<div dir="ltr">Sounds exactly like what I had happen to the Yokohama (vintage 2013) on my 2008 S4 Avant during the drive home with our newborn boy about a month ago. Upon inspection, an internal belt had failed, and outer tread was peeling away. Fortunately, it held, so we could get home without issue (aside from the noise). <div><br></div><div>If the noise goes away when you change the tire, you've located at least the location of the issue!</div><div><br></div><div>-Peter</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Oct 14, 2017 at 2:03 PM, Robert Nogueira <span dir="ltr"><<a href="mailto:nogera@me.com" target="_blank">nogera@me.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Anyone know how to determine if a tread  is separating on a tire (bias ply)?<br>
I’m hearing a whup-whup-whup which increases with the cars speed.<br>
Tire otherwise looks normal.<br>
<br>
Bob<br>
<br>
Bob Nogueira<br>
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