Dually inside wheels on '05 - '07 trucks

[jerseyredneck1]

When I bought my $50,000 2007 F-350 King Ranch I was disappointed to find that both my inside dual wheels were STEEL and not aluminum like the outside or front wheels. I called the Ford dealer only to have them tell me that this was in fact how Ford designed this and not a mistake. They tried to tell me that this was because of "load carrying reasons" and not some bean-counter trying to save a few bucks. C'mon!!
Has anyone put aluminum wheels on their inside duals when changing tires and if so which wheels did they use to get the correct spacing? This has bugged me since I bought this truck and since this is such a cool truck I would like to have SIX aluminum wheels instead of four. That is unless somebody can come up with a good reason why I should leave my steel wheels on when I change tires.
Any help would be appreciated.

[kinghawg98]

can you really see them?

[StarDriver]

1, You would use another aluminum wheel that is the same as the outside, the offsets are the same.

2. The aluminum wheel is thicker, so make sure there is plenty of lug there,(which there should be.), so it will widen the track a 1/2 inch or so total.

3. It will make it a few pounds lighter.

[jerseyredneck1]

They are hard to see when looking at the truck sideways. I think this is another reason why Ford used steel wheels on the inside. I just felt it was a cheesy move for a top of the line fancy truck like a King Ranch.

[Logan]

Steel is tougher than aluminum.

[BudDog]

It wouldnt do any good to have alum. back there they would be so dirty you would still have to rotate the tires on the rims to keep the good ones out.

[txav8r]

They will fit. I did this on my '02 dually just because I found 2 wheels cheap. the gap between the wheels will be a little wider as well as the wheel base. The only advantage I could see was during tire rotations you didn't have to break down the tires to put the inner rears on the front. hope this helps

[dbkerley]

Steel bends and aluminum cracks or breaks. I just replaced all four of my cracked aluminum rims and the original steel ones were still fine and ran true. The aluminum is for looks and the steel is for the work. I think of it as a safety factor.

I may be wrong and I'm sure there are others here that would disagree. Just my .02.

[zspear1]

I know on big trucks they will put steel on the insides and claim it helps for carrying heavy loads especially if you see rough roads alot.

[pipelayerjdh]

Alcoa does not recommend running two aluminum wheels on the OBS. It may be different for a SD, but I have always heard it's a bad idea.