Biggest tire on 1969 dart

-- You should be able to fit a 275/60/15 with the offset spring kit. The key is measuring carefully. You may have to order custom offset wheels as well. --
-- I had 15 X 8 Mopar wheels with altered B S, off-set spring kit, and 275/60-15 tires, on a 68 Dart. -- I do not remember the B S. -- Measure carefully, get a pair of wheels modified, and they will fit. -- Oops !! This is a repeat - see post # 16.