2025 INEOS Trucks Tire Fitment Guide

2025 INEOS Trucks vehicles use two tire sizes across the range: 255/70R18 and 265/70R17. Both sizes fit the 2025 INEOS Trucks Grenadier and the 2025 INEOS Trucks Grenadier Quartermaster, and both are radial constructions. The 255/70R18 mounts on an 18-inch wheel, while the 265/70R17 mounts on a 17-inch wheel. For the 265/70R17, the supported rim width range is 7.0 to 9.0 inches.

That means model name alone does not settle the fitment question for 2025 INEOS Trucks. What matters first is which wheel diameter your vehicle actually has. Check the sidewall on the current tire or confirm the wheel size directly before choosing between the two. Once wheel diameter is confirmed, you can narrow your search to the correct size and then compare tread style, load capacity, and sidewall appearance within that size.

On a 2025 INEOS Trucks tire, 255/70R18 is a metric radial size. The 255 is the nominal section width in millimeters, 70 is the aspect ratio, the R means radial construction, and 18 is the wheel diameter in inches. That makes it an 18-inch wheel fitment used on both the Grenadier and Grenadier Quartermaster.

The practical point is that 255/70R18 is not interchangeable with 265/70R17 just because both belong to 2025 INEOS Trucks models. The wheel diameter is different, so the tire must match the wheel first. If your vehicle is already equipped with 18-inch wheels and you want to stay with the same fitment format, this is the size to confirm against the vehicle's current tires or factory wheel package.

On a 2025 INEOS Trucks tire, 265/70R17 is a metric radial size. The 265 is the nominal section width in millimeters, 70 is the aspect ratio, R identifies radial construction, and 17 is the wheel diameter in inches. For 2025 INEOS Trucks, this size is used on both the Grenadier and Grenadier Quartermaster and fits a 17-inch wheel.

The BFGoodrich All-Terrain T/A KO2 offerings in 265/70R17 also show that tires in the same size can differ in load capacity even when the dimensions match. One version carries a 112S service description and another carries 121S, so buyers should compare the tire's intended duty along with the basic size. If your vehicle has 17-inch wheels, this size keeps you in the correct fitment family.

The right choice for a 2025 INEOS Trucks vehicle starts with wheel diameter, not with a preference between two interchangeable tire sizes. The 255/70R18 is for 18-inch wheels, while the 265/70R17 is for 17-inch wheels. Both sizes are used on both the Grenadier and Grenadier Quartermaster, and both are radial constructions, so this is not a bias-ply-versus-radial decision.

If your vehicle still wears its present wheel set, read the size directly from the sidewall and match it exactly. If the wheels were changed by a previous owner, confirm the actual wheel diameter before moving further. After that, compare available products within your correct size for load capacity, sidewall appearance, and the kind of driving you do, whether that is everyday use, trail travel, or heavier-duty work.

Sidewall appearance can vary by size and product line for 2025 INEOS Trucks tires. In 265/70R17, BFGoodrich offers the All-Terrain T/A KO2 with an RWL sidewall, meaning outlined white letters. That gives the tire a more traditional off-road visual character than a plain blackwall would, while staying within a modern radial all-terrain design.

For many buyers, sidewall style is part of the vehicle's overall look as much as the tread itself. A white-letter sidewall suits the rugged, heritage-inspired personality of the Grenadier family, but some owners may prefer a more understated appearance if other products in their size offer it. Once your wheel diameter and tire size are confirmed, sidewall styling becomes an easy way to refine the final choice without changing basic fitment.

BFGoodrich makes 265/70R17 tires for 2025 INEOS Trucks vehicles, with two versions of the All-Terrain T/A KO2 available in that size. Both are radial all-terrain products with RWL sidewalls, but they differ in service description and load capacity. That gives 2025 INEOS Trucks owners at least one well-established off-road brand choice within the 17-inch fitment.

Brand matters most after the correct size is settled. A buyer comparing products for trail use, overlanding, or heavier cargo duty should look past the name alone and review the tire's load rating, pressure rating, and sidewall style. On a vehicle as purpose-built as 2025 INEOS Trucks, matching the tire's intended duty to the way the vehicle is actually used is usually more important than chasing a brand name by itself.

Rim width guidance is available for 2025 INEOS Trucks in 265/70R17, where the supported range is 7.0 to 9.0 inches on a 17-inch diameter wheel. That range applies to the BFGoodrich All-Terrain T/A KO2 products offered in that size. The other year-make size, 255/70R18, is an 18-inch fitment, so wheel diameter still needs to match even when comparing two sizes used by the same models.

Rim width matters because it influences how the tire sits on the wheel and how the sidewall behaves under load and at road pressure. Before moving to any replacement tire, confirm both the wheel diameter and the wheel width on the vehicle. Staying within the tire maker's approved rim-width range is the safest way to preserve proper bead seating, tread profile, and overall handling consistency.

The available 265/70R17 products for 2025 INEOS Trucks do not use tube-type markings, and they are modern radial all-terrain tires intended for contemporary wheel applications. Nothing in the size or service descriptions points toward a tube-type collector fitment. That places 2025 INEOS Trucks in a very different category from vintage tube-type applications.

Even so, the wheel itself still matters. If a wheel has been changed from original specifications or is part of a specialty off-road setup, confirm whether the wheel is intended for tubeless use and inspect the valve stem condition at the same time. Modern utility vehicles depend on an airtight wheel-and-valve assembly, so the condition of the rim and stem is just as important as the tire itself.

Original 2025 INEOS Trucks wheels cannot be assumed to accept both tire sizes, because the two fitments use different wheel diameters. The 265/70R17 requires a 17-inch wheel, while the 255/70R18 requires an 18-inch wheel. Both sizes belong to both the Grenadier and Grenadier Quartermaster, but they are not cross-compatible on the same wheel diameter.

That means owners should avoid treating the two sizes as simple alternatives without checking the hardware first. If you are replacing tires on the wheels already on the vehicle, match the existing sidewall size exactly unless you have separately confirmed a wheel change. If you are purchasing an extra set of wheels for seasonal or off-road use, verify both diameter and approved width before selecting the companion tire size.

A 2025 INEOS Trucks vehicle should be stored with the tires clean, properly inflated, and protected from direct sunlight, standing moisture, and ozone sources such as electric motors, generators, and welders. Modern radial tires tolerate idle periods better than older bias-ply designs, but they still age from heat, UV exposure, and long stationary loads. If the vehicle will sit for an extended period, moving it occasionally helps change the contact patch.

Long-term storage is easier on the tires when the vehicle is kept on a cool, dry surface and checked regularly for pressure loss. Some owners use stands to reduce sustained load during very long storage intervals, but the suspension and frame should be supported correctly if that route is chosen. Before returning the vehicle to service, inspect the sidewalls, tread, and valve stems rather than assuming a low-mileage tire is automatically ready to go.

Tires on a 2025 INEOS Trucks vehicle should be judged by age and condition as much as by tread wear. A practical collector and specialty-vehicle rule is to begin close evaluation around five to seven years and to consider replacement around the ten-year mark, even if tread depth still looks usable. The DOT date code on the sidewall is the quickest way to determine the tire's age.

Usage pattern matters because many adventure and specialty vehicles accumulate miles slowly, and age can become the limiting factor before wear does. Heat cycles, off-road use, prolonged outdoor parking, and underinflation can all shorten usable life. If your 2025 INEOS Trucks sees mixed road and trail duty, inspect for cuts, puncture repairs, and sidewall stress in addition to watching simple tread depth and calendar age.

Tires on a 2025 INEOS Trucks vehicle deserve a quick inspection before every drive and a more thorough check before any longer outing. Look for cracking, bulges, punctures, uneven wear, embedded debris, and any sign that the tire is losing pressure between uses. On a vehicle that may see gravel, trail work, or heavy loads, shoulder and sidewall inspection is especially important.

Routine inspection helps catch small problems before they become roadside failures or trail-ending issues. Make pressure checks part of the same habit, and compare all four tires plus the spare if one is carried for matching service. If the vehicle has been parked for a while, roll it forward and backward enough to inspect the full circumference of each tire rather than checking only the portion you can see at a glance.

2025 INEOS Trucks tires can be suitable for highway driving when the correct size, load specification, and operating condition are matched to the vehicle. The available 265/70R17 BFGoodrich All-Terrain T/A KO2 options carry an S speed rating, which corresponds to a 112 mph ceiling. Both year-make sizes are modern radial constructions, so they are fundamentally aligned with contemporary road use rather than vintage driving limitations.

Real-world safety depends on more than the speed letter alone. Tire pressure, load carried, alignment, suspension condition, and the vehicle's intended use all matter, especially on a truck built for mixed on-road and off-road service. For highway travel, choose a tire whose service description fits how the vehicle is loaded, then keep pressures correct and inspect the tires regularly rather than assuming any tire in the right size is automatically equivalent.

Inflation pressure for 2025 INEOS Trucks should start with the factory vehicle recommendation, then be checked against the tire's own sidewall rating and service description. In 265/70R17, one BFGoodrich All-Terrain T/A KO2 carries a maximum load of 2,470 pounds at 50 psi, while another carries 3,195 pounds at 80 psi. Those figures are tied to the specific tire version and should not be transferred automatically from one product to another.

The important distinction is that maximum sidewall pressure is not always the same as the vehicle's normal operating pressure. Use the original vehicle placard or owner's manual for baseline inflation, especially if the truck is unloaded, then adjust only within the tire maker's guidelines when duty changes. If you move between daily driving, towing, and off-pavement travel, review pressure strategy with the tire manufacturer or a qualified shop familiar with modern 4x4 applications.

Before a longer drive in a 2025 INEOS Trucks vehicle, inspect each tire for cracking, cuts, punctures, bulges, uneven wear, and proper inflation. Check the sidewall to confirm that all four road tires match in size and service type, and inspect the spare as well if the vehicle carries one. Valve stems should be secure and free of damage, especially on a truck that may have seen off-road use.

A longer-trip inspection should also include the broader mechanical systems that can affect tire life and road safety, such as alignment, steering components, brakes, and suspension condition. Trucks used for cargo, towing, or trail work deserve an extra look at load distribution and any signs of rubbing or contact in the wheel wells. Catching those issues before departure is far easier than diagnosing heat buildup or uneven wear once the trip is underway.