They overlap heavily: both forged, both 18×9 in +33 and +20, both offering the same street and all-terrain tire menus. The UP-05 is the Selipanov Y-spoke with signature engraving; the 18-inch UP-03 package is a different spoke design at a similar strength. This is a looks call. Choose the spoke pattern you’d rather see, since the capability is effectively the same.
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