Your tire manufacturer will have a recommendation for how often you should rotate your tires. It’s usually somewhere around 5,000 to 8,000 miles.
Let’s move on to wheel balancing. That’s when there are heavy spots on the tire and wheel that cause it to wobble.
Balancing adds weights to the wheel to balance it out. Now, we are talking about very small weight differences. Variations in the tire and wheel manufacture can cause a slight imbalance. The valve stem, and now the tire pressure monitoring sensors in the tire, also play into the equation.
Even small differences can cause annoying vibrations at speed: the wheel is essentially bouncing a bit as it goes down the road. For example, at freeway speeds, an out of balance wheel can be slamming into the road 14 times a second. That’s annoying and can cause your tires to wear out more quickly.