[35fordtn]

I have used both versions of the Amermac truer. One is for racing tires that cuts a straight line or can cut 2 degrees of camber into the tires. The model 711 is a exceptional machine for bias old car tires as it can cut the correct contour over the tire and the user can adjust the contour. They are pricey machines ($9,000) new but from time to time they pop up on Craigslist cheap. You wouldn’t believe how out of round some of the reproduction bias tires are when new. It truly would be hard to build one nearly as good as the real machine. They use a blade to cut rather than a grinder. Wish I still had one..... also if you do find one when doing bias tires be certain to heat them for 30 minutes prior.