Summary: These come standard on the MX5 from the dealership. Had the mk2.5, and felt these tyres were too harsh for the chassis and suspension, so I swapped to the Toyo T1R, which on that car was a far superior tyre. I now have a mk3.5 sportstech, and am hugely impressed with the Bridgestones.
Summary: Had two sets of these in 215/45/R18 on my Spec.B, driven on them hard and driven a lot. They're nearly on par with the PZero Rosso Asimetrico's, however a tiny little bit better in wet and they do tend to squeak a bit on the limit in the dry. Wear out equally fast as aforementioned Pirelli's.
Summary: Bought these tyres as I thought that run flats would be a good idea on my wife's car meaning she could probably make it home without calling anyone out. The problem with these tyres are they are so unforgiving giving an extremely hard ride.
Summary: Recently changed front 2 tyres as car came with these on the fronts. Grip in dry and wet is suberb and makes the car feel glued to the road. Can throw the car into corners with ease knowing you will smile coming out the other side putting your foot back on the accelerator.