Tires

Subaru's have very limited wheel well clearance so I would not go any bigger the stock tire diameter. You can use an online tire calculator to pick the right tire size.

F_O_R's correct in that the tire diameter is already pretty tall for the wheelbase of the modern OB. To improve handling a bit Subie specs 18" wheels for the Limited, but even with 60 series tires on 18's the body roll, dive and yaw are borderline-sloppy, so I don't think going to 55 series tires on 19's will do anything except drain your wallet. It's kinda sad....

From what I have seen the Outback seems to be aimed at the over 50 crowd that wants a cushy car. In my area new Outbacks are pretty much all owned by the geriatric set (no I don't think 50 is old). ;)

Well, having raced quite a bit with various cars I would say the 16 outback actually isn't too bad - for what it is. No, not great, but better than many. Unfortunately when looking at the tire clearance to the hub you really have to be careful if considering, say a 50 series tire. I wouldn't do it. Besides, the little engine can't really help you that much anyway. (Hoping for a turbo in 19). I actually like the car for what it is. Especially considering the safety features and - Pricing!

No no...a 50 series is a bit TOO low for the 2015+ OB...but a 225/55-60-17 or 225/55-60-18 will fit nicely. If your '16 OB has 225/65R17 I don't know how you can stand it! Drop to 55- 60 aspect and mount that 20mm rear STi swaybar and you won't believe the difference.

Method mr502's on 245/65 17 BFG LongTrail TA Touring tires did not rub on my 2015 Premium Outback, however I just traded for a 2018 3.6r Touring and these Tire rub when backing up and turning along the interior of the front mud guard. Regular driving has been fine. I also second the upgrade to the 20mm Rear sway bar, it make a noticeable difference.

The 3.6 Touring should have 18" wheels (7.5"). Do you mean that your 245R17 rub on the suspension? As well, 245/65 is really big, spongy, junk just for offroad. If you felt the wonderful improvement from the rear 20mm bar then you should just improve further by sticking with 225/60R18 that should've been on your 18. Even better handling are 225/55R18, but at the expense of up to 1/2" ground clearance. So it depends upon your app.

Not rubbing suspension. Method mr502’s are 17’x8’ and my primary app is pavement.

Also, keep psi at 40

Methods mr502 On the 2015 Premium

I'd go 36F/33R psi

If you go off road at all or have lots of potholes you should not go lower than 60 series tires.

245/70/17 Can be used in 2011 outback？

No! 225/70 may fit, but destroy handling. 245 will rub or not mount.