Hi, I have first generation LS400 with 19inch rim, couple of week ago one of my tire blow (245-35-19) so I'm thinking of upgrading the size for the back. I have lower the car but i'm not too sure exactly how low it is but roughly around 1.5-1.75inch. I'm thinking of replacing 245-35-19 tire that I have in the back now to 275-30-19. And I will keep the front with 245-35-19. What do you guys think??? Anyone have it on their car??? Will the tire rub on the back??