{"product_id":"national-road-max-st-st235-85r16tl-nrm18","title":"National Road Max ST ST235\/85R16TL","description":"\u003ch2\u003eNational Road Max ST ST235\/85R16TL\u003c\/h2\u003e\n\u003cp\u003eThe National Road Max ST in ST235\/85R16TL carries a 128 load index (3,968 lbs per tire) and a M speed rating (up to 81 mph). It's National's specialty trailer tire. This size fits popular vehicles like the Chevrolet Express 3500, GMC Savana 3500, Nissan Frontier, Ford E-350 Super Duty, and Jeep Wrangler JK.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTire Size:\u003c\/strong\u003e ST235\/85R16TL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e NRM18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection Width:\u003c\/strong\u003e 235 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAspect Ratio:\u003c\/strong\u003e 85\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRim Diameter:\u003c\/strong\u003e 16\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Diameter:\u003c\/strong\u003e 31.7\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Width:\u003c\/strong\u003e 9.3\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSidewall:\u003c\/strong\u003e Black Side Wall\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Index:\u003c\/strong\u003e 128 (3,968 lbs per tire)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed Rating:\u003c\/strong\u003e M (up to 81 mph)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Range:\u003c\/strong\u003e F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePly Rating:\u003c\/strong\u003e 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTread Depth:\u003c\/strong\u003e 8\/32\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTire Weight:\u003c\/strong\u003e 36.38 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout the National Road Max ST\u003c\/h2\u003e\n\u003cp\u003eThe National Road Max ST is a radial specialty trailer tire built for a wide range of towing applications, including toy haulers, 5th wheels, travel trailers, boat trailers, and utility trailers. It delivers reliable traction, stability, and load-carrying capability for everyday trailer use, making it a practical choice for RV owners and recreational haulers who need dependable performance mile after mile.\u003c\/p\u003e\n\u003cp\u003eThe Road Max ST uses a symmetrical five-rib tread pattern engineered to promote stable tracking and confident grip on the road. Its tread depth is optimized to reduce rolling resistance while supporting consistent performance over time. Grooves are designed to evacuate water efficiently, lowering hydroplaning risk in wet conditions. The tire is built using segmented molds for improved uniformity and a cleaner finished appearance. Higher load range options are available to meet the demands of heavier modern trailers.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFive-rib symmetrical tread design promotes traction and straight-line stability\u003c\/li\u003e\n\u003cli\u003eTread depth optimized to reduce rolling resistance on towing applications\u003c\/li\u003e\n\u003cli\u003eGrooves channel water away to help resist hydroplaning on wet roads\u003c\/li\u003e\n\u003cli\u003eSegmented mold construction improves tire uniformity and appearance\u003c\/li\u003e\n\u003cli\u003eAvailable in higher load ranges to handle heavier modern trailer demands\u003c\/li\u003e\n\u003cli\u003eRadial construction for smooth, consistent performance on the road\u003c\/li\u003e\n\u003cli\u003eBacked by a manufacturer's limited warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePerformance Profile\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eSeason Coverage:\u003c\/strong\u003e Specialty Trailer\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eAbout National Tires\u003c\/h2\u003e\n\u003cp\u003eNational is a private label tire brand with roots going back to 1935, building nearly nine decades of manufacturing expertise into replacement tires for passenger cars, light trucks, SUVs, and commercial vehicles. The brand's catalog spans a range of purpose-built product families, including the Commando series for highway and all-terrain use, alongside the Touring A\/S and Duration EXE lines developed for everyday passenger and high-performance applications.\u003c\/p\u003e\u003cp\u003eNational tires are engineered with contemporary construction methods and premium rubber compounds aimed at delivering consistent performance across a variety of conditions. Key performance attributes include high-speed stability, wet-weather traction, and uniform tread wear over the life of the tire. The brand's longstanding focus on reliability and driver safety makes it a practical choice for motorists seeking dependable replacement tires across multiple vehicle categories.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat does ST235\/85R16TL128M mean?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e235 is the tread width in millimeters, 85 means the sidewall is 85% of that width, and R16 is the 16-inch rim it mounts on. 128 is the load index (3,968 lbs per tire), and M is the speed rating (up to 81 mph).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat types of trailers is the Road Max ST designed for?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Road Max ST is well suited for toy haulers, 5th wheels, travel trailers, boat trailers, RV trailers, and utility trailers of medium to heavier weight. It is a specialty trailer tire and should not be mounted on any motorized vehicle.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho manufactures the National Road Max ST, and where is it made?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Road Max ST is produced by Sumitomo and marketed under the National brand by TBC Brands, Inc. These tires are manufactured in Thailand.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this tire handle heavier trailer loads?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The Road Max ST is offered in higher load range ratings, making it capable of meeting the load demands of many modern trailers. Always confirm that the load range of the specific size you select matches or exceeds your trailer's requirements.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Road Max ST help with fuel efficiency when towing?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe tread is engineered to lower rolling resistance, which can contribute to modest fuel efficiency gains during towing. Results will vary depending on the vehicle, trailer weight, and driving conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Road Max ST suitable for wet road conditions?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe tread grooves are designed to move water away from the contact patch, reducing the likelihood of hydroplaning on wet pavement. Like any trailer tire, maintaining proper inflation and staying within rated load limits is essential for safe wet-weather performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I get the full manufacturer warranty buying from TFS Wheels?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. We're an authorized National dealer, every tire ships brand new in original packaging, and the full manufacturer warranty applies. If a warranty question ever comes up, we work with National on your behalf.\u003c\/p\u003e\n\u003ch2\u003eAuthorized Dealer — 100% Brand New Wheels \u0026amp; Tires\u003c\/h2\u003e\u003cp\u003eTFS Wheels is an authorized dealer for every brand we carry. Every wheel and tire we ship is brand new, unused, and packaged in its original manufacturer's box. We never sell refurbished, demo, or return-stock product. All manufacturer warranties apply and our warehouse is staffed by people who only handle wheels and tires — no in-transit damage, no test-fits, no surprises.\u003c\/p\u003e\n\u003ch2\u003eFree Shipping (Lower 48)\u003c\/h2\u003e\u003cp\u003eFree shipping on every order — wheels, tires, and accessories — to the contiguous United States. No minimum order, no hidden fees.\u003c\/p\u003e\u003cp\u003eStandard delivery is 4–7 business days; expedited is 1–4 business days. Orders placed before 1:00 PM ET typically ship the same day. We do not ship internationally or to PO boxes.\u003c\/p\u003e\n\u003ch2\u003eFitment Guarantee\u003c\/h2\u003e\u003cp\u003eIf a wheel or tire marked \"Direct Fit\" or \"Aftermarket Fit\" for your vehicle arrives and does not fit as expected, we cover both the restocking fee and return shipping. The same applies if the bolt pattern does not match — provided your vehicle information was submitted at checkout.\u003c\/p\u003e\u003cp\u003eTo qualify for the guarantee, enter your year, make, model, and submodel before placing the order.\u003c\/p\u003e\n\u003ch2\u003eManufacturer's Warranty\u003c\/h2\u003e\u003cp\u003eEvery wheel and tire is covered by the full manufacturer's warranty against defects in materials and workmanship. Coverage terms vary by brand — most cover structural integrity for the life of the wheel and finish for 1 to 2 years from purchase. If you ever have a warranty question, contact us first; we work directly with the manufacturer on your behalf so you don't have to.\u003c\/p\u003e\n\u003ch2\u003eAccessories Included with Your Order\u003c\/h2\u003e\u003cp\u003eWhen you submit your vehicle information at checkout, the right \u003cstrong\u003elug nuts\u003c\/strong\u003e and (if needed) \u003cstrong\u003ehub-centric rings\u003c\/strong\u003e are automatically added to your cart in the correct sizes — no guessing, no separate ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTPMS sensors\u003c\/strong\u003e are also available in the cart. We program each sensor to your vehicle's exact year, make, model, and submodel before shipping, so they arrive ready to sync with your truck or car the moment they're installed. This typically saves customers the dealer or installer's programming fees, which often run several dozen dollars per wheel.\u003c\/p\u003e\n\u003ch2\u003eReturns\u003c\/h2\u003e\u003cp\u003eReturns are accepted within 30 days of purchase on items in new, unused condition. A 25% restocking fee applies to general (change-of-mind) returns, and the buyer covers return shipping.\u003c\/p\u003e\u003cp\u003eThe restocking fee and return shipping are waived for incorrect items, transit damage, or fitment issues when vehicle information was provided at checkout. Single wheels, single tires, mounted items, special orders, and accessories (lug nuts, locks, hub-centric rings, TPMS sensors, installation kits) are final sale.\u003c\/p\u003e\n\u003ch2\u003eNeed Help?\u003c\/h2\u003e\n\u003cp\u003eTalk to a tire \u0026amp; wheel fitment expert: \u003cstrong\u003e\u003ca href=\"tel:+18772902955\"\u003e(877) 290-2955\u003c\/a\u003e\u003c\/strong\u003e or \u003ca href=\"mailto:sales@tfswheels.com\"\u003esales@tfswheels.com\u003c\/a\u003e (Mon–Fri 9am–5pm ET).\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":48130428141719,"sku":"NRM18","price":180.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0635\/2411\/0487\/files\/national-road-max-st-st235-85r16tl.jpg?v=1786655734","url":"https:\/\/tfswheels.com\/products\/national-road-max-st-st235-85r16tl-nrm18","provider":"TFS Wheels","version":"1.0","type":"link"}