Thumping noise in sync with tire rotation?

Over the past 4 months, I've replaced the struts/shocks, control arms, ball joints, tie rod ends, CV axles, I just finished my rack and pinion 3 days ago. New tires. Everything. I took it off the lift at school today and when I was backing out of the shop, I heard a loud pop come from the front. Over the span of 88 miles, it went from unnoticeable to a steady thumping noise. When I turn left or right it seems to stop. But it gets louder as I accelerate. With all brands new parts all I can think of is I didn't tighten something sufficiently. Any advice?