Verboden

During my last HPDE I corded out one of my front tires. I am running Nitto NT01s on a C4S. The backs have a decent amount of tread and I am wondering if anyone has experience in mixing a new front pair with used rears, keeping it all the same brands and models. Yes heat cycles, blah blah etc. Please comment if you have first or second hand experience. Leaning strongly to replacing all 4, but worth learning something too. Thanks,.