July 2025 - Here it is: I found an aftermarket, off the shelf 15X8 wheel that will work on an FJ40

[msapers]

Hey All, I'm posting this to help others who may need the information. I spent a ridiculous amount of time researching this here on Mud and I couldn't come up with a definitive answer/source besides either new, custom built or old, widened wheels for those of us wanting to run 12.5 inch wide tires on 15X8 wheels. So, here it is: Steel 15X8 6X5.5 2.50 Backspace Wheel Cost is $94.99 and they're in stock as of today. I really hope this helps someone. For me, finding off the shelf wheels in the size and backspacing that I want has easily been the most difficult and frustrating part of our build. Again, hope this helps. If not, then sorry for wasting your time.

Details for those who don't like links:

Brand:
U.S. Wheel
Manufacturer's Part Number:
78-5860R
Part Type:
Wheels
Product Line:
U.S. Wheel 78 Series Raw 8-Spoke Wheels
Summit Racing Part Number:
USW-78-5860R
Wheel Diameter:
15 in.
Wheel Width (in.):
8.00
Wheel Size:
15x8
Wheel Bolt Pattern (application):

• 6 x 139.70mm
• 6 x 5 1/2 in.

Wheel Material:
Steel
Designed for Dually Truck:
No
Manufacturers Wheel Series:
U.S. Wheel 78 Series 8-Spoke Wheels
Backspacing (in.):
2.50
Offset:
-51.00mm
Wheel Construction:
2-piece
TPMS Sensor Compatible:
Yes
Beadlock Type:
None
Lug Nut/Bolt Seat Style:
Conical seat - 60 degree
Hub Centric Ring Compatible:
No
Center Bore Diameter (in.):
4.28
Center Bore Diameter (mm):
108.71
Center Cap Included:
No
Load Rating (lbs.):
1,500 lbs.
Lug Nuts Included:
No
Small Diameter Lug Nuts Required:
No
Valve Stems Included:
No

 

[Augustiron]

Cool, looking forward to seeing these mounted up under a 40, hopefully with stock quarter panel openings.

 

[msapers]

Cool, looking forward to seeing these mounted up under a 40, hopefully with stock quarter panel openings.

You'll get to see them on mine before too long but my quarters are cut and flared.

 

[igotta40]

LOL 1981 called, they want their wagon wheels back…..

 

[msapers]

LOL 1981 called, they want their wagon wheels back…..

Ha! I just turned 50 last week. They look classic to me. Plus, they'll be black and you don't see them in black that often. But yeah, it's an old school look for sure.

 

[MOTOV8R]

My 40 had a set of these on it when I got it. Little closer to stock backspace.

https://www.jegs.com/i/JEGS/555/681114/10002/-1?gad_source=1&gad_campaignid=21316634780&gbraid=0AAAAAD6OBRGHru7YqT_JgIw5tYUt0sExt&gclid=Cj0KCQjwyvfDBhDYARIsAItzbZEzxhtpbrRKGwFf03lGgGxLPzm0-5_953Xj-G9b1zVNHxD8CKzKzD4aAnLjEALw_wcB

 

[mdsims]

My 40 had a set of these on it when I got it. Little closer to stock backspace.

https://www.jegs.com/i/JEGS/555/681114/10002/-1?gad_source=1&gad_campaignid=21316634780&gbraid=0AAAAAD6OBRGHru7YqT_JgIw5tYUt0sExt&gclid=Cj0KCQjwyvfDBhDYARIsAItzbZEzxhtpbrRKGwFf03lGgGxLPzm0-5_953Xj-G9b1zVNHxD8CKzKzD4aAnLjEALw_wcB

And better load rating.

 

[mdsims]

Hey All, I'm posting this to help others who may need the information. I spent a ridiculous amount of time researching this here on Mud and I couldn't come up with a definitive answer/source besides either new, custom built or old, widened wheels for those of us wanting to run 12.5 inch wide tires on 15X8 wheels. So, here it is: Steel 15X8 6X5.5 2.50 Backspace Wheel Cost is $94.99 and they're in stock as of today. I really hope this helps someone. For me, finding off the shelf wheels in the size and backspacing that I want has easily been the most difficult and frustrating part of our build. Again, hope this helps. If not, then sorry for wasting your time.

View attachment 3952998

Details for those who don't like links:

Brand:
U.S. Wheel
Manufacturer's Part Number:
78-5860R
Part Type:
Wheels
Product Line:
U.S. Wheel 78 Series Raw 8-Spoke Wheels
Summit Racing Part Number:
USW-78-5860R
Wheel Diameter:
15 in.
Wheel Width (in.):
8.00
Wheel Size:
15x8
Wheel Bolt Pattern (application):

• 6 x 139.70mm
• 6 x 5 1/2 in.

Wheel Material:
Steel
Designed for Dually Truck:
No
Manufacturers Wheel Series:
U.S. Wheel 78 Series 8-Spoke Wheels
Backspacing (in.):
2.50
Offset:
-51.00mm
Wheel Construction:
2-piece
TPMS Sensor Compatible:
Yes
Beadlock Type:
None
Lug Nut/Bolt Seat Style:
Conical seat - 60 degree
Hub Centric Ring Compatible:
No
Center Bore Diameter (in.):
4.28
Center Bore Diameter (mm):
108.71
Center Cap Included:
No
Load Rating (lbs.):
1,500 lbs.
Lug Nuts Included:
No
Small Diameter Lug Nuts Required:
No
Valve Stems Included:
No

I’m uneducated on it, but load rating seems awkwardly low. Particularly for the rears.

Edit: maybe they’re not that far off. Looks like a lot of wheels hover around the 1800# mark.

 

[msapers]

3000 pounds per axle will work for me.

 

[-MaTTi-]

Offset:
-51.00mm

Too much, makes track width 4” wider than OEM. Sticks 2” out/each side.

 

[cruisermatt]

Make sure you have a lot of positive caster. That backspace/width and weight of a 35” tire can be pretty reactive.