Do you have the 2WD or 4WD Sorento?
Have you tried rotating tires front to rear to see if this makes a change to the vibration at all?
A vibration starting at 40 mph and getting worse with an increase in speed does point to a potential wheel/tire issue.
Tires can separate internally and get out of shape which will give you this issue. The wheel will still balance up okay but the tire being out of round will mean you still get a vibration. This can happen on a tire of relatively low mileage.
Rotating front to rear will give you a good idea if you are dealing with a wheel/tire issue.
Front imbalance generally you will feel through the steering wheel/floor around the pedals where as rear you will feel through the seat.
A good tire shop should be able to inspect the tire and see if it is out of shape.
You will need to rule out a wheel/tire issue before proceeding to see if you have anything else in you drive-train causing the problem. Whilst rotating the tires it would be worth checking suspension/wheel bearings for play also.
Hope this helps.
Sunday, April 7th, 2019 AT 10:37 AM