Discovery S/T Maxx 255/85r16, and Concentric Dually Spacers

[79GLIDE]

Any news on your measurements Dieselcrawler? I sure appreciate your efforts to help me identify an option.

 

[DuRolf]

I had to use spacers on both sides of my inner wheel when I went up in tire size.
Old
Hercules Terra Trac AT ll 215/85 R16 E
Tread width 8.4 in
Overall diameter 30.31 in

New
Hercules Terra Trac AT ll 285/75 R16 E
Tread width 11.50
Dia 32.60 in

I used the Ford 8 x 6.5 dualie adaptors
http://www.wheeladapter.com/Ford_dually_wheel_spacers.php

My rig is converted to 4WD, and needed a 5" lift in the back just to level it after a Dana 60 went under the front. The new tires rubbed on the leaf spring U bolt assembly without inner spacers.

 

[FarmerFrank]

^^^ so your outer wheel is now 4" farther from the wheel bearings than it should be with a heavier/wider tire? Sounds like a recipe for a lost wheel or two.


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[chillman88]

^^^ so your outer wheel is now 4" farther from the wheel bearings than it should be with a heavier/wider tire? Sounds like a recipe for a lost wheel or two.


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He said 5" lift, not 5" spacers. Did I miss something?

 

[FarmerFrank]

He said 5" lift, not 5" spacers. Did I miss something?

He said spacers on the inside and out side of his dual wheels. 2" from hub to inside wheel, 2" from inside wheel to outside wheel. That be roughly 4" minus the inside rim width.

 

[chillman88]

He said spacers on the inside and out side of his dual wheels. 2" from hub to inside wheel, 2" from inside wheel to outside wheel. That be roughly 4" minus the inside rim width.

Oh... gotcha. I missed that.

 

[DuRolf]

Your point is well taken. It is indeed additional stress on the bearings. I do most of my driving on the highway, and nothing off road, and wanted larger diameter tires for a taller final drive ratio.