I've got the K110s on my S6, and my dad has them on his Corvette(which is modded to the tune of ~450hp). We both like them a lot. They are an excellent street tire, and would hold up fine to some autocross.
However, if autocross performance is your main goal, I'd probably step up to the Ventus R-S3. I have a friend who has them in 225/45/17 on his stage 4 ng900, and they are ridiculous in the dry. However, they are worthless in the rain, and downright dangerous below 40 degrees. And, tbh, that is exactly what you should expect from a tire like that. The K110's have actually surprised me with how good they do in the wet; they offer much better traction than I expected. They are also not bad down below freezing, but obviously they have NO business being driven in snow. So don't expect them to be a good winter tire either.