200+ horsepower on the front wheels, you should expect at some point wheel spinning, doesnt really matter what tire as long it is of a known brand, mostly road condition and weather (mist in the morning is worse than rain) are the reason. Bridgestone is a good brand, my OE Turanzas on my 310 VZ and after 35000 km still behave great, no spinning, well its also 4wd, but yes, the eco tires tend to spinn more than sporty oriented ones as their compound is to last longer. And yes , there are differences between Michelins/Bridgestones/Continentals etc but what may be good for my car may not be good for yours, i.e, different weights, different settings, diferent suspensions, different heights, different traction assistance systems, different driving habits, etc. So, we can compare tires when we use the same car under exactly the same conditions/parameters but it is difficult vwhen we use different cars under different conditions/parameters. In other words, what can be great for me and my car may easily be junk for somebody else. I was always a Michelin guy but have to admit that the Turanzas on my VZ are so far great, so when time comes to be replaced I will really have a puzzle to solve.