LeBron James has quite the bone to pick with a California car company ... publicly admonishing the joint for "lying" about hooking him up with a new set of wheels.
The Effortless Motors dealership in Riverside shared a clip of a new Bugatti being driven into the back of a truck on Wednesday ... featuring a caption claiming the Lakers superstar was its "biggest VIP customer" and congratulating him for "trusting" its business.
James himself eventually got wind of the post .