I have a 2008 Impala LTZ with 18" Goodyear Eagle RS-A Tires (Factory). I have just noticed after only having 1300 km on it, that only when I turn right it makes a strange noise. Almost sounds like an intermittent, evenly spaced low "whomp, whomp, whomp" sound. I never noticed it until now. There are too few km on the car to be a tire issue already is it? Any ideas?