Key Takeaway
- The Three-Peak Mountain Snowflake (3PMSF) is a mark depicting a snowflake inside a mountain peak, awarded to tires that officially meet performance standards for braking and traction on winter roads.
- For pickup and SUV drivers seeking 3PMSF-certified options, NEXEN TIRE offers the all-terrain ROADIAN ATX (with a UTQG of 560/600 A B on P-metric sizes and speed ratings of Q, S, T, H, and V) and the highway-terrain ROADIAN HTX2 (with a UTQG of 700 A A/B on P-metric sizes and speed ratings of R, S, T, and H).
- Even with 3PMSF-rated tires on a truck, safe winter driving requires setting cold tire inflation to the door-jamb placard specification at the lowest expected seasonal temperature and leaving two to three times the normal following distance on slippery roads.
If you are shopping for all-terrain tires for your pickup that also perform reliably in snow, knowing which sidewall markings and design specs actually matter is the best place to start. Many truck tires look aggressive on the rack, yet tread block appearance alone does not tell you how a tire will behave once winter weather settles over the pavement. Separating visual appeal from verified test standards gives you a clear, practical framework before you choose your next set for mixed trail and cold-weather driving.
What the Three-Peak Mountain Snowflake Mark Tests and What It Leaves Out
When you examine the sidewall of a winter-capable truck tire, the "severe snow use" graphic—widely known as the mountain snowflake symbol or 3PMSF—is the primary credential to look for. Understanding what sits behind that icon keeps expectations realistic when the weather turns. The symbol indicates that a tire meets established requirements for severe snow traction, but it does not define ice grip or off-road performance over rough terrain. Looking closely at the underlying test procedure explains why a sidewall badge is only one part of your winter preparation.
That evaluation is governed by the ASTM F1805–20 protocol, formally titled "Standard Test Method for Single Wheel Driving Traction in a Straight Line on Snow- and Ice-Covered Surfaces" (Federal Register). While the broader ASTM F1805-20 test method evaluates straight-ahead driving traction for passenger-car and light-truck tires on snow and/or ice-covered surfaces, the NHTSA definition specifically calls for medium-pack snow during the qualifying traction-index test (ScienceDirect). In regulatory discussions, industry commenters, including USTMA, agreed that ASTM F1805–20 should serve as the standard for defining a snow tire and that a qualifying tire should achieve a traction index of at least 112.
Just as important for a pickup driver is what this test leaves out. Because ASTM F1805–20 measures single-wheel driving traction in a straight line—essentially how well a tire pulls forward when accelerating on packed snow—it is strictly a driving-traction test. It is not the paved-surface peak-braking-coefficient test, which falls under a separate standard, ASTM E1337–19. Knowing this distinction matters on a cold morning commute because getting a heavy pickup moving from a standstill is a very different mechanical challenge from bringing that same vehicle to a controlled stop on a slick downgrade.
How 3PMSF All-Terrain Tires Compare with Dedicated Winter Tires on Snow and Ice
If your truck faces frequent freeze-thaw cycles or polished intersections, you might wonder whether a 3PMSF-certified all-terrain tire replaces a dedicated winter tire. While an all-terrain option provides a practical year-round balance for mixed surfaces, dedicated winter tires are specifically engineered to provide improved traction on ice (University of Michigan).
The difference comes down to how the rubber compound and tread architecture respond to sub-freezing temperatures. According to NEXEN TIRE, winter tires are formulated with rubber that does not easily harden in cold weather, helping the tread avoid a loss of grip when temperatures plunge. In addition to flexible cold-weather rubber, dedicated winter tires incorporate specialized technology designed to improve braking, water and slush drainage, and traction across irregular winter surfaces.
For a pickup owner, this creates a clear decision point. If you want a single set of tires to stay on your truck year-round while providing verified severe-snow forward traction on occasional winter storms, a 3PMSF-rated all-terrain or all-weather highway tire fits that role. If your primary concern is maximum stopping power and grip on sheer ice and consistently bitter, uneven winter roads, a dedicated winter tire brings specialized cold-weather rubber and ice-focused engineering to the task.
NEXEN TIRE ROADIAN ATX and ROADIAN HTX2 3PMSF-Certified Options for Trucks and SUVs
When your driving mix calls for year-round versatility backed by 3PMSF certification, NEXEN TIRE provides two distinct options for light trucks and SUVs depending on how much time you spend off the pavement.
The ROADIAN ATX is built for CUVs, SUVs, and light trucks that need genuine all-terrain capability alongside winter readiness, carrying the 3PMSF mark across its lineup with the exception of original-equipment (OE) and flotation sizes, and spanning 15- to 22-inch rim sizes with Q, S, T, H, and V speed ratings and a UTQG rating of 560/600 A B on P-metric sizes. To keep a pickup moving through varied conditions, the ROADIAN ATX uses tread technology engineered to retain grip even as the tire wears down, paired with 3D sipes that aid traction in snow, mud, and wet conditions. Deep grooves and sidewall lugs work alongside a puncture-resistant sidewall, and for LT sizes above 16 inches, NEXEN TIRE incorporates a 3-ply construction. Drivers can also choose between two distinct sidewall designs when mounting the tire to match the look of their truck.
For truck and SUV owners who spend the majority of their miles on paved roads, the ROADIAN HTX2 serves as a highway-terrain option engineered for high-mileage and all-weather driving performance, carrying the 3PMSF mark on all sizes except original-equipment (OE) fitments. It is offered in 16- to 22-inch rim sizes with R, S, T, and H speed ratings, and it carries a stated UTQG of 700 A A/B on P-metric sizes.
| Model | Category & Vehicle Application | 3PMSF Certification Scope | Available Rim Sizes | Speed Ratings | UTQG (P-Metric Sizes) |
|---|---|---|---|---|---|
| NEXEN TIRE ROADIAN ATX | All-terrain tire for CUVs, SUVs, and light trucks | 3PMSF-marked | 15 to 22 inches | Q, S, T, H, V | 560/600 A B |
| NEXEN TIRE ROADIAN HTX2 | Highway-terrain tire for SUVs and light trucks | 3PMSF-marked except OE sizes | 16 to 22 inches | R, S, T, H | 700 A A/B |
Sizing Choices and Fitment Rules When Moving to Smaller Wheels for Winter
Some pickup owners consider mounting their winter-ready or all-terrain tires on a smaller-diameter wheel for the cold season—for example, stepping down in rim diameter while choosing a taller tire sidewall. Before changing wheel or tire dimensions on a light truck, you should check the tire placard on the driver's-side door jamb or your owner's manual and follow established industry fitment standards.
To preserve the handling, braking, and safety characteristics intended by the vehicle manufacturer, replacement tires should match the original equipment (OE) size designation—or be an option explicitly approved by the vehicle or tire manufacturer—and carry the same size, load index, and speed symbol shown on the vehicle's tire placard and/or in the owner's manual (USTMA). Most importantly for a heavy pickup, you must never select a tire that is smaller than the OE tire or one that provides less load-carrying capacity at the specified placard pressure.
If you do change wheel and tire dimensions from the factory setup, two physical checks are essential:
- Overall Diameter Tolerance: Keep the replacement tire's overall diameter within the vehicle manufacturer's specified tolerances; if the automaker does not publish a tolerance, use a guideline of staying within ±3% of the overall diameter of the tire listed on the door-jamb placard.
- Full Suspension and Steering Clearance: Whenever replacement rims or tires differ in size from the OE setup, physically verify clearance at all four wheel positions on both front and rear axles. Check around the brakes, fender wells, shock towers, and other suspension components through full suspension jounce and rebound, and inspect the steering tires at full left and right lock to ensure nothing rubs.
Winter Tire Pressure Management and Safe Driving Practices
Even a properly sized, 3PMSF-certified tire relies on accurate inflation pressure and adjusted driving habits to perform safely when temperatures drop. Cold air contracts, which means tire pressure falls as winter sets in.
Follow these guidelines to keep your truck's tires properly inflated and controllable through the winter months:
- Use the Door-Jamb Placard, Not the Sidewall Number: NHTSA advises filling every tire to the vehicle manufacturer's recommended pressure printed on the driver's-side door frame placard or in the owner's manual—never to the maximum pressure number molded onto the tire sidewall (NHTSA).
- Check Pressure When Tires Are Cold: Always measure inflation when the tires are cold, which NHTSA defines as when the vehicle has not been driven for at least three hours.
- Target the Lowest Seasonal Temperature: Set your tire pressure to the vehicle's specified placard pressure at the lowest seasonal temperature your truck will encounter during operation (NHTSA).
- Compensate When Inflating Indoors on Frigid Days: If you set your tire pressure inside a warm garage or shop on an extremely cold day, it may be necessary to add 3–4 psi above the placard pressure to account for the temperature drop once the truck goes outside. Later, when it is convenient and the tires have cooled outdoors, recheck the pressure and adjust it to the exact placard specification if needed.
- Multiply Your Following Distance: Because slippery winter surfaces are unpredictable and lengthen braking distances, NEXEN TIRE advises leaving a safe following distance two to three times greater than usual behind the vehicle ahead of you.
FAQ
How can I make sure the NEXEN TIRE ROADIAN ATX or ROADIAN HTX2 size I order for my pickup includes winter certification?
Before finalizing an order for the NEXEN TIRE ROADIAN ATX or ROADIAN HTX2, verify the exact size designation on the driver's-side door jamb placard and check the official spec sheet for your specific trim. Confirming whether your truck uses a standard replacement size or a factory-specific fitment ensures the set arriving at your installer carries the winter traction markings and load ratings your pickup requires.
How should a pickup owner decide between the NEXEN TIRE ROADIAN ATX and the ROADIAN HTX2 for year-round driving?
Choosing between the NEXEN TIRE ROADIAN ATX and the ROADIAN HTX2 comes down to honest accounting of where your truck spends most of its miles over a full four-season cycle. If your weekly routine mixes unpaved job sites, gravel access roads, or trailheads with winter weather, the NEXEN TIRE ROADIAN ATX addresses those varied surfaces, whereas drivers who log nearly all of their mileage on paved highways can look to the ROADIAN HTX2 for year-round road manners.
What should I keep in mind when driving a pickup equipped with NEXEN TIRE ROADIAN ATX or ROADIAN HTX2 tires in freezing weather?
Even when your pickup is outfitted with the NEXEN TIRE ROADIAN ATX or ROADIAN HTX2, no tire eliminates the physics of a heavy vehicle on slick winter pavement. Pairing your tires with proactive cold-morning pressure checks and smooth, gradual inputs on the steering wheel, throttle, and brake pedal gives your truck the best chance of maintaining predictable control when temperatures drop.