275's to big?

I wouldn't be runnin a 275/50 on a 7 inch rim..that's a 10 inch tread tire. That's quite a bit of bulge
I think BFG calls for a range of 8-10" on the rim width. They do bulge a bit but I have them on an extra set of 10 holes for playing around, they seem to work pretty good in a straight line. I run Yokahama AVS 225/60/15's normally.