[ck25]

I have an 04 corolloa as well w/ 144k on the clock, gone through a couple tires and brakes.

you state earlier in your post it happens when you brake and then later you say "happening on a trip it will continue to happen when ever we get to the 45-55mph range."

so is it only when you brake or when cruiseing?..

I have had the rear bearings go on my vehicle, but it was more recent, you may not have as many miles on yours? If you are over 100k it could be a possibility. However when bearings go they typically howl or moan while in drive, under slow speed less then 10mph you may not notice any noise. Another way to tell if it is a bearing is to put the car in N and spin the tire by hand, if it is a bad bearing you will get resistance ... grinding resistance. Spin the other 3 tires to get a comparison. And definitely with mine I didn't see any shimmey or pulsing.- and the howl/moan was constant, whether brake pressure was applied or not.



I would start with the least costly item, 1. rotate the tires move the fronts to the back, could have a bad tire or thrown wheel weight.

The only thing that doesn't add up is you mention

: It will also go away while turning left.

I could do the same thing with my rear bearings (they went out 4 months apart), in a turn when you would rotate pressure off of the bad bearing wheel the moan would stop until recenter the car.

Not sure if I helped you any but provided my exposure to what I've seen.