If I'm not mistaken, someone over at B6G put 35's on a stock Big Bend (using the stock wheels). The only issue (if just going for the look and not wheeling) was crash bars needed to be removed.
If you see
@Baus67 sneaking around here, he can attest that for a span of about 4-5 months I hounded him to tell me that 295's would fit stock BB. And eventually we saw people putting 35's on stock suspension. So the simple answer to your question, 35's will fit without lift. Just don't hit any big bumps, then again, Baus always told me that the Bronco wheel wells were designed with 35's in mind.
This weekend I'll be helping the brother in law install the zone 2" level lift on his Bronco, I'll let you know how the install goes. He has a set of 295's on order for his Big Bend.
2021 Broncos - BaseSquatch 4dr. Rapid Red V6 Soft Top
Big Bed 4dr. AMB V6 Soft Top Tow (BIL's)
Nitto tires SUCK! You've been warned.