I have two of these tires for sale. Were on the front of my 928, but I've gone to a different size. No damage, never been flat.
Tread depth is a strong 6/32nds from the point where the grooves go from perpendicular to vehicle travel to angular across the tire on both tires. The small sections toward the edges are somewhat less than that, but those sections are less than 10/32nds when new. Pix available, send me an e-mail.

Both for $95 to a Rennlist member or 928 Owners Club member, plus shipping from zip 19382. They'll go to eBay in a week or so if nobody here wants them.

Cheers,

Gary Knox
West Chester, PA