When I ran 18x9 +45 I had a 245/35 tyre. It fitted easily and I should of gone a 255/35 instead. Hindsight.
A 265/35 with guard work will fit.
As pictured 2 pages back I now run a 10" +44 on a 275/35. Virtually no stretch, its almost a full tyre.
Unfortunately I've been hella-sick (sic!) and haven't had a chance to get my fitment sorted yet having not left the house for 4 days other than going to the doctors and chemist. Hopefully get around to it this week sometime.