Well you could need new piston rings or have leaking valves if it is getting burned off.
It’s also possible that it’s getting into the coolant system.
If you’re burning a good amount of oil the exhaust will be blue/black. Burning coolant is unusually white which can be more difficult to tell in the colder months.
Oil in the coolant looks like chocolate milk.
Sounds like you’re getting some used tires or something.