I believe that when Tesla designed the Model 3 they used 255 tires and then decreased the tire width later in the process to increase the range. These tires look like what should have come on the car in the first place. Even the pics from the owners manual appear to have wider tires than the 235s. I cannot comment on how they effect range because I have not had them long enough, but after I put about 5,000 miles on them, I will compare to my numbers with the OEM Contis and post an update.