When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The NCT has a 240-A-A, W speed rating/168MPH
The F1 is 300-AA-A, 300, Y rating/186MPH
This means they wear faster, have less dry traction, and can't be driven as fast safely.
Hope this helps.