Hi! I'm looking to plus size the wheels on my '65 and have seen some 20" foose wheels that look killer. My question: what is the proper backspacing and offset to fit 20x8 or 20x8 1\2 wheels on stock suspension? I understand its a 5x5 (5x127) bolt pattern.

 

Backspacing and offset are related for a given wheel width, so you only need one. Of course, what really matters is the outside diameter and section width of the TIRE, not the wheel. For starters, offset should be near zero. That's about a 4" - 4.5" backspacing on an 8" - 8.5" wheel.

 

Gotcha. That's what i needed to know. Thanks