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Z4Rick wrote: ↑Sun Apr 23, 2017 3:32 am Good point. Toss the bad one, buy a new one and quit worrying. At 5k miles it simply doesn't make sense to cough up $750 for 3 tires you don't need yet.

Busterboo wrote: ↑Sun Apr 23, 2017 9:23 am

Z4Rick wrote: ↑Sun Apr 23, 2017 3:32 am Good point. Toss the bad one, buy a new one and quit worrying. At 5k miles it simply doesn't make sense to cough up $750 for 3 tires you don't need yet.

Just two (which is bad enough) - the un-repairable one and the other on the same axle.

(This is, by the way, standard practice on a 911.)

Busterboo wrote: ↑Sun Apr 23, 2017 6:25 pm OK, have measured the fronts, which, after 5k miles, are an even 8mm. The undamaged rear, to my surprise, is an even ... 5mm.

So, it's decision time and I'm going to accept advice given, particularly mr wilks', factor in my own paranoia and replace both rears.

Thank you all for your help - except Rob, that is.

(Anyone want a driver's side rear Pirelli P Zero 255/35R18 94Y XL for little money? )