swapped the BFG KDW for some Nitto 555.
Here's the KDW2 in 245/45/17 and a Nitto 555 in a 255/45/17.
There's a lot more than 10mm of tire difference there.
The KDW has rounded shoulders, the Nitto are squarer.
You could probably fit a KDW 275 on an 8" wheel, without it looking too fat.