The simple answer to this simple question is yes. More info is needed for a better answer. I'm no expert (I still have my stock wheels and tires ATM) but I have done a whole lot of research on this exact subject recently and I did work for a major tire manufacturer in an earlier reality.
That's great to know. By the way, how much have you lost in terms of mileage on gas?Try https://tiresize.com/calculator/ to start. Enter your OEM size and it will suggest alternative sizes. Tire Rack is a good resource for specs on actual tires you are considering. Search this site by entering 235 in the search box and you will find a ton of info related to this width on the Crosstrek.
Like I recently posted on my members journal I just put 235/75R15 KO2s on my Crosstrek. The rubbing was easily resolved and without a stopwatch I can't tell any difference in acceleration. If anything the extra traction makes it seem safer pulling out into traffic quickly while turning. I know its going to cost some fuel economy but 2 or 3 days in it feels totally worth it.
But how much rub is there? and is it possible to modify it enough not to worry. plus what happens if u need to air down? that k youIt will be more than another week before I find out for certain if and how much rub on my 2019. I already have the 235/75/15 tires, wheels are scheduled for next Monday delivery and lift kit install for the following Monday the 16th of Dec. I've gone back and forth between the 215 and 235. Looked at posts here and elsewhere, youtube videos etc. Agonized over it to the point I though about selling the 235's and buying 215's which almost certainly won't rub. However I can't get over the fact that the 235 KO2 LOOKS so much better than anything else and I can't seem to get over that. AAARGH! What to do LOL? ?