I just have the base 17 inch wheels, running 235/65R17 Yokohama YK580s, but I have learned to keep cold tire pressures at the lower end of the inflation rating (unless I'm loaded up for a trip & towing). I run 32 psi at all four corners and have been pleased with the near even wear on the tires. If I'm running heavy, I'll take the fronts to 34 psi and the rear to 38 psi.

My rear camber was sitting at -1.5 and -1.7 degrees left/right on the last inspection.

2002 X5 3.0 252,000 miles
2004 325i 113,000 miles