You're missing the point. M-Speed's replica wheels are sold with stickers that clearly state their position. Like many aftermarket parts sold in nations with thyperactive legal professions (USA for example...) Japanese parts manufacturers are often obligated to state get-outs like 'For Off Road Use Only', 'For Race Use Only', 'Not For Use On The Public Road' etc etc. This enables them to sell parts that would otherwise need to go through rigorous and expensive testing and certification processes.
This is perfectly normal. If you bought Nissan's official 'Sports/Race Option' parts for the S30-series Z back in 1970, you'd see this sticker on the boxes, and usually on the parts themselves:
View attachment 38922
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It's an indemnity sticker. Use them on the road and Nissan are not responsible for anything a where's there's blame there's a claim type lawyer might want to pin on them.
Buy your wheels out of the back door of a Chinese factory, and - lo and behold - no stickers and lots of unanswered questions.
Thank you - it makes sense now. I had totally missed the point [emoji106]