You mentioned "auto" rims. A caution on trailer rims, they generally have 0 offset. Means the metal web that bolt to the drum is in the middle of the rim.
Auto rims may have an offset and the bearing take more load offset and it may not fit in the wheel well.
Etrailer does sell trailer wheels. Do not know your size but see here
Wheel Only Tires and Wheels | etrailer.com
I bought 16" Dexstar trailer wheels from them and had good success. Others have bought aluminum wheels from Trident. I may have the spelling wrong. If you want aluminum, let us know will have to hunt the right name and where to buy.
You need to make sure the bolt circle and number of studs is correct for your wheel.
Hope this helps
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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