Rarely do they use aluminum wheels on the spare. Just another way to cut unecessary costs. The white wheel you found is more than likely the same white spoke wheels you would gotten had the dealer not ordered the rig with aluminum wheels.
Personally I'd prefer the white spoke wheels as they cost less, are not high maintenance and rarely crack or leak. Granted they are not as pretty as the aluminum but I don't need pretty wheels I just need functional wheels.
Glenn
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