Mr Tuffys are not so tough. I've had goatheads penetrate them! Plus they do nothing for protecting the sidewalls. Racing tires will leave you very vulnerable to sidewall flats and total damage...if that is a concern. If your Gatorskins have survived sidewall damage then your probably ok. But if your looking for a very flat resistent tire in the tread and sidewall then Specialized Aramadillos are the best.