Coker Classic Wide Whitewall Bias Ply Tire 670-15 ( 4.5'' x 27.25'' - 15'' ) 2-3/4'' Whitewall Width''B'' Tire Design The classic looks of a wide whitewall will never grow old, and these Coker Classic 670-15 tires will put the finishing touch on your classic restoration, hot rod or custom. The bias ply design features an authentic tread pattern, and the 2-3/4-inch whitewalls are just right for the 1950's look.Tire Tread Width: 4.50''Tire Section Width: 6.70''Tire Overall Diameter:27.25''Wheel.