7.5" x 31.25" 14" Wheelbase 7.75" x 31.25" 13.9" Wheelbase 8.0" x 31.6" 14" Wheelbase 8.1" x 31.7" 14.38" Wheelbase 8.25" x 31.5" 14" Wheelbase 8.375" x 32.1" 14.38" Wheelbase 8.5" x 32" 14.5" Wheelbase 8.6" x 32.6" 14.5" Wheelbase 8.75" x 32.5" 14.75" Wheelbase 9.0" x 32.5" 14.25" Wheelbase