If it looks like its splitting or cracked real bad, i would take it back to the palce you got it. I had the same thing happen to me on some toyo z rated 205/45/16. They were cracking like that on inside and out side. I took it back to BOSS wheels and they sent it back to TOYO becasue it was a deffect. They sent me a bran new one. If you hitt a curb it shouldnt split like that . But deffinetly get it changed casue if its leaking and you hit a good bump it might pop it and then you will fuck your rim up.