The 2011 Mazda Trucks CX-9 came from a period when three-row crossovers were expected to balance family space with a more responsive, car-based driving feel. Its styling and road manners gave it a more sporting character than many larger SUVs of the same era, which makes tire fitment especially important to how the vehicle looks and drives. This model uses radial tires, but the exact size depends on trim, with either 245/50R20 or 245/60R18. That puts the focus on confirming the sub-model and wheel diameter first. Once that is settled, the decision becomes choosing the right overall tire setup for appearance, road use, and wheel compatibility.
Which Tire Size Is Right for The 2011 Mazda Trucks CX-9
The 2011 Mazda Trucks CX-9 uses two primary tire sizes, and the difference comes down to sub-model and wheel diameter. Grand Touring models use 245/50R20, while Sport and Touring models use 245/60R18, so the first step is confirming the exact trim and whether the vehicle still has its correct 18-inch or 20-inch wheels before selecting tires.
A 245/50R20 tire uses a 245-millimeter section width, a 50-series aspect ratio, radial construction, and a 20-inch rim diameter. On the 2011 Mazda Trucks CX-9, this size is tied to a specific sub-model and supports the larger-wheel setup used on that version of the vehicle. The shorter sidewall gives this size a distinctly modern metric-radial profile that differs visually from the 18-inch fitment. This is the size to evaluate when the CX-9 has 20-inch wheels and the goal is to keep the fitment aligned with that trim's intended wheel package.
A 245/60R18 tire also uses a 245-millimeter section width and radial construction, but it pairs that width with a 60-series profile and an 18-inch rim diameter. On the 2011 Mazda Trucks CX-9, this size applies to the Sport and Touring sub-models rather than the 20-inch Grand Touring setup. Its sizing format is familiar to modern buyers, but the key detail is still the wheel diameter because 18-inch and 20-inch fitments are not interchangeable. This is the correct size to evaluate when the vehicle retains the 18-inch wheel package used on those trims.
Sub-model fitment matters on the 2011 Mazda Trucks CX-9 because tire size changes with trim. Grand Touring uses a different wheel and tire package than Sport and Touring, so identifying the exact sub-model is the cleanest way to avoid selecting the wrong rim diameter.
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2011 Mazda Trucks CX-9 Grand Touring
The 2011 Mazda Trucks CX-9 Grand Touring uses the 245/50R20 radial size, which matches the model's 20-inch wheel package. Tire selection starts with confirming that the vehicle still has the correct wheel diameter, then choosing a tire in that size that suits the way the CX-9 is driven and maintained.
The 2011 Mazda Trucks CX-9 Sport uses the 245/60R18 radial size rather than the 20-inch Grand Touring fitment. That makes wheel-diameter confirmation important, especially on vehicles that may have seen later wheel changes or replacement wheels during their service life.
The 2011 Mazda Trucks CX-9 Touring also uses the 245/60R18 radial size on an 18-inch wheel. Tire selection for this sub-model is more straightforward as long as the current wheel setup matches that fitment and there have been no changes that affect clearance or compatibility.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Frequently Asked Questions
The most common tire questions for the 2011 Mazda Trucks CX-9 center on trim-specific sizing, 18-inch versus 20-inch wheel fitment, and what to inspect before putting the vehicle back into regular road use.
Tire Size & Fitment
What tire size fits a 2011 Mazda Trucks CX-9?
The 2011 Mazda Trucks CX-9 uses two tire sizes: 245/50R20 and 245/60R18. Grand Touring models use 245/50R20, while Sport and Touring models use 245/60R18, and both are radial tire fitments.
The important step is matching the tire size to the actual sub-model and wheel diameter on the vehicle. A CX-9 that has had wheels changed over time may not still be running its original trim-specific setup, so checking the current wheels before choosing tires helps prevent ordering the wrong size.
What size rim does a 2011 Mazda Trucks CX-9 use?
A 2011 Mazda Trucks CX-9 uses either an 18-inch or 20-inch rim, depending on sub-model. The 245/60R18 fitment belongs to Sport and Touring models, while the 245/50R20 fitment belongs to the Grand Touring.
Rim diameter is the first fitment point to confirm because an 18-inch tire cannot be mounted on a 20-inch wheel, and a 20-inch tire cannot be mounted on an 18-inch wheel. Looking at the tire sidewall and verifying the trim level is the quickest way to narrow the selection before comparing any tire choices.
Do all 2011 Mazda Trucks CX-9 sub-models use the same tire size?
No. The 2011 Mazda Trucks CX-9 uses different tire sizes across its sub-models. Grand Touring models use 245/50R20, while Sport and Touring models use 245/60R18.
That difference means tire selection should start with the exact trim, not just the year and model name. It is also worth checking whether the vehicle still has its original wheel package, since replacement wheels or take-off wheels from another CX-9 trim can change which tire size is actually needed.
Choosing the Right Tire
What should I consider when choosing a tire for a 2011 Mazda Trucks CX-9?
Start with the correct trim-specific size: 245/50R20 for Grand Touring or 245/60R18 for Sport and Touring. After size is confirmed, the next priorities are matching the tire to the wheel diameter on the vehicle and choosing a setup that suits how the CX-9 is used.
A crossover that sees daily road use, longer highway trips, or mostly local driving may lead to different tire priorities, but the fitment basics stay the same. Confirm the current wheels, inspect for past modifications, and make sure the selected tire matches the vehicle's actual rim size and overall setup before installation.
How do I choose between the available 245/60R18 and 245/50R20 tires for a 2011 Mazda Trucks CX-9?
The choice is not between 245/60R18 and 245/50R20 as interchangeable options; it is between the correct size for the vehicle's trim and wheel package. Sport and Touring models use 245/60R18, while Grand Touring uses 245/50R20.
Once the correct size is established, compare tires within that size rather than across both fitments. A vehicle that has changed hands several times or received replacement wheels deserves an extra look at the wheel diameter and present setup, since that matters more than the badge on the liftgate when selecting tires.
How do I choose between the available tires for a 2011 Mazda Trucks CX-9?
Choosing tires for a 2011 Mazda Trucks CX-9 starts with correct size and wheel diameter, then moves to the vehicle's intended use. The CX-9 uses radial tires, but the key distinction is whether the vehicle needs the 18-inch 245/60R18 fitment or the 20-inch 245/50R20 fitment.
After that, look at the condition and purpose of the vehicle itself. A regularly driven family crossover may call for a different selection approach than a lower-mileage vehicle kept as a second car, but either way the tire should match the current wheels, maintain proper clearance, and suit the road use expected from the vehicle.
Restoration & Appearance
Does correct tire fitment matter for a 2011 Mazda Trucks CX-9 restoration?
Yes. Even on a newer collector-era or preservation-minded vehicle, correct tire fitment affects stance, proportions, and how naturally the wheel package suits the body. On the 2011 Mazda Trucks CX-9, that means matching 245/50R20 to Grand Touring and 245/60R18 to Sport or Touring when preserving trim-specific presentation.
Appearance is only part of the equation, since the wheel diameter must also match the tire size. A careful restoration or preservation project should verify the trim level, confirm the current wheels are appropriate for that trim, and avoid assuming that any CX-9 wheel-and-tire package is automatically correct for every 2011 sub-model.
How does tire size affect the appearance of a 2011 Mazda Trucks CX-9?
Tire size changes the visual balance of the 2011 Mazda Trucks CX-9 because the model uses either a 20-inch wheel with 245/50R20 tires or an 18-inch wheel with 245/60R18 tires. Those two fitments create different sidewall proportions even though they are close in overall diameter.
That matters when the goal is to keep the vehicle looking appropriate for its trim level rather than simply mounting whatever fits the current wheels. Checking the sub-model and wheel setup helps maintain the intended look, especially on cleaner examples where factory-style proportions are part of the vehicle's appeal.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2011 Mazda Trucks CX-9?
Yes. Wheel changes, suspension alterations, or body modifications can affect tire fitment on a 2011 Mazda Trucks CX-9 even when the tire size appears close to stock. This matters because the CX-9 already uses two different factory wheel diameters depending on trim.
A vehicle with aftermarket wheels should be checked for actual rim diameter and general compatibility before replacing tires. Clearance at the fenders and suspension should also be reviewed, especially if the ride height has changed, because trim-based factory sizing does not automatically account for later modifications.
What should I inspect before driving a 2011 Mazda Trucks CX-9 on new tires?
Before driving a 2011 Mazda Trucks CX-9 on new tires, inspect the wheels for the correct diameter, check that the tire size matches the vehicle's trim, and look over the suspension and steering for obvious wear. Proper inflation and secure mounting should also be confirmed before regular road use.
It also helps to inspect the vehicle's existing setup for uneven tire wear, rubbing marks, or signs that the alignment needs attention. A quick review of tread clearance and general wheel condition is especially worthwhile on a used CX-9, since previous repairs or wheel changes can affect how well a fresh set of tires performs.
How often should tires on a 2011 Mazda Trucks CX-9 be inspected?
Tires on a 2011 Mazda Trucks CX-9 should be inspected regularly rather than waiting for obvious problems. Look at tread condition, air pressure, sidewall cracking, cuts, bulges, and any uneven wear pattern that might point to alignment, suspension, or wheel issues.
Routine inspection becomes even more important on vehicles that are driven less often, parked for long periods, or used mainly for short trips. A CX-9 that sees irregular use can still age its tires, so checking condition before longer drives and keeping inflation at the proper level are simple steps that support safer road use.
