You could have a tire issue rotate the tires side to side and see if it changes here is a brief idea of radial pull. This is not my write up I copied it from another site to save time
Those of you who are not in the tire industry won’t encounter folks using this phrase much - but it is still quite commonly used to describe a vehicle drift or pull.
The term derives from the time when cars were changing from bias to radials - and radials were much more prone to this. It’s caused by a tire property called concity. (Root word: cone). Conicity is a force pushing sideways to the direction of travel.
All tires have this, and the value can be positive or negative, but in order to get a pull, the difference in conicity has to exceed the tolerance level of the vehicle (Some vehicles are sensitive, some are not) - and this is almost exclusively a front axle issue. Put another way, it’s not necessarily a single tire - it’s the difference between the pair of tires on the front axle. Moving one of the tires (or both) to the rear might solve the problem - until the tires are rotated.
BTW it is possible to wear concitiy into a tire. So older tires may develop a pull if the alignment is off.
There is no safety issue - other than the steering wheel requires more attention.
But if we are talking about new tires, then returning to the point of purchase with the complaint ought to result in some resolution.
But alignment can also cause a pull. That’s why swapping the front tires side to side is a good test.
If the pull completely changes direction, the problem is 100% in the tires.
If the pull doesn’t change at all, then the problem is 100% alignment.
if the pull dissappears or changes dramatically (other than completely changing direction), it’s both the alignment and the tires.
here is a link with better information and diagnosis
http://www.agcoauto.com/content/news/p2_articleid/181