flattrack

I am running '95 Cobra R's on my '09, the offset is wrong but it looks great! I bought them used so they have a bit of rash and one has a very minor bent place so it's time to replace. When I bought them they had some very worn Nitto NT555 tires, the short time I ran them they seemed extremely loud, is this what others have experienced with the Nitto tires? I am looking at package deals from AM and the choice is the same Nitto's or Sumitomo HTR Z's. Any input?