I have just come to the end of my second pair of Michelin PR4s and changing them has been forced on me by a rear wheel puncture at the weekend. My local tyre fella, SPS at Horsford, Norwich, is an excellent source of information and as the PR4s no longer available in 19”, and didn’t want the PR5s, I asked about the BT23s.
He advises that the BT23, although still available, has been superseded twice.
I asked for a comparison to the Michelin’s and he stated that the performance of the BT23 was comparable to the PR3, the next gen T30 the PR4 and latest T31 the PR5.
As on a budget I opted for the T30, £215 fitted on a ride in ride out basis, and although only done about 40 miles of slimy roads I could already feel it’s another good tyre.
Can’t recommend SPS at Horsford highly enough if you are in the Norfolk area.