Dave, I am in the same boat as you. I want a nice wide beefy looking tire. I'm running 275/60/15 on the back of my sig car and they do not have that wide look at all on this large of a car, especially with the lifted rear end my car has. 295/50's would be a small amount wider but also shorter. The size I found would look good would be 325/50/15. Nobody makes it in a street radial, you'd have to step up to a drag radial at the minimum. I think the most streetable tires would be the BFG G-Force Drag Radials in that size or the Nitto DR's in that size. But both are going to have less tread and wear away faster than a rock hard street radial. Then after that your choices really are tires like M/T, Hoosier, with even less street tread. Good tires for dry traction, not so sure about driving in the rain with them...