sidewall bulge measurement ?

Boy, youre not kidding, about a tight fit. I set my wheels in the Bcuda oem tubs, measured, subtracted 1/4 inch per side( thought it would be wiser to be too narrow, than too wide), and ordered my housing narrowed. Its a good thing I did that cause I needed every bit of those 2 quarters. I still had to trim the lips a bit, and pounded the living daylights of out of the inner odd-shaped oem tubs in key areas. And I had to move the entire rear end back some 5/8 inch,and trim some sheet metal out at the front lower corner of the wheel opening.The big BFG-DRs finally fit, at near stock ride height, but just barely. And I cant fly around tight corners quite as fast as with the 295s, without a bit of non- damaging rubbing going on back there. But then, thats not what I fit those hummers in there for, now was it.
FWIW, I wasnt able to make those BFG-DRs hook very well.Although I freely admit to not having a suspension set-up for launching. I think I mustered a 1.9 60ft one time with 4.89s . I had to come out pretty soft.Mostly (on our crappy track), they just spun, and spun, and spun...Guys were coming over and giving me all kinds of advice. Even the officials at the starting line were telling me to do this and that. I actually thought my CenterForce had bit it on the first couple of runs, cause the tach stuck on 7000 rpm pretty much the entire 1/8th, through 4 gear-ratios.(I was running the 833O/D and GearVendors) One of the starting line officials cleared that up for me though on the next run, when he came over and told me those tires were hazing all the way down, and that I should lower my tire pressures again.At that point, I had decided that the track was junk,and gave up. Besides, the thing I wanted to know, I had already learned; 93Mph! I went and sat in the bleachers. My son was there. We had a good time, then drove home. 4.89s with double O/D is 2.70 equivalent.Hah