{"product_id":"hoosier-r80-4-5-10-0-5-sprint-kart-tire-4-5-rim-width-ignite-class-legal","title":"Hoosier R80 4.5\/10.0-5 Sprint Kart Tire - 4.5\" Rim Width - Ignite Class Legal","description":"\u003cp\u003eWhen you demand maximum grip at the apex, bolting on the right racing gear separates the podium finishers from the rest of the pack. The Hoosier R80 4.5\/10.0-5 Sprint Tire is engineered specifically for the rigorous demands of junior karting and serves as the spec front tire for all Ignite classes, as well as the mandated rear tire for Ignite Rookie divisions. Its ultra-stiff R80 compound minimizes rolling resistance, allowing lower-horsepower karts to remain free and fast on the racing surface without bogging down through high-load corners.\u003c\/p\u003e\u003ch2\u003eOptimizing Your Go Kart Wheels and Tires\u003c\/h2\u003e\u003cp\u003eTranslating steering input into immediate lateral bite requires a tire that won't give up under pressure. The Hoosier R80 delivers an optimized contact patch that communicates track conditions directly to your steering wheel, giving drivers the confidence to brake later and carry more rolling speed. Whether you are dialing in a Margay Ignite chassis or fine-tuning your setup after installing a fresh lo206 carburetor kit, this tire provides the consistent, predictable handling required to shave tenths off your lap times. The stiff sidewall construction withstands aggressive curb strikes while maintaining optimal tire pressures throughout long, grueling heat races.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications \u0026amp; Parts Number Verification\u003c\/h2\u003e\u003cp\u003eFor racers competing in sanctioned regional series, adhering to the rulebook is just as critical as your setup. Verifying your exact parts number ensures you are running the spec rubber mandated for your class. The Hoosier R80 (MPN: 22180R80) is the definitive choice for Ignite competitors, offering a durable compound that significantly reduces wear rates, saving your team valuable time and budget over a full season of competitive racing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpec-Legal R80 Compound:\u003c\/strong\u003e Harder durometer (70-72) specifically designed to reduce rolling resistance in lower-horsepower LO206 and Ignite classes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Sizing:\u003c\/strong\u003e 4.5\/10.0-5 dimensions perfectly matched for 4.5-inch rim widths, ensuring a flush, aerodynamic fitment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Sidewall Rigidity:\u003c\/strong\u003e Prevents tire deflection under heavy lateral loads, translating to sharper turn-in response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent Heat Cycles:\u003c\/strong\u003e Engineered to reach optimal operating temperature quickly and maintain grip without falling off late in the race.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Application:\u003c\/strong\u003e Mandated as the front tire for all Ignite classes and the spec rear tire for Ignite Rookie divisions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTubeless Construction:\u003c\/strong\u003e Streamlines the mounting process and reduces overall rotational mass for improved acceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-Weather Predictability:\u003c\/strong\u003e Treadless slick design that still offers highly predictable breakaway characteristics when track conditions shift.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the Hoosier R80 4.5\/10.0-5 tire legal for all Ignite classes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this tire is the mandated spec front tire for all Ignite classes and serves as the required rear tire for Ignite Rookie divisions. Always verify your specific series rulebook to ensure compliance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the recommended rim width for this tire?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This tire is precision-engineered for a 4.5-inch rim width. Using the correct rim width is essential for maintaining the proper contact patch and aerodynamic profile.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the R80 compound differ from other Hoosier compounds?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The R80 features a harder durometer (70-72) specifically designed to minimize rolling resistance. This is ideal for lower-horsepower karts, such as those using the LO206 engine, as it keeps the kart free and fast through corners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this tire require tubes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, the Hoosier R80 features a tubeless construction. This design helps reduce overall rotational mass and simplifies the mounting process.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How should I manage tire pressure for the R80?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Because of the stiff sidewall construction, these tires are designed to maintain consistent pressure throughout long heat races. We recommend checking your pressures immediately after coming off the track to establish your baseline hot pressures.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/r80-hoosier-710x5-sprint-tire-r80710\"\u003eR80 Hoosier 710x5 Sprint Tire for Ignite Senior Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/r55-hoosier-450x5-sprint-tire-r55450\"\u003eHoosier R55 Sprint Kart Tire - 4.5\/10.0-5 - Sprint Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wet450-hoosier-450x5-rain-tire-wet450\"\u003eHoosier 450x5 Rain Tire WET450 for Wet Track Dominance\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SwiftKarting","offers":[{"title":"Default Title","offer_id":52380537159999,"sku":"R80450","price":109.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/6843\/4239\/files\/tires-r80-hoosier-450x5-sprint-tire-currentl-out-of-stock-r80450.jpg?v=1773223437","url":"https:\/\/metro-merch-3.myshopify.com\/products\/hoosier-r80-4-5-10-0-5-sprint-kart-tire-4-5-rim-width-ignite-class-legal","provider":"Metro Merch","version":"1.0","type":"link"}