Hi, What is the difference between B F Goodrich tires that are listed as B F Goodrich Silvertown (with no mention of 660 or 770 on the side wall) and those listed as B F Goodrich Silvertown 660 or 770 as the Judging manual has listed ? All tires are 775 X 15 bias tires.
Thanks for your time and response,
dm
Thanks for your time and response,
dm