Can I buy a 190-section Bridgestone BT021?

Q. I have a VFR1200 2010 model it has Bridgestone BT021 190/55ZR17 rear and BT021 120/70ZR front I wanted to know if I could put Bridgestone BT023 or BT023 GT as my friends are running them on their Blackbirds.
Keith Colbourne, email

A. Bridgestone is currently developing a 190/55 x 17 for this and other bikes with the same sized rear. Buy cheap motorcycle tyres. It was supposed to be here in July but due to the earthquake in Japan it has been delayed slightly and is now due in November.