If the fronts lock up and the rears are not, then there is still a problem. If the tires r that bad, then the rear would lock up just as easy. I still say they need adjusted. Tires will contribute, but r not the only factor. Remember, panic stop, weight goes forward, back end gets light. The rear will lock up, too. Even with drum brakes. Fix the problem, don't just band-aid it. And there are plenty of better tires out there than the BFG Radial T/A. It was great 15 years ago, but hasn't kept up with the benefits of technology. G-Force Sports are pretty good along with a bunch of others. All depends on what, when, where, and how u drive.