Detail: Grinding noise (vibration) ONLY when steering right. Noise is speed dependant (not RPM). Noise continues if shifted into neutral (with vehicle is coasting) Most noticible at 30-40 mph on smooth asphalt. Can be felt both in the steering wheel and gas pedal. Dealer could find nothing, said "rotate the tires". Tire rotation made no change. Similar feeling to driving a knobby tire 4-wheeler. ONLY noticed when lightly steering to the right 2007 Toyota Rav4 20K miles, well maintained.
Solution: That sounds like a left front wheel bearing gone bad My friend.. turning right transfers weight to the left side and it probably has a roar similar to a turbo fan jet.. Try it and lemmie know.. thank you , Hi, a 6ya Mechanic can help you resolve that issue over the phone in a minute or two. Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck!