Um planning on running a 35x12.50 tire and would like to keep the stock 15" steelys. If it matters the tire will prob be a bfg all terrain. Do I have to worry about the tire popping its bead more due to the larger sidewall?
No, the narrower rim will work to keep it from popping a bead. You will have to run lower air pressure on the road to get even tread wear when using that narrow of a wheel. You're also gonna have clearance issues between the tires and spring buckets, and tires and lower control arms when turning. Consider some wheel spacers.