I currently use 4.10s and short tires 25 inch tall on the 360 I have run for years 4.30s or even 4.56s with 28 tall tires Helps keep the engine cleaned out after a lot of very short trips Lowest I have run now is 3.91s do you get passed on interstate Yes but the cops will not be bothering you at 60-65 mph. My one car is B-3 and it does stick out on the road