yes my troubles are near the end of a tyres life. mine are always more then half worn out, forget what its like to ride on round tyres. ie not "cupped'
Logic based on what's happened on my bike over the 8 years I've had it, nothing more.
I've had BT 21 and Z6 puncture issues in the past but with the last three sets of BT 23s in a row no punctures. All I know is the 23s are steel belted which are more puncture resistant (
read: not puncture proof) over a standard radial tyre so tyre choice might also be a factor. The T30s now fitted are steel belted as well.
Another issue
might be related to available tyres suitable for the 1100 rear. The BT 21s and Z6 were 160/60ZR17 fitted by dealers to mine as the OEM size wasn't available. On the surface it may not seem much of an issue but looking at the max load index of 69 (325kg) for the 160/60, 73 (365kg) for the OEM 160/70 the 1100 may have simply been to heavy and might have caused some extra stress in the tyre which wouldn't have been there had OEM size was used.
I now use the 170/60 (OEM 1300) with a load index (72 (355kg) which should handle the 1100 ok.