Hey,
Thanks for the compliments.
To answer you questions - The wheels are 20" American Racing Villans, when I bought the truck it had 16" stock wheels. The tires are Yokohoma Prada Spec X. Size- 255/45/20. No rubbing, run quiet, and have great traction even in the slight snow/slush, and water.
As far as the suspension goes, I made it about 4 months..... I could not handle the ride, it was ridiculous, my gf actually got sick a couple times because it was so terrible. I am only 23 years old and it was just too much.... The downside to having the lower springs on it besides the ride, was my shocks got absolutely wrecked. I bought Bilstein shocks(AMAZING) and put the stock springs back on. The ride is night and day. I will suggest to anybody that lowers their truck to read this post and do the research on it. I didn't think it would be near as bad as it was, and it was actually 1000X worse than I can even describe.