I recently purchased a new 2015 Chevy Impala LT with 19" wheels and did some research on your website and found some helpful info regarding road noise on new 2015 Chevy Impala and similar complaint. I noticed what I consider to be unacceptable road noise from the tires. I brought the vehicle back to the dealer and presented the printout from you forum of similar complaints about excessive road noise and was told "We don't look at anything from the Internet". And pushed it back to me. They took the vehicle and checked it out and said everything is up to specs and with that I took it to a Kia Dealership and traded it in with 1000 miles on it toward a 2015 Kia Cadenza that I am very happy with. It's unfortunate that this occurred but I think the dealership should pay attention to Internet information even if it is negative.