I have Cooper CS5s(USA)on the wife's dd and Discovers on my truck(USA) Had many sets of Coopers in the past,zero issues with any of them. Had a set of BFGs on my B'cuda since mid 90s(245 and 225/60) Replaced them last year with another set(255 and 225/60R 15) Likely made in MX(I didn't check) but they mounted and balanced fine using a Hunter Road Force machine and the car drives excellent.

15s are tough...low demand.

My thoughts? Buy the Cooper or BFG...mount them blackwall(easy for me as I'm not a white letter fan) balance them on a good machine(Hunter) and enjoy! Good luck!