I have to say it-if you have bad wear patterns, nothing you do is obviously gonna regenerate the tread, and if you want to try and see what wear you get on your vehicle, don't be surprised if you have a failure prematurely. I just junked two tires on another vehicle because bad struts caused a weird wear pattern which looked like a tread separation, but it wasn't. I replaced the struts & tires and the vibration the worn tires were causing has vanished. Yes, it's sad you gotta shell-out $ for a new pair or set of 4 but like the old Bell Helmets ad, "how much is your head worth?" Buying used tires and expecting to get use out of them is, to me, like re-using a 'more-personal' item of protection. If you're dirt-poor and it lets you get to a job to buy new ones down the line, OK, maybe, but that's out of necessity. Keep the wheels, sell the used tires on CL or wherever, and buy new. I would never put my wife on the road on used tires.