Hey guys just picked up a B9 Sportback in glaicer white. I'm looking to go more of an oem+ route with wheels and tires. I'm really liking the Vorsteiner VFF 107's in carbon graphite. My question would be in the 19x9.5 size what would be the max et for concavity? I only plan on lowering it with H&R and probably running either a 255/35/19 or 265/35/19. I don't want to go 20's because I would think having only to go down in tire profile would make the ride a bit more harsh. Any input would be great?