Just bought a set of Rays 19's and want info on which tires to buy. Will probably stay factory size 225/40 front and 245/40 rears. Any advice would be welcome.

theres many good tires out there.. falken 452, toyo t1rs.. just to name a few. you should go with 245/35; 255/40 it looks much better than the size you posted.

I was considering that exact setup as I really like the performance of the Goodyear F1 GS-D3 and factory sizes are not there

Man go with Vredesteins. They are the best tires I've ever had and I've owned everything. Look for my review here in wheels and tires.

Get the 255 in the back, I wish I did!

Also I have no complaints on my toyo's