At 6,000 mile area----my OEM rear is starting to come apart at thread blocks. In one week, including 260 mile speedy round trip quite a difference was noticed.
I have had this trouble before---on Reflex, at least three rears, Bridgestone replaced all but with Bridgestone, so problem just repeated itself. Actually had one come apart , but retained air in Japan---problem partial at least--Honda had J speed rated tire on bike that could go 70 plus downhill with tailwind. In Japan I just went out and replaced with Dunlop.
Here our SilverWings, probably no great danger at 30-35 neighborhood speeds. But at 80-85 indicated on Freeway in 100 degree temps, I think hazard.
I will try to order matched of new today----not do anything with Bridgestone as they make some really crappy tires----just lived thru 3 plus years of Bridgestone OEM Run Flats on my BMW Coupe. Rode like lumber wagon. Car is bye bye---the $2000 replacement cost for tires means it got traded----the wife's new Honda CRV has Bridgestones---we already have had balance and runout problems.
So bottom line---Check your OEM Bridgestone rears.
Many people don't like what I say but I do the riding and have been for years.
Expanding: Honda only has the Bridgestone & IRC on the approved list. Metzeler does not have a matched set of tires on their list for Silverwing, something to think about. I have had good luck with IRC on BMW bike a few years ago.
I think this tire thing is serious business---your connection sometimes between life and death. Only takes one tire related high speed thrill to make believer of you---I had flat at 85 near Mankato MN returning from Sturgis in middle of night, on BMW K bike, I needed 2 lanes to get bike down to walking speed. No traffic at night----daytime could have been fatal. Went slower for quite awhile.
John Grinsel