roaring in front end, worse @ 40mph new message on nav screen service tire monitor?
roar in front end on 2004 Cadillac SRX
Sounds like you need to have those tires looked at ASAP. That is where I would begin, because you are getting Tire Inflation problem lights coming on as you drive.
i have the same problem with mine right now, try getting you ball bearings on the wheel checked out