Shade

Thinking of putting larger tires on, and lifting 2001 Silverado Z71 Extended 2", or so. Bought it new, and put 16" x8" American Racing wheels on it, from the beginning. I am having those powder coated. Have had 265/75R16 on it for about last 12 years. The first 7-8 years, I ran a larger tire than I have now, but cannot remember the size. (275-285 ?) They looked great, but at times, had some slight rubbing issues when turning sharp. Since running the present 265/75, I have intermittently cranked the torsion bars up over the years and they are maxed out now, with front maybe very slightly lower than rear. I did purchase some new keys a year or so ago, but have not installed them yet. Would not mind if front is slightly higher than rear, after all is said and done. I am 71 years old, and still like the old school look of jacked front. : ) (Brother and I owned/raced a '63 409 back in the day...…"remember those thrilling days of yesteryear" !) Any ideas of the largest tire size that will work ? I naturally want to mount the new tires on the reconditioned wheels......just once. Certainly appreciate any help. Thanks Much