Backspacing on the inside, at the RC UCA's or for someone that is running CST spindles, (probably even with stock suspension with any A/T, with any kind of width, and you'd need a little width for a 9.5" rim), but their width will likely cause rubbing at the pinch weld too ... especially with wheel adapters or a stock backspacing or less.
For example a common sizes in 9" rims, that comes in two offsets -12mm (4.5" backspacing) and +18 mm (5.71" backspacing), will both cause more pinch weld rubbing for a given tire than the stock 8" width with +25 mm offset, (5.5" backspacing). The -12 mm's outside edge sicks out 2" more than the stock rim, and often will rub even on bracket lifts with 35's or 33's on leveled Titans.
The +18 mm is much better as far as the pinch weld rubbing, but still sticks out 3/4" more than stock, so for a given tire is more likely to rub when turning, and it sticks in an extra 1/4" so is more likely to rub on the inside things like RC UCA's and aftermarket spindles, than stock rims. But with a narrower tire like a 285 or 295, the +18mm might be o.k. on the inside, but for fitting a 325 probably not.
An 8" or 8.5" with 5" to 5.25" Will give more clearance than the 9's that I mentioned, plus a little more inside clearance than stock rims, but with more likelihood of pinch weld rubbing than stock.
For instance my 8's have 4.5" backspacing so stick out the same as an 8.5" with 5" backspacing, and with 34's, and 1/2" taller than normal leveling kit for my year/model, I had to lose the mudguards, trim the metal behind where they were, and at the pinch weld. That's only sticking out 1 inch more than stock 18's.
