Car sounds loud and feels like a tire is going flat after traveling at about 75 mph for some time, about 45 min. or so. No flat tires,
What is your question?
Car sounds louder than usual, and it feels rough as if a tire is going flat after driving at about 75mph for some time, about 45 minutes or so. The tires are not flat, the car smells hot, no service lights come on. The car starts up and runs normally the next day. I have about 143,000 miles on the car, and a rebuilt transmission with about 5,000 miles on it. Mechanic was unable to find anything when he test drove it the next day. Help?
What makes this problem better or worse?
Driving at speeds of about 75mph, for 45minutes or so. Drives normally after sitting overnight.
How long has your 2011 Nissan Altima had this problem?
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Hello, Dave here, contributing to RepairPal and providing expert advice since 2010.
Admittedly, it is a difficult situation to duplicate if you have to drive it for so long to get the problem to happen. Reasonably speaking, no technician near you is going to be able to try and get that to happen. However, perhaps you can drive the vehicle that long and take it to a shop near you for it to be evaluated.
The only guess that I have at this moment is that you could have a wheel bearing that is wearing out. The vehicle can be lifted in the air and the wheels can be spun to see if it will bearing is resisting normal spinning of the wheel. You can also check for free play at the wheel bearing.
I would definitely recommend professional assistance and assessment. Find a shop near you --
https://repairpal.com/auto-repair-near-me
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