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Old 10-18-2012, 04:57 AM   #1
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Aluminum Wheel Upgrade

The time has come for New Tires on Our 98 DSDP so figured We would upgrade the Wheels at the same time.

Aluminum Front and Rear plus We will have New Inner Steel Rims on the Rear .

Does Anyone have any tips to prevent the Dissimilar Metals from corroding?

I was thinking a plastic film between the wheels but don't have any first hand experience.

The New rims are 8.25 X 22.5 replacing the OEM 7.5 X 22.5

Tires are 275/70 22.5
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Old 10-18-2012, 06:37 AM   #2
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Since keeping a steel rim on the inner dual seems to be standard practice, the wheel supplier (Alcoa?) should be able to address the dissimilar metal question.

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Originally Posted by RobRV View Post
The time has come for New Tires on Our 98 DSDP so figured We would upgrade the Wheels at the same time.

Aluminum Front and Rear plus We will have New Inner Steel Rims on the Rear .

Does Anyone have any tips to prevent the Dissimilar Metals from corroding?

I was thinking a plastic film between the wheels but don't have any first hand experience.

The New rims are 8.25 X 22.5 replacing the OEM 7.5 X 22.5

Tires are 275/70 22.5
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Old 10-19-2012, 01:18 PM   #3
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Mine came with aluminum and steel enter back wheels I thought that was standard practice.
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Old 10-19-2012, 06:59 PM   #4
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Go to a tire repair facility. there is a plastic disc you can buy to go over the stud,s,between the two rim,s Doug
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Old 10-25-2012, 06:07 PM   #5
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I did the same thing a couple years ago on our 2002 DSDP. I asked about putting the plastic ring in. They said it was not necessary.
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Old 02-24-2013, 02:45 PM   #6
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I used trash bags with a lot of trimming of course. Whom ever said it wasn't necessary has never seen the results of galvanic corrosion.
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Old 02-24-2013, 02:57 PM   #7
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This is where I got my new ones: 10 lugnut hole black plastic wheel rim protector - SINGLE
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Old 02-24-2013, 11:27 PM   #8
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Whom ever said it wasn't necessary has never seen the results of galvanic corrosion.
It's one of the large truck tire centers on the west coast, they have several outlets but it's not Les Schwab.
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Old 02-25-2013, 06:17 PM   #9
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Danger,, DANGER dANGER! Do NOT use this between the wheels. It is designed to protect the wheel from the wrench used to remove the lug nuts. It is too thick and keeps compressing even after the initial torgue setting. Using nothing is better than this.
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Old 02-25-2013, 06:49 PM   #10
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If Galvanic corrosion is an issue, how about between the front aluminum wheel & the steel hub, or steel lugs & nuts? Just wondering? Art.
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Old 02-26-2013, 04:51 AM   #11
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Quote:
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Danger,, DANGER dANGER! Do NOT use this between the wheels. It is designed to protect the wheel from the wrench used to remove the lug nuts. It is too thick and keeps compressing even after the initial torgue setting. Using nothing is better than this.
Easy, easy ,easy here : Wheel Protector Black Plastic 10 Hole for Alum Wheels | eBay

THIS BLACK PLASTIC PIECE IS USED TO KEEP ALUMINUM WHEELS FROM MAGNETIZING TOGETHER. IT IS THE 10 HOLE TYPE WITH 1 INCH DIAMETER HOLES.
My Coach came from the Spartan factory with these in between the back side of the aluminum outer rim and the front of the inner steel rim. I just bought new ones when I changed out the original tires while they were off.
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Old 02-26-2013, 07:08 AM   #12
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I have apx 65k on my aluminum wheels w/steel inners ...did not see anything between wheels when tires were replaced (Spartan chassis). I have driven all over US, but very rarely in ice/snow/winter crud. I have seen no noticeable corrsion of any kind on the Accuride aluminum wheels. I definitely would prefer aluminum to rusting steel and the troublesome tin can liners.
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Old 02-26-2013, 03:59 PM   #13
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Here is another place, in item description explained: Wheel Guard, 10 Hole, 11 1/4" B.C., Stud-Piloted, 3/4" Studs - Unique Truck Equipment

Unique Truck Equipment - Tire and Wheel Protectors
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Old 02-26-2013, 04:26 PM   #14
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Plastic spacer between dissimilar wheels.

I wouldn't use a plastic spacer between wheels. I agree the plastic spacer is for installation of the lug nuts to keep from damaging the aluminum wheel.
Now the steel inner wheel fits up aganest a cast iron brake drum that can get to 900 to 1500 degrees what will this do the plastic spacer? When it melts and is spun out of the space it took up between the wheels you now have no spacer and loose wheels. Think about it. I have seen this first hand and have measured the temps of brake drums on Donner pass. I worked several years on Commercial truck brake fires.
No spacers on my motorcoach.
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