928drvr86.5

Good luck finding 315/25/19s or 305/25/19s neither size is common, i went thru this last year when i put 19" inch wheels on my car. Beware the online tire retail companies, they will let you purchase them "special order". Then if you're lucky enough to receive a call from them, they will tell you, "yeah, those tires you ordered, they're on an indefinite back order."

Silberwolfen

I scrapped that idea quickly...I found the same thing to be true. What I am doing is getting a new set of rubber with close sizes for the AWD system (meaning within .1 to .3 inches) and calling it a day. I have been comparing ratios and diameters and found a very close match in the 19s. I've spoken with a couple race shops this AM and they said it would be just fine...the closer the better. Yes the 19s will ride stiffer, and I'm ok with that. I'll probably have to go with a 40 profile in the front to bring the car back up to 19 spec (26.1 in front and 26 in rear). That is within tolerance---no issues. Just a more jarring ride on rough roads. I am aware of the issue with 18s versus 19s now and it is duly noted---it's not that big of a deal to me, so I am going to chill a bit on all of the suspension stuff.

SSST

Sounds like a good plan.