the 2007 to 2017 QX50's Platform is entirely different than the 2019 to Present QX50.
The earlier being a based on RWD, and the Later, a FWD based Platform.
Some basic things to consider on either platform is Air Pressure ~ perhaps side's tire is over or under inflated causing the pulling sensation.
Also, Road Grading, some roads are graded to assist water drainage so the road surface is exactly always level.
Steering Systems. The earlier RWD Based Models use good old fashioned Mechanical Steering vs. Electronically Assisted in the later 2019 and beyond models.
Wheel Balancing ~ Bent Rims ~ Pot Hole Damage ~ Strong Winds ~ Highway Aerodynamics ~
Plenty of factors can affect the Pulling Sensations in either model.
Frankly, I think both Models suffer from having too narrow of a set of tires on them out of the factory.
But narrow tires offer less resistance and better fuel milage ~ albeit minimal and they're cheaper than a wider beefier tire, hence the Factory's decision to go with the lowest bidder and cheapest tire ~ even if it is a known brand name.