A lovely swirl of tire smoke is under the aft fuselage
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/9998127@N06">Bill Abbott</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/wbaiv/32452331802/">Cathay Pacific Boeing 777 -300 B-KQX landing at SFO, port profile, tire smoke DSC_0833</a>