One way to check if the wheel bearing is the issue is by putting load on the suspected side. For instance, if one suspects that the left wheel bearing is going bad, then driving the car in a right roundabout fashion causes the left wheel bearing to be placed under load. Roll down the windows and listen for any howling/grinding/turbine-like sounds coming from the wheel bearing under load. If no sounds, then I don't think its a wheel bearing issue......
08 G8 GT, Hot White, Onxy/Red Interior, Prem. Pkg., Sunroof, 19" TSW Nurburgring + Michelin Pilot Sport A/S 3
Suspension: BMR (F/R Sway Bars & End Links, Trailing Arms, Toe Rods, Subframe Bushings, Strut Mounts), SuperPro Radius Rod + LCA, ProForged Tie Rods (Inner/Outer), GXP Struts/Shocks
Brakes: CTS-V Brembos + Hawk HPS Pads, Russell SS Lines
Engine: Roto-Fab CAI, Solo Mach Balanced Catback