Hrm.. that doesn't tell me anything about the tires - but one thing I thought I wasn't able to do was have staggered wheels with the x-drive. Maybe they matched the rolling diameters up really well.

22's look small on a E70. I would personally stick to a 21" Wheel so a nice thick tire can be used.

I'm trying to avoid the big wheel/small rubber band tire look, like you mentioned, by going with a higher sidewall and thus more rubber.

Call them and find out
iForged Performance Wheels | The next generation in forging technology - Global Site

I have 22"x10" wheels and I use 295/30/22 tires on them. These are closest to my stock 255/55/18 in terms of radius, circumference, revs/mile and most importantly my speedometer reads the car's speed correctly without recalibration.
Check Tire Size Calculator - tire & wheel plus sizing to compare your stock tire size with what you are looking to buy and choose whatever is closest to your stock tires.

The ride with 22" will definitely be firmer than stock 'high-profile' tires, but if you want looks and performance, this is the way to go! If you want to retain the off-road capability, then do not put anything bigger than 18", 19"/20" might be a good mix of off-road + performance + looks.

I would also suggest keeping the stock wheels for winter usage. Low profile tires are better in summers, your stock 19" will do wonders in snow with winter tires on them.

Wow, thanks for that info. I completely forgot about the speedometer and what would happen if I went up in diameter too much!

I would not go up too much in overall tire diameter from stock. 285 40 22 is a big difference (31"). 285 35 22 (29.9"). Stock is 29".

I rode on 285 35 22s with Parada Spec X's before, and the ride is not bad. Spec X is a great tire.

The rolling diameter and other specs depend on tire size and wheel widths. 285/35/22 maybe be a good size if the wheels are 22x10.5. I personally get some staggered wheels if you want to go for the 22s just so that you can use a narrower tire on the front so not much is compromised. GL

Oh and another thing, different tire companys with the same sized tires have different specs. Choose a good tire and you wont be dissapointed. I have tried a couple of brands and lets just say you get what you pay for. Keeping that in mind, try to choose a stiffer sidewall and a wide tire.

The Beyern Mesh wheels I'm after are either 9.5 or 11 width. I'm thinking that if I go with the 9.5 hopefully they won't rub with 285/40/22 tires, and yes, I'm getting the Yokos which I've heard are good. I was going to do the same all around since I'm worried that going staggered will be bad for the x-drive. Also, even though it may affect my speedometer is there a way to calibrate the speedo? I read up on another thread that there's often a 4MPH or so error rate that BMWs read that they're going faster than they actually are. Here's the thread:
Speedometer Calibration - Page 2 - bimmerfest - BMW Forums