ok soo,
i am running 255/85/16 maxxis bighorn on 16x7 +28 offset (i think) which is close to factory. I had been looking into getting 34s or 35s for play tyres but decided against it.
Now my tyres MEASURE 840mm OD which is 33.3, i also have a lift of 65mm in the front, i have almost no rubbing at all (with flares still on) BUT i believe you could only go a maximum of 860mm OD without major scrubbing even with removing the flares. Also i would avoid the wider tyres as it will make matters worse. Currently with my tyres just before full lock there is only a few mm to the mudflap, so removing it would give you another approx 10mm (hence the 860mm i believe). I also have a bigger lift in the front than most and i reckon it is too high for the front end, it rides like shit and has no travel. So taking that into account will also make matters worse. If you had a body lift it wouldnt be a problem.
So what im getting at is dont get fooled by the sizes 33",34", 35". You need to know the actual measured size. Some of them are hugely different.
giancarlo93 on here who has the '35s' which are 315/70/17 actually measure 850mm OD as i have previously asked him. I also used to have a set of 34" superswampers that measured 34". See the link
http://www.widetread.net.au/4x4_simex_1.html to the simex tyre sizes. The stated sizes are bigger than most other brands. Their 32x9.5x15 measures 33.4" or 849mm OD which is the same as giancarlo93.
So to sum it up, find your self a tyre that is about 860mm OD and i would try and go 10.5 wide if possible rather than 11.5 or 12.5