I took my Tracer 3150BHD into NTB and had them spin balance all four tires. Who knows if it will make a difference, its a least a check box in the peace of mind category.
When I took it in, it was a Monday and mid morning so there was little to customer traffic and they got me in right away. The Manager came out and was initially stumped, but they had me back into the garage entrance so they could use the power tools, they brought out a large jack and knocked it all out in less than 40 min. It was pretty cool!
Link: Spin Balance NTB March 2012 pictures by joey67usmc - Photobucket
2003 Maxima GLE
2010 370z Convertible 6 Stick
2011 Expedition 5.4L 4x4 Limited
2012 Tracer 3150BHD Touring Edition