Some do go to the doctor but only after they have been sick for several weeks, at which point the test can come back negative even if they had the infection. (discovermagazine.com)
Sure enough, the tyre noise, on roads I know quite well, was no worse than many other cars around the same price point tested in the past. (motoring.com.au)
Sometimes it can help to do a 7 point test if you tend to hold your fat different than the normal. (legionathletics.com)