Just worth a note as well actually......
I fully intended to have Scorpion Sync ST's refitted when we had them changed last time, in error the garage fitted STR's, the STR is a more road bias tyre, tho still capable its not got anything like the nicer agressive and tractable pattern of the ST variant, we had a brand new spare wheel with an ST put on with 3 brand new STR's, we have currently done about 15/20k on those tyres since and the STR's are nearly knackered front and rear, however the single ST is still in really good shape, if they still do the ST I would choose that over the STR anytime, not that the STR is a bad tyre, just the ST is better IMHO.