if it needs one, so far the truck drives straight and no tire wear.

Also, what usually causes alignments to go? I hit a curb yesterday, parking out in BFE where I always park the truck to avoid dings, and good ol'moi hit a curb with the back tire at an angle of sorts as I was just pulling out of my spot. Would that mess up an alignment?

I have some really nice Michelins on the wheels and don't want to take any chances of ruining the tires from hitting the curb. Beyond looking really stupid to the other drivers and the sunglasses falling from the overhead, nothing else happened after the bump.

Any info would be appreciated,

tire challenged person

 

It'd be VERY difficult to knock the rear out of alignment due to the fact that the rear axle is a solid axle.
If you hit the curb hard enough, you could have bent the rim. You'd have to hit the curb pretty hard though, like sliding into it sideways at a good clip. You'd be able to check for a bent rim by having the tire/wheel balanced or just have someone follow you to see if there is a noticable 'Wobble' while driving.
Pretty much anything today should be 4-Wheel aligned, as opposed to a centerline alignment. There won't, however, be any adjustments on the rear of your truck.