Has anyone tried this size tire with the stock size rims (18' x 8.5 30mm et)? Any issues with interference, body or suspension?

1) 275/35/18 is too wide for an 8.5" rim.
2) Champion Racing uses the 275/3x/18 TOYO RA1 on a 18 x 9.5 inch rim.

But....I think the fenders might have to be rolled to get them to fit properly without rubbing.

I'm running 265/35/18's on 8.5" rims for a track set-up. The rims a barely wide enough IMO and the outer edge of the tire is very close to the fender lip.