Most people are going to be running a 285/35R19 on a 19x9.5" wheel. I've done it and it was fine with a Bridgestone RE71R. Check your wheel manufacturer specs to see if a specific tire will fit on a 9.5" wheel. /30 aspect ratio tires won't stretch onto wide/narrow wheels as well as a /35 or /40 tire would because of the shorter sidewall.