No slack and the fastest I've gone was 70 maybe 75 and that was only once on the highway so not turning. Happens at any speed, although on average I've been at 35-50 mph. I can get a video next time I drive but like a normal car will straighten out when you let go of the steering wheel but the Mazda stays exactly where I put it. I know a dragging caliper will pull, although I wouldn't describe it as pulling, but maybe the worn pad is causing some variation of that.