^^^ Judging by the skid marks and worn tires it is likely that all four wheels started skidding, then just the front axle. The front tires are both shot where as I don’t see flat spots on the rears. The skid marks started out black as coal and then got just a slight shade lighter and carried on for a couple hundred feet or so. The driver said when she heard the screeching she backed off a touch on her brake application …. There was actually a 14 foot enclosed motorcycle trailer hooked up behind the fiver, which did not have power going to it’s brakes, so things could have been worse if it had decided to jackknife.