In 2009, Mercury Trucks balanced compact crossover utility and traditional SUV presence with the Mariner and Mountaineer. That gave 2009 Mercury Trucks buyers two distinct tire stories: the lighter, more urban-focused Mariner and the larger, body-on-frame Mountaineer with bigger wheel packages. Across these two models, five tire sizes appear, and they are model-specific rather than shared across the full range. The practical first step is to confirm whether you have a Mariner or a Mountaineer, then match the correct rim diameter and tire size before narrowing the choice by sidewall style or intended driving use.
Which Tire Size Is Right for Your 2009 Mercury Trucks
Five tire sizes are used on 2009 Mercury Trucks vehicles, and they vary by model rather than carrying across the whole lineup. Because these sizes span 16-, 17-, 18-, and 20-inch wheels, the real decision starts with confirming your model and rim diameter first. Understanding that distinction before choosing a product saves time and helps you match the right tire to the right vehicle.
Year(s): 2009|Fit(s): Mariner|Construction: Radial|Rim: 16 in
235/70R16 is a metric radial size with a 235-millimeter section width, a 70-series aspect ratio, and fitment for a 16-inch wheel. This Mariner-specific size is available from BFGoodrich, American Classic, and Coker Classic, with RWL and wide whitewall sidewall styles and S-rated products reaching 112 mph where speed marking is present. It suits owners who want to stay with the Mariner's 16-inch wheel package while choosing between a more truck-oriented look and a more vintage-inspired whitewall appearance.
Year(s): 2009|Fit(s): Mariner|Construction: Radial|Rim: 17 in
225/65R17 is a metric radial size with a 225-millimeter section width, a 65-series aspect ratio, and fitment for a 17-inch wheel. This size is specific to Mariner models on 17-inch wheels and is available from BFGoodrich with an RBL sidewall and an S speed rating, which carries a 112 mph ceiling. It is the right choice for a Mariner already equipped for this wheel diameter, especially if you want to stay with a modern light-truck-style radial.
Year(s): 2009|Fit(s): Mountaineer|Construction: Radial|Rim: 17 in
245/65R17 is a metric radial size with a 245-millimeter section width, a 65-series aspect ratio, and fitment for a 17-inch wheel. This Mountaineer-specific size is available from BFGoodrich with an RWL sidewall and an S speed rating, which corresponds to 112 mph. It fits buyers keeping a Mountaineer on its 17-inch wheel setup and looking for a radial with a more rugged visual character.
Year(s): 2009|Fit(s): Mountaineer|Construction: Radial|Rim: 18-in rim
235/65R18 is a metric radial size with a 235-millimeter section width, a 65-series aspect ratio, and fitment for an 18-inch wheel. This size belongs to certain Mountaineer applications rather than the full 2009 Mercury Trucks range. It is the size to confirm when your Mountaineer carries an 18-inch factory wheel package, since wheel diameter alone separates it from the 17- and 20-inch options.
Year(s): 2009|Fit(s): Mountaineer|Construction: Radial|Rim: 20-in rim
255/50R20 is a metric radial size with a 255-millimeter section width, a 50-series aspect ratio, and fitment for a 20-inch wheel. This is a Mountaineer-only size and represents the largest wheel package used across 2009 Mercury Trucks models. It is the one to confirm when appearance and factory wheel diameter point to a 20-inch setup rather than the smaller Mountaineer fitments.
Two Mercury Trucks models are covered for 2009. They do not share the same tire sizes, so identifying whether you have a Mariner or a Mountaineer is more important here than simply knowing the year and make. Select your model below to narrow the correct size, fitment history, and product options.
2009 Mercury Trucks Mariner
The 2009 Mercury Trucks Mariner was Mercury's compact crossover, sharing its basic mission with the Ford Escape but carrying a more upscale Mercury presentation. Its tire fitments mount on 16-inch or 17-inch wheels, so wheel diameter is the key detail to verify before moving on to tread style or sidewall appearance.
Associated Tire Sizes:
235/70R16 — radial, whitewall or truck-style options
The 2009 Mercury Trucks Mountaineer was the larger SUV in the Mercury showroom, carrying the traditional American midsize SUV formula with a more premium trim approach. Its tire fitments span 17-inch, 18-inch, and 20-inch wheels, so matching the existing wheel package is essential before comparing tire choices.
Five products are available across five tire sizes for 2009 Mercury Trucks vehicles. The 235/70R16 has three radial choices from BFGoodrich, American Classic, and Coker Classic with RWL and wide whitewall styles, while 225/65R17 and 245/65R17 each have one BFGoodrich radial option. Confirm your exact size and wheel diameter before selecting.
These answers focus on the model-specific tire sizes used across 2009 Mercury Trucks, what the metric codes mean, which sidewall styles and brands are available, and what to check before regular driving or long periods of storage.
Size Basics & Fitment
What tire sizes fit 2009 Mercury Trucks vehicles?
2009 Mercury Trucks vehicles use five tire sizes across two models. The Mariner uses 235/70R16 or 225/65R17, while the Mountaineer uses 245/65R17, 235/65R18, or 255/50R20. Where product fitment details are available, 235/70R16 works with 16-inch wheels and rim widths from 6.0 to 8.5 inches depending on the tire, 225/65R17 uses a 17-inch wheel with a 6.0 to 8.0 inch rim width range, and 245/65R17 uses a 17-inch wheel with a 7.0 to 8.0 inch rim width range.
The key point is that 2009 Mercury Trucks size selection is model-specific, not shared across the whole Mercury Trucks range. Start by confirming whether you have a Mariner or Mountaineer, then verify the wheel diameter already on the vehicle. That prevents confusion between the two 17-inch sizes, which fit different models and are not interchangeable simply because they share the same rim diameter.
What does 235/70R16 mean on a 2009 Mercury Trucks tire?
On a 2009 Mercury Trucks Mariner, 235/70R16 is a metric radial tire size. The 235 is the nominal section width in millimeters, 70 is the aspect ratio, R means radial construction, and 16 is the wheel diameter in inches. This size appears on Mariner applications that use a 16-inch wheel package, and it is available in both truck-style raised white letter form and wide whitewall radial form.
That mix of sidewall styles makes 235/70R16 one of the more visually flexible 2009 Mercury Trucks sizes. A BFGoodrich KO2 gives the Mariner a more utility-oriented look, while American Classic and Coker Classic wide whitewalls shift the presentation in a more custom or retro direction. Confirm the wheel diameter first, then choose the sidewall style that best matches how your Mariner is finished and used.
Do all 2009 Mercury Trucks models use the same tire size?
No, 2009 Mercury Trucks models do not use the same tire size. The Mariner uses 235/70R16 or 225/65R17, while the Mountaineer uses 245/65R17, 235/65R18, or 255/50R20. Even where two sizes share a 17-inch wheel diameter, they belong to different models and have different section widths and aspect ratios.
That means year and make alone are not enough to choose correctly for 2009 Mercury Trucks. A Mariner owner needs to confirm whether the vehicle is on 16-inch or 17-inch wheels, and a Mountaineer owner needs to identify whether the truck has 17-, 18-, or 20-inch wheels. Checking the sidewall of the current tire and the actual wheel diameter is usually the quickest way to avoid a costly mismatch.
Buying the Right Tire
What sidewall styles are available for 2009 Mercury Trucks tires?
Sidewall style varies quite a bit across 2009 Mercury Trucks tire options. The 235/70R16 size for the Mariner is available with raised white letters and with a wide whitewall, while 225/65R17 appears in black sidewall form and 245/65R17 appears with raised white letters. That means the Mariner's 16-inch fitment offers the broadest visual range among the sizes that currently have product coverage.
For a 2009 Mercury Trucks owner, sidewall choice is mostly about appearance rather than basic fitment. Raised white letters lean toward an SUV or light-truck look, black sidewalls keep a more understated factory-style presentation, and a wide whitewall creates a far more stylized custom look than Mercury would have worn in ordinary late-2000s showroom trim. Choose the look that matches the vehicle's overall theme after confirming the correct size.
What brands make tires for 2009 Mercury Trucks vehicles?
Three brands currently cover 2009 Mercury Trucks sizes with available products: BFGoodrich, American Classic, and Coker Classic. BFGoodrich covers 235/70R16, 225/65R17, and 245/65R17, while American Classic and Coker Classic appear in 235/70R16. That makes the Mariner's 16-inch fitment the broadest area for brand and style choice among the available options.
Brand choice on 2009 Mercury Trucks often goes hand in hand with the visual direction of the vehicle. BFGoodrich leans toward a more utility-oriented modern radial look, especially in KO2 form, while American Classic and Coker Classic bring in wide whitewall styling for owners building something more distinctive. Once you have the right size pinned down, comparing brand character becomes much easier and more meaningful.
What is the difference between the American Classic and Coker Classic 235/70R16 tires for 2009 Mercury Trucks?
For a 2009 Mercury Trucks Mariner in 235/70R16, both American Classic and Coker Classic offer radial tires with a 2.375-inch wide whitewall. The American Classic carries a maximum load of 1,984 pounds at 35 psi, weighs 30 pounds, and fits rim widths from 6.00 to 8.50 inches. The Coker Classic Star Series carries a maximum load of 2,271 pounds at 32 psi and weighs 29.1 pounds.
The practical difference is that both deliver the same broad whitewall visual effect, but they are not identical in load and wheel-range details. If your priority is dialing in fitment against the exact wheel width on your Mariner, the stated rim-width range becomes especially important. If appearance is the main goal, either one keeps the same general sidewall theme while you verify the rest of the vehicle's wheel setup.
Fitting & Setup
What rim width do 2009 Mercury Trucks tires require?
Rim width guidance is available for several 2009 Mercury Trucks sizes. The 235/70R16 size fits 16-inch wheels and spans 6.0 to 7.5 inches in BFGoodrich form and 6.00 to 8.50 inches in American Classic form. The 225/65R17 size fits 17-inch wheels with a 6.0 to 8.0 inch rim width range, and the 245/65R17 size fits 17-inch wheels with a 7.0 to 8.0 inch rim width range.
That is why the wheel itself matters just as much as the size printed on the sidewall. Two tires with the same rim diameter can still differ in their preferred wheel-width range, especially when one is a more utility-oriented light-truck radial and another is a styling-focused whitewall radial. Measure the wheel or confirm the wheel specification before choosing between products in the same 2009 Mercury Trucks size.
Do 2009 Mercury Trucks tires require inner tubes?
The available 2009 Mercury Trucks products are radial tires without tube-type markings in the size descriptions, so these fitments are best understood as tubeless applications unless the wheel itself requires a different setup. That applies to the 235/70R16, 225/65R17, and 245/65R17 products currently available. No tube-type notation appears in those tire descriptions.
Even so, the wheel condition still matters on a 2009 Mercury Trucks vehicle. A tubeless radial depends on a sound bead seat and a healthy valve stem, so corrosion, wheel damage, or poor sealing can create problems even when the tire size is correct. If the wheels are original and have seen years of service, inspect them carefully before mounting new tires.
Maintenance, Storage & Longevity
How should I store a 2009 Mercury Trucks when the tires are fitted?
A 2009 Mercury Trucks should be stored with the tires clean, properly inflated, and protected from direct sunlight, standing moisture, and ozone-producing equipment such as electric motors, battery chargers, and welders. If the vehicle will sit for long periods, moving it occasionally helps prevent temporary flat-spotting and keeps one part of the tread from carrying the full weight continuously. A clean, cool garage is far better than outdoor storage.
Because 2009 Mercury Trucks fitments here are all radials, they generally recover from short-term flat spotting better than older bias-ply designs, but storage habits still affect tire life. Keep the vehicle on a dry surface, avoid petroleum-based dressings, and inspect sidewalls after every long storage period. If the vehicle is staying parked for a season, support the weight strategy with periodic movement or suitable stands.
How long do tires on a 2009 Mercury Trucks typically last?
On a 2009 Mercury Trucks vehicle, tire age is usually more important than mileage once the truck becomes a lightly used second vehicle or collector-kept SUV. A good rule is to evaluate tires closely once they reach five to seven years of age and to treat around ten years as the point where replacement deserves serious consideration regardless of tread depth. The DOT date code on the sidewall gives the manufacturing week and year.
That matters because plenty of 2009 Mercury Trucks examples spend long periods parked, and low annual mileage can make old tires look younger than they really are. Cracking, hardening, vibration, and pressure loss often become the deciding factors before tread wear does. If the tires came with the vehicle and their age is uncertain at a glance, checking the date code should be one of your first maintenance steps.
How often should tires on a 2009 Mercury Trucks be inspected?
Tires on a 2009 Mercury Trucks should be inspected before every drive, with a more thorough check before any highway trip or weekend outing. Look for sidewall cracking, cuts, bulges, unusual wear, embedded debris, and any sign that pressure is dropping between uses. Valve stems deserve attention too, especially on a vehicle that sits for long intervals.
Regular inspection is especially important because a 2009 Mercury Trucks vehicle may alternate between daily-driver use and long periods of inactivity. That pattern can hide age-related deterioration until the truck is back in service at speed. A quick visual check, a pressure check with a known-good gauge, and a glance at tread wear across the tire will catch most problems before they turn into roadside trouble.
Safety & Road Use
Are 2009 Mercury Trucks tires safe for highway driving?
The available 2009 Mercury Trucks products with visible speed markings carry an S speed rating, which corresponds to a 112 mph ceiling. That includes the BFGoodrich options in 235/70R16, 225/65R17, and 245/65R17. For normal U.S. highway use, that rating is comfortably above legal road speeds, assuming the tires are in good condition and correctly inflated.
Real-world highway safety on a 2009 Mercury Trucks vehicle depends on more than the speed symbol on the sidewall. Tire age, air pressure, alignment, suspension wear, brake condition, and loading all matter, especially on an SUV or crossover platform. If the vehicle has been sitting, treat the first longer drive as a systems check rather than relying on tread depth alone as proof that the tires are road-ready.
What inflation pressure should I use for 2009 Mercury Trucks tires?
Inflation pressure on 2009 Mercury Trucks tires should follow the vehicle placard or owner's manual for normal service, then be checked against the tire's own rated maximum where load information is stated. Available examples include 235/70R16 at 1,985 pounds at 50 psi in BFGoodrich form, 1,984 pounds at 35 psi in American Classic form, and 2,271 pounds at 32 psi in Coker Classic form. The 225/65R17 BFGoodrich is rated at 2,150 pounds at 65 psi, and the 245/65R17 BFGoodrich is rated at 2,405 pounds at 65 psi.
Those figures are load-and-pressure capacities, not a blanket instruction to inflate every 2009 Mercury Trucks tire to the maximum number on the sidewall. Vehicles ride, handle, and wear differently when overinflated for their actual use. Match the tire to the vehicle's recommended pressure for everyday driving, then adjust only within the tire maker's limits and only for a clear reason such as load, towing, or handling evaluation.
What should I check before taking a 2009 Mercury Trucks on a longer drive?
Before taking a 2009 Mercury Trucks on a longer drive, inspect all four tires and the spare for cracking, tread damage, punctures, bulges, and uneven wear. Check cold inflation pressures, confirm the valve stems are sound, and make sure the tire size on the vehicle matches the wheel diameter actually fitted. If the truck has been parked for a long period, listen and feel for vibration during the first few miles.
A longer trip in a 2009 Mercury Trucks also calls for a broader age-appropriate mechanical check. Brakes, cooling system condition, steering feel, and suspension behavior can matter as much as the tires once miles start adding up. The goal is not just having enough tread, but making sure the entire vehicle is ready to carry the tire's load and speed capability with confidence over sustained highway use.
