My ZX3 has a manual trans. it has 50000 miles. A few days ago, I noticed a relatively soft, but annoying noise. When I am driving at 30-40 mph, just cruising under no load, I get this metallic rotational noise. Sounds to me like a wheel bearing. Ford replaced the front wheel bearings under ESP-noise is still there. I can't tell which side it it coming from, but seems to be from the front. Once I get going faster, I don't hear it so much due to road and wind noise. I don't think it makes any difference which gear I'm in, maybe it is louder in 4th than 5th. Maybe quieter when clutch is in, but I am really not sure about that. This is not a big thing, but my car was quiet before and I guess I am kind of anal about noises. Any one have any ideas?