i got 235/60/15's on the front of my 79Z , they've been on there for a while (2 years) and they have never rubbed, so i know they work with the proper backspacing

 

i dunno... considering i have 16"ers and well hell i dunno... i did have an engine swap from a v6 to a v8 and re-did the front end... so maybe thats it... but tomorrow when i get my FREE tires on muwhahaha we will see.... jeez i hope they work.