No idea but they are relatively cheap.

hmm they are a bit highger then what I would like to spend how good are the normal federal ss595's??

They are great, i have them on my car. Only problem is that they are noisy, though who really cares anyway. They have seen 2 track days and about 5000k of driving and although melted still look fine, although i think one more track day will proberly kill them. They are very good in the wet compared to a lot of other tyres i have driven on, but squeal a bit if pushed but stick well and react predictably. you would proberly be looking at around 180 each or something like that, but not sure

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