Whoa...
As a new Forester owner and participant in these forums, I am really impressed by both the quality and quantity of responses. In the short time that I have read through the various threads that pertain to questions or issues that I have been having, I'm already starting to realize that I completely underestimated the Subaru customer base, a lot of smart folk.
That being said, I'm a black and white kind of guy. That is, for certain questions, like what my tire pressures should be, there shouldn't be a fuzzy gray area, or anything more than rudimentary scientific analysis required to figure out what my tire pressures should be. SO much information in this thread but I am utterly confused and overwhelmed. So let me take a step back...
I've owned vehicles and personally maintained tire pressures on a regular basis on them for 25 years give or take. I've always used various information and resources to arrive at the optimal tire pressures for all of those vehicles, but in the end, there WAS a figure. ONE figure. I never had differing tire pressures for front or rear tires. And I never adjusted tire pressures differently for hot or cold weather, and I live in the Northeast where the temperature has been and continues to be anything but consistent. Even with the "err in my ways", knock on wood, I've never had a flat, blowout, inconsistent or early advanced tire wear, load balancing or weather related issues, etc. I've even maintained tire pressures for a boat trailer with spare for the past 15 years, again, without issue, knock on wood

So while I know very little about the science behind what the optimal pressure for a given tire should be at any given time of the year, I know how to read a door jamb, I know that various built-in and external gauges and air pumps can often be inconsistent, and I know how to talk to a variety of people and resources to get a good idea as to what the tire pressure (not pressures) should be on all four tires and/or a spare for any given vehicle.
So here is my plan for my new Forester:
1.) Order a pair of the same decent quality, reasonably priced manual dial gauges (I think I paid $20 x 2 for an AccuGage model with solid reviews on Amazon, should be here on Wednesday).
2.) Check the driver's side door jamb for the official Subaru notification on what the tire pressures should be -- 30 front, 29 back, 60 spare - yeah, that's not going to be happening

3.) Call the service department of the dealer where I purchased the Forester tomorrow and ask them point blank a.) what the tire pressures all around SHOULD be, b.) what the tire pressures are that they typical put into demo and/or sold cars that get operated throughout the dealership (if different), c.) what the mins/max the Yokohamas can handle, and d.) how on earth am I supposed to access the spare and check its pressure, how often am I supposed to do that, and is it really 60 PSI?
4.) Call my local mechanic for his experiences and recommendations on the Yokohama Geolanders that came stock with the Forester
5.) On Wednesday or whenever the tire gauges arrive, take back to back cold measurements all around, including the spare if I can figure out how to access it, because right now everything feels perfect.
6.) Take the Forester around the corner to my favorite free automatic air machine, which is less than a mile away, and the gauge on which is general off by 1 PSI +/-, then adjust all the tires up/down to some figure along the lines of the various recommendations in this thread. My initial thoughts are to go with 34 front, 34 rear, all year round, but that really depends on what the readings are before I start tinkering, and how the tires feel afterwards.
Sometimes it is best to keep things simple. I'm not building the Space Shuttle here. I just need the "correct" tire pressure for my new car, how hard can that be?