PS91's are a decent tire for the money. A friend of mine was running them this summer on his 330ci. He was an instructor at Gridlife this year at Road Atlanta. I went for a lap with him and felt that the tires did pretty good from what I could feel in the passenger seat. He has had nothing but good things to say about them.
Last edited by Halfkiddio; 12-15-2016 at 08:28 AM.
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