I've personally have no experiences with NASA and Honda Challenge but I've read the stories. However, the one thing that I see is that they are doing right is marketing. Take this Rebate Offer by Toyo for Honda Challenge competitors for example. At $12 - $15 per tire is quite nice. Now, why don't we have this in SCCA Improved Touring? It's in Spec Miata but not in IT. How come?

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Richy Gonzalez
GB Racing - #24 ITA CRX
LAMIN-X Protective Films