Echoing whats been have said, its not wise to mix different tires, certainly not rfts with non rfts. Theyll ride quite differently, break lose differently, and channel water away differently. Id be very modest in how i drove until the tires are matched.
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP
F30 N55 XDrive EBII