well if a caliper sticks closed a little or a brake hose is bad (which can cause a caliper to stick) it can pull one way . . but usually but not always it will pull the other way when ya hit the brakes .. . ya might drive it for a few miles . . get out and carefully touch the wheels . . . if one is hot and the other isn't then it is probably a brake sticking. . . if both are cold then no worries . . . dont touch the rotors . . .they are a little warm lol