dual compound rear tyre - worth having ?

[hawkeye]

There are indeed several on the market, including the ones you've got (as hightower pointed out).

So if there's a faulty batch out there, Bridgestone are giving you a load of money back, and issuing a recall, yes?

Tyre fitter said was only happening on 021 tyres since I changed to 023 no problem , Bridgestone would not accept liability for the fault however .