[clarence]

If u cannot find directional arrows on the sidewalls, then the treads of all 4 tyres should face the same direction (i.e. asymmetric). The Primacy HP is I think not a symmetrical tyre, u better check with Michelin or BMWUK.
Having a 2nd look at the fotos, it seems the tyres are fitted correctly, cos both the outside & inside shoulders of the tyre treads of each tyre are different (outside shoulder have deep grooves, inside shoulder have shallow grooves between deep grooves), yet they're symmetrical on both the left & right of the car (i.e. on all 4 pics the deep grooves are on the outside whereas the shallow grooves are on the inside). Just to be sure, u should find the words "Outside" on the sidewalls of all 4 tyres.