I thought the 1998 American Eagle was on a Spartan chassis. Still might work, though.
Do you know the rim width, e.g. 7.5", 8.25", etc. The width of the rim is one of the factors dictating what tires can be installed on it. If both coaches use the same size tires, they probably have the same wheel width, but if not... And 10 bolt wheels are not always the same - the diameter of the bolt/lug circle can differ as well. So you need to take some measurements.
You also need to know if both coaches use the same wheel type (hub pilot, ball seat, etc).
Here's an Alcoa application guide that might help.
http://www.alcoa.com/alcoawheels/cat...uide8_5x11.pdf
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Gary Brinck
2004 American Tradition; 2007 GMC Acadia
Homebase in the Ocala Nat'l Forest near Ocala, FL