275s?

Yes, a 9" wheel would be better.
I have Nitto 275/40/17 DR's on my stock wheels (17x8). Nitto's run smaller than most other tires though, so I don't think a BFG in that same size would fit.

For my Cobra R 18's I just ordered a set of BFG DR's 295/35/18. These are on the car most of the time on the street. :nice: