I'm also running 185 front, 205 rear SG compaound R888s for sprinting/hillclimbing in the club championship (class 5). As I drive to all events, I have been clocking up a fair few road miles as well. I fitted them halfway through the season so I have driven from Slough to Shelsley, Loton, Harewood, Curbourough and Wiscombe and competed at each of those events. All events were in the dry apart from Shelsley. I reckon the tyres should last for all of next season as well. They are much better than the CR500s I have for normal road use (and competed on before fitting the Toyos). Are they as good as the Kumhos? I don't know as none of the fastest competitors are using R888s and I am not very quick, but I do know they have given me a lot of confidence and all my times have improved this year compared with last.
As a road tyre they offer enourmous grip but I suspect you might only get a maximum of 2-3000 miles out of them and probably a lot less if you are a hooligan in a big bhp car. In the wet they are fine but as with all tyres of this type, care is needed in standing water/heavy rain.
Yellow SL #32 - member of Drowned Rat Racing