Taking Weasel's advice, this is what I came up with: I am going with a set of 20's on the front and 22's on the rear. My tire selection is as follows: fronts, Yokohama 275-45-20 (revs per miles 697) and rear Sumitomo 285-35-22 (rev per miles 693) which place me in the .04% safe threshold.

Hopefully, this week I will have it all together and will post some pictures.

Why different tires for front and rear? AWD cars are supposed to have same tire make(tread design) on all four. Keep life simple and have same wheel size on all four.

You make a very good point, but, I like the look. I also found this information on 4x4abc.com There are some AWD vehicles where it does not matter what you do. Replace one tire, replace 2 - it does not matter. Those AWD vehicles are true AWD, in the sense that they are full time 4WD or permanent 4WD powering all 4 wheels with about equal force. Most Subaru (except Impreza), BMW X5, Audi, some Toyota, Mercedes, etc. are in that group of true AWD. These AWD vehicles have a differential between the two permanently powered drive shafts. They are the ones that will survive a replacement tire that is slightly larger or slightly smaller (like when you have to buy a used (larger) tire in Mexico because nothing else is available).