I too run wider rims, with the rears being 9.5" wide, wrapped in 295/30R19 Hankooks. In the front, I believe, the rims are 8" wide wrapped in 245/35R18 Hankooks.

Just as above, they fit perfectly. Also, with those sizes, the tires "pooch" out slightly, which gives a really meaty look. I'll have to look at my notes at home for the offset and spacers I use.

If you want an easy tool for figuring what will and won't fit, check out my wheel stuff spreadsheet in the SRT6 section's general documentation collection.

EDIT: Okay, I'm home and pulled my documentation. My wheels are as follows:

TSW Nogaro Silver 5x112 Bolt pattern (Discontinued now)

Front: 18x8.0 with a 32mm offset. No Spacer. 245/35R18 Hankook Ventus V12 evo K110
Rear: 19x9.5 with a 35mm offset. 10mm Spacer. 295/30R19 Hankook Ventus V12 evo K110

They "Pooch" the same as my Yokohama Advan tires of the same sizes. So the right side picture in my signature is the same fitment. Just no spacers in the back, that is why they look a bit pulled in. I added the spacers after that track event due to inner wheel well rubbing high up during extreme articulation of the suspension. I also DID have roll my rear fenders slightly after adding the spacers, but nothing dramatic.

Cheers!