Yes. We source Nankang tires through authorized US distribution, and every tire ships with the DOT identification number, manufacturer markings, and original date code intact. Nankang counterfeiting is rare — the tires are already affordable, so there's no price arbitrage to fake them. All Nankang tires we sell carry valid DOT certification for US road use, including the NS-2R and AR-1 (both are DOT-legal despite their motorsport-focused designs). What matters more with tires is freshness — we pull from active inventory rotation, not aged stock, so the date code on your tires reflects recent manufacturing.

Most in-stock Nankang sizes ship within 1 to 3 business days from US warehousing. Popular tuner sizes — 205/50R15, 225/45R17, 245/40R18 and similar — are typically stocked in the NS-2R and AR-1 lineup. Less common sizes, full sets of 4 in specific fitments, and AR-1 in track-day quantities may have a 1 to 2 week lead time. Tires ship in pairs or sets via ground freight, and we provide tracking the moment they leave the warehouse.

Nankang tires carry the manufacturer's warranty against manufacturing defects. Returns on unmounted tires in original condition are accepted within 30 days. Once a tire has been mounted, balanced, or driven on, it is no longer returnable — this is universal across the tire industry, since the bead is altered on first mount and tread surfaces immediately accumulate driving wear. Defective tires showing manufacturing flaws (sidewall separation, tread issues, etc.) are handled through Nankang's warranty program, and Kami Speed processes claims on your behalf. Track use voids most tire warranties industry-wide, and the AR-1 is sold explicitly as a competition tire with no warranty against track wear.

NS-2R is Nankang's gateway track tire — 120 treadwear, semi-aggressive tread pattern with enough grooves for light rain, and a compound that comes alive at track temperatures. Good for autocross, casual track days, and aggressive street driving where you still need to handle a sudden downpour. AR-1 is the next level up — 100 treadwear competition compound with minimal tread, designed for dry track use and serious autocross. Faster than the NS-2R when warm but not a tire for wet roads, and shorter usable life on the street. NS-25 is Nankang's UHP summer street tire — asymmetric tread pattern for daily driving with real wet performance, no track pretensions. If you're tracking your car: NS-2R for the first season, AR-1 once you know what you're doing. If you want a performance street tire that handles all weather except snow: NS-25.