The 2009 Infiniti Trucks FX35 blended sport-utility practicality with the coupe-like styling and road-focused character that helped define Infiniti’s performance crossover approach in the late 2000s. Buyers often gravitate to this generation for its sharp stance and more driver-oriented feel than many midsize SUVs of the period. Tire selection starts with one important fact: the 2009 Infiniti Trucks FX35 uses radial tires, but it was fitted with two primary sizes, 265/50R20 and 265/60R18. That means the real choice begins with confirming which wheel diameter is on the vehicle, then comparing tires that match the intended look, ride, and everyday road use.
Which Tire Size Is Right for The 2009 Infiniti Trucks FX35
The 2009 Infiniti Trucks FX35 uses two primary tire sizes, and both are radial fitments. The key difference is wheel diameter: one size fits 20-inch rims and the other fits 18-inch rims. Since both AWD and RWD versions can use either size, the first step is confirming which wheels are actually on the vehicle before comparing tire choices.
The size 265/50R20 indicates a metric radial tire with a 265-millimeter section width, a 50-series aspect ratio, and fitment for a 20-inch rim. On the 2009 Infiniti Trucks FX35, this size supports the larger-wheel setup and preserves the vehicle’s intended relationship between tire height and wheel diameter. Its overall diameter stays close to the 18-inch fitment, so the main distinction is the wheel package rather than a radically different tire height. This is the size to evaluate when the FX35 is equipped with 20-inch wheels and a more aggressive wheel-to-tire visual balance.
The size 265/60R18 is a metric radial with the same 265-millimeter section width, but it uses a 60-series aspect ratio on an 18-inch rim. For the 2009 Infiniti Trucks FX35, that makes it the correct primary size for the 18-inch wheel setup while keeping an overall diameter very close to the 20-inch package. The taller sidewall changes the tire’s proportions more than its basic footprint. This is the size to use when the vehicle is on 18-inch wheels and you want to match the fitment intended for that rim diameter.
Tire fitment is straightforward across the covered 2009 Infiniti Trucks FX35 sub-models because both AWD and RWD versions use the same two primary radial sizes. The important step is not choosing between drivetrains, but confirming whether the vehicle is wearing 18-inch or 20-inch wheels.
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2009 Infiniti Trucks FX35 (AWD)
The 2009 Infiniti Trucks FX35 (AWD) uses the same two primary radial tire sizes found across this model line. Selection comes down to confirming whether the AWD vehicle has 18-inch or 20-inch wheels, then choosing a tire that matches that wheel diameter and the way the vehicle is actually used.
The 2009 Infiniti Trucks FX35 (RWD) shares the same pair of radial tire sizes as the AWD version. That means the main fitment check is wheel diameter rather than drivetrain, especially on vehicles that may have had wheel changes or replacement tire packages over time.
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
Common questions for the 2009 Infiniti Trucks FX35 usually center on the two tire sizes, 18-inch versus 20-inch wheel fitment, and how to choose the right tire once the vehicle’s actual wheel setup has been confirmed.
Tire Size & Fitment
What tire size fits a 2009 Infiniti Trucks FX35?
The 2009 Infiniti Trucks FX35 uses two primary tire sizes: 265/50R20 and 265/60R18. Both are radial tires, and both AWD and RWD versions can use either size depending on the wheel package installed on the vehicle.
The important detail is that these sizes do not fit the same rim diameter. A 265/50R20 belongs on a 20-inch wheel, while a 265/60R18 belongs on an 18-inch wheel. Before choosing tires, confirm the wheel size currently on the FX35, especially if it has had aftermarket wheels or a prior owner changed the setup.
What size rim does a 2009 Infiniti Trucks FX35 use?
A 2009 Infiniti Trucks FX35 can use either an 18-inch rim or a 20-inch rim. The 265/60R18 tire fits the 18-inch wheel setup, and the 265/50R20 tire fits the 20-inch wheel setup.
Since both rim diameters were used on this model, checking the actual wheel on the vehicle matters more than assuming fitment from drivetrain alone. Read the existing tire size, verify the wheel diameter stamped on the rim if needed, and make sure any replacement tire matches that diameter before comparing other tire features.
Do all 2009 Infiniti Trucks FX35 sub-models use the same tire size?
AWD and RWD versions of the 2009 Infiniti Trucks FX35 share the same two primary tire sizes: 265/50R20 and 265/60R18. In other words, fitment does not split by drivetrain the way some buyers expect.
That does not mean every FX35 should use either size without checking the wheels first. The two sizes correspond to different rim diameters, so the deciding factor is the wheel package on the specific vehicle. A quick inspection of the current tires or wheels will point you to the correct size group right away.
Choosing the Right Tire
What should I consider when choosing a tire for a 2009 Infiniti Trucks FX35?
Start with the correct primary size for the wheel already on the vehicle: 265/50R20 for 20-inch rims or 265/60R18 for 18-inch rims. The 2009 Infiniti Trucks FX35 uses radial tires in both cases, so the first decision is wheel diameter rather than switching between different construction types.
After that, compare tires based on how the FX35 is driven and what condition the vehicle is in. Daily road use, seasonal conditions, ride expectations, and tread design all matter, but they only matter after the size is correct. It also helps to inspect wheel width, suspension condition, and clearance if the vehicle has been modified.
How do I choose between the available 265/50R20 and 265/60R18 tires for a 2009 Infiniti Trucks FX35?
These are not two interchangeable shopping categories for the same wheel. The 265/50R20 belongs to the 20-inch setup, while the 265/60R18 belongs to the 18-inch setup. Each size keeps the FX35 within the fitment intended for that wheel diameter.
Once the wheel size is confirmed, compare tires within that one size rather than across both. That keeps the search focused on tires built for the wheel you actually have. It also avoids mixing tire and wheel combinations that could create fitment issues, especially on vehicles with replacement wheels or altered suspension height.
Should I keep the original wheel diameter when replacing tires on a 2009 Infiniti Trucks FX35?
Keeping the existing wheel diameter is usually the simplest path because the 2009 Infiniti Trucks FX35 already has two established primary fitments: 18-inch wheels with 265/60R18 tires and 20-inch wheels with 265/50R20 tires. Replacing tires within the current wheel setup avoids unnecessary fitment complications.
Changing wheel diameter means more than choosing a different tire size. It can affect wheel fit, clearance, and the overall relationship between the tire and body. If the FX35 already has the wheels you want to keep, matching the correct size to that diameter is the most straightforward way to stay focused on proper fitment.
Restoration & Appearance
Does correct tire fitment matter for a 2009 Infiniti Trucks FX35 restoration or preservation project?
Yes. Even though the 2009 Infiniti Trucks FX35 is a newer vehicle than a traditional collector car, correct tire fitment still matters for preserving its intended stance and overall presentation. The vehicle was fitted with either 265/50R20 or 265/60R18 radial tires, depending on the wheel package.
Using the right size for the actual wheel diameter helps the FX35 look proportionate and avoids a mismatched wheel-and-tire relationship. For owners aiming to keep the vehicle close to its original character, it makes sense to confirm the wheel setup first, then choose a tire that supports that same visual balance rather than improvising with an unrelated size.
Which tire fitment suits the original look of a 2009 Infiniti Trucks FX35?
The original look starts with matching the tire size to the wheel diameter already associated with the vehicle. On a 2009 Infiniti Trucks FX35, that means 265/50R20 with 20-inch wheels or 265/60R18 with 18-inch wheels. Both are proper primary radial fitments for this model.
Appearance changes noticeably when tire and wheel proportions drift away from those established combinations. A larger wheel with too much sidewall or a smaller wheel with the wrong tire profile can alter the FX35’s stance. Owners focused on preservation should verify the existing wheel package and keep the tire size aligned with that setup.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2009 Infiniti Trucks FX35?
Yes. Modifications can change how either primary tire size works on a 2009 Infiniti Trucks FX35. The vehicle uses 265/50R20 or 265/60R18 depending on wheel diameter, but aftermarket wheels, altered offsets, suspension lowering, or other changes can affect clearance even when the tire size itself seems familiar.
A modified FX35 should be checked for wheel width, inner and outer clearance, and steering travel before replacement tires are chosen. Tire size alone does not tell the whole story once the original wheel and suspension relationship has been changed. A visual inspection at full lock and under compression can help prevent rubbing issues.
What should I inspect before driving a 2009 Infiniti Trucks FX35 on new tires?
Before putting a 2009 Infiniti Trucks FX35 into regular road use on new tires, inspect the wheels for damage, confirm the tire size matches the wheel diameter, and check that all four tires are properly seated and inflated. It is also smart to look over alignment-related wear items if the previous tires showed uneven wear.
Road testing should include listening for rubbing, vibration, or pull, especially if the vehicle has replacement wheels or suspension changes. Lug hardware should be torqued correctly, and the spare condition deserves attention too. A clean first inspection helps confirm that the new tires are working with the vehicle rather than simply mounted on it.
How often should tires on a 2009 Infiniti Trucks FX35 be inspected?
Tires on a 2009 Infiniti Trucks FX35 should be inspected regularly rather than waiting for obvious problems. Check them for pressure loss, uneven tread wear, cuts, bulges, and sidewall cracking, and pay extra attention if the vehicle sits for long periods or is driven only occasionally.
Routine inspection matters because both FX35 tire sizes carry a relatively wide footprint, and wear issues can show up quickly if alignment or inflation is off. Looking them over before longer drives is especially worthwhile. Catching air loss, aging, or shoulder wear early is much easier than diagnosing a ride or handling problem later.
