Yes, they are slightly noisier than the stock tire, as any A/T tire will. A/T tires have wider gaps in the tread, which will cause an increase in noise rolling down the highway. That said, the Cooper AT3 are not dramatically noisier on the street. I have a set that will probably be replaced before the coming winter. I'm not sure that I will go with the Coopers again, as I have experienced some strange wear patterns on the inside and outside lugs on all four tires. Other than the strange wear, they have been fine tires.