touring car tyres

[snail speed]

Having raced modified touring carsfor the first time and loving the speed. Iv came across a problem with tyres and im woundering if anyone has any experience with it.
the problem is the tyres falling apart. I had a tyre fail and car pulling to the side flipping and heading into a fence. Leading to a broken car. On closer inspection there was a chunk of rubber tyre missing on a set of rp30s. I wasnt the only person this happened to. Sorex 32 aswell. I no speed has somthing to do with it but how are the top boys keeping there tyres together. Is it somthing to do with additive and tyre warmers. It was spidergrip orange i was using. Im not sure about the others
Thanks