Yes I have the same issue. I believe I read on hear its common with the stock Bridgestone's when they are cold and feels a bump or pop when turning.
__________________
|2013 Audi S4|Ibis White/Black|S-Tronic P+|
|2013 370z|PearlWhite/Persimmon|Touring/Sport/Nav|F.I. CBE 18" CF|
|Sold|2011 370z|Gun Metallic|Touring/Sport/Nav|
|