Are you on 17" or 18" and what's the profile on the 245's? 245/35, 245/40, or 245/45 x 17 would probably work, 245/30 x 18 would be cutting it close, and 245/45 x 18 would likely rub like sand in your jockey shorts. As I indicated, if you compensate for the added diameter, width and offset with proper tire selection, you may get by. If you pick a wide, higher profile tire, it's going to rub. Ignoring effects of negative camber, there's about 1 1/4" of space to work with in the rear fender clearance, by going from 7" to 9" wheels you use up 1" and the offset change from 46 to 32 uses up the rest so the rim edge is right under the lip of the fender. If the tire shoulder sits outside the rim, you'll get rub, if you go with some stretch to pull the tire shoulder inside the rim edge you're probably OK.
Mine fit with 245's on 9.5" rim and had not been rolled.
Sounds like you got just enough stretch to clear. If you'd mounted those up on a 9" instead of the 9.5" you might have had some rub.Those boat anchors are 18's and It had 245-40's on the rear. They are stretched a bit. Car was on Tein SSP coil overs which are NLA, rode surprisingly wheel since the rims were about 24 lbs each.