By Tobias Carroll On their own, BMW’s vehicles are known for their performance and their attention to detail. For a next-level experience, however, plenty have gone to Alpina, a company that has established a reputation for itself as a means to turn a luxury car into something truly special. The relationship between the two companies extends back to 1965, and it’s still yielding memorable cars — note InsideHook’s review of the 2022 BMW Alpina B8, for instance. That relationship just underwent a substantial change, however. As noted by Robb Report, BMW has gone from partnering with Alpina to fl…