what would be the necessary offset for the wheel?

[rx7922]

If one were to order a new rims outside of factory five, what offset would you need to get for the 18 inch rims?

[JohnK]

Wheel specs for the FFR Halibrand wheels are listed here (https://www.factoryfiveparts.com/15812-18-halibrand-style-replica-wheels/).

Technical Specifications:
Front Wheel Size (Diameter x width): 18"x 9"
Rear Wheel Size (Diameter x width): 18"x 11"
Front Wheel Backspace: 6.00" (24mm Offset)
Rear Wheel Backspace: 6.46" (12mm Offset)
Wheel Lug Pattern: Ford style 5 lug x 4.5" bolt circle

[rx7922]

Thank you so much

[rx7922]

18X10.5+23 for the rear.
18x9+24 for the front. Would those wheels work?

[RoadRacer]

FWIW, this guy is a very worthwhile addition to your toolkit when trying to figure this kind of thing out. It's such a risky business otherwise

Wheel Fitment Tool (https://www.speedwaymotors.com/Wheel-Fitment-Tool-for-Tire-Fit-Testing-Size-Measuring-Mockup,485869.html)