Finally got some DRs. Now just need to find some fronts that match.
Considered both the 305/30/20 (never in stock) and 305/35/20 (dia not compat with fronts for .... computer reasons).
Ultimately went with some 17x10 ForgeStars and 305/45/17 NT555R2.
Absolutely no regrets there. They look badass compared to the 20s. Love the meat in the back. Not going back to 20's in back... probably ever... although I still have the original 20's and now some RaceStar 20's for.... I dunno... double-backup? Anyone want to buy some wheels?
I wish I had a scale to measure the 305/30/20 NT05s on the RaceStars compared to the 305/45/17s on ForgeStars. By feel though... the 17" combo has to be 10 to 20 lbs lighter per wheel/tire. It's a VERY noticeable difference.
Traction-wise it's great, although I still can't do a WOT 1st gear launch on the street. No place to really do a proper burnout and launch around here. Without burnout and launch in 1st they start to hook a bit, but as soon the RPMs come up a little and boost kicks in, they break loose middle to top of 1st gear. So I think 2nd gear launches on the street are good to go, and I'm pretty confident I'll be able to do a WOT 1st gear launch on a prepped track w/ burnout.
Ignore the dirt, but here's some pics. I've got no reason not to get to the track now.