Originally Posted by prathmann

The clearances on the '85 520 look very similar to those on my '84 Specialized Sequoia which also has caliper sidepull brakes. I can fit 28mm tires with full fenders and can run at least 35 mm tires without fenders (or using fenders designed to go around the caliper brakes). 32mm tires with regular fenders would be very tight - it might work with some tire brands.