This issue has been persisting ever since this Aftermarket Part was added to Forza in Motorsport 3. The Volk RE30 wheels are completely inaccurate and disproportionate.
As you can see, the spokes are supposed to be noticeably further apart

Furthermore, an accurate model of this wheel is already in the game, and has been in the series for almost a decade: the Donkervoort D8 GTO Stock wheels are precisely Volk RE30s
And as if it wasn’t enough, the Aftermarket Volk RE30 wheels in Forza Motorsport have multiple paint glitches!
- Standard Colours (Gloss) appear as otherwise unobtainable Metallic
- Semi-Gloss and Matte Colours appear as Semi-Gloss Glitter with a painted reflection on Brake Discs
- Iridescent Black is not black, but the default wheel colour (gold) with Iridescent glitter