305/30/19 appears to be a tire sized used for Porsche. Found 23 tires in that size on Tire Rack, but this was just a quick glance. Uncertain whether a 30 series would experience a super harsh ride with the typical accompanying suspension mods (specifically heavy T bars in the 1.12 + sizes). It would be about a 26.2" tall tire. How tall of a tire can you get up front without hitting firewall braces (if you have them)?

Just some things to think about smile

EDIT: I'm no expert, just wanted to poke around and do some digging.

Last edited by Wildjones; 12/23/15 07:00 PM.