+1 ^^^ it is not uncommon for one tire to be different than the other three it came with at the time of purchase. This happens sometimes, more often with cheaper tires. Repeat; Mfg, process control, and quality control.
Dackel - I totally forgot to mention that BMW did swap left and right tires, and noticed the pull changed to the right side instead of the left. Thatís why they said itís most likely the left front tire. Now of course it could be (and would suck) the front right tire instead...