Here's a recent thread about it. You'll see I wasn't convinced, until I experienced it in dramatic fashion.
https://r.tapatalk.com/shareLink/topic?url=http%3A%2F%2F986Forum%2Ecom%2Fforums%2Fs howthread%2Ephp%3Ft%3D73341&share_tid=73341&share_fid=31135&share_type=t&link_source=app
You can see my marks on the sidewalls, which lined up with the valve stems at the beginning of the day.
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