Looked through threads a bit but didn't find a definitive answer ...I have a 76' Dart swinger that I have 255/60/15's on the back and was thinking I'd like to go 245/60/15 on the front...I have large bolt pattern disc's on the front and the wheel is 8" wide with 4.25" back spacing ....Anyone? If not whats the biggest you think i can do with that setup? thanks for anyone's input ...