2010 Infiniti Tire Fitment Guide

2010 Infiniti vehicles use five tire sizes across three model lines: 225/45R19, 225/50R18, 245/40R19, 245/45R18, and 225/55R17. The G37 uses all five depending on wheel package, while the M35 and M45 share 245/40R19 and 245/45R18. Rim diameters span 17, 18, and 19 inches, and the supported rim-width ranges vary by size: 225/55R17 fits 6.0 to 9.0 inches, 225/50R18 fits 6.0 to 8.0, 245/45R18 fits 7.5 to 9.0, 225/45R19 fits 7.0 to 8.5, and 245/40R19 fits 8.0 to 9.5.

That means year and make alone are not enough to choose a tire for a 2010 Infiniti. Start by confirming whether you have a G37, M35, or M45, then check the wheel diameter already on the car before comparing tread style or brand. On a G37 in particular, multiple wheel-and-tire combinations were used, so reading the existing sidewall and verifying the wheel itself is the quickest way to avoid a mismatch.

On a 2010 Infiniti, 225/45R19 is a metric radial tire size. The 225 is the section width in millimeters, 45 is the aspect ratio, the R means radial construction, and 19 is the wheel diameter in inches. Within the 2010 Infiniti range, that size appears on the G37 and uses rim widths from 7.0 to 8.5 inches. Available products in this size carry W and Y speed ratings, depending on the tire selected.

The practical point is that 225/45R19 is not interchangeable with every other 19-inch Infiniti size just because the rim diameter matches. Width and profile have to stay correct for the wheel and the car’s intended fitment. If your G37 already wears 19-inch wheels, confirm that the current size is 225/45R19 rather than 245/40R19 before moving ahead, especially if the car has stagger-free stock-style fitment or changed wheels from a previous owner.

No, 2010 Infiniti models do not all use the same tire size. The M35 and M45 share two sizes, 245/45R18 and 245/40R19, while the G37 can use those same sizes plus three additional fitments: 225/55R17, 225/50R18, and 225/45R19. All five sizes are radial, but they are spread across different wheel diameters and section widths. That mix reflects the difference between the sport-oriented G37 lineup and the larger M-series sedans.

For buyers, that means the model name matters just as much as the year. A 2010 Infiniti G37 owner may need to sort among several factory-style sizes, while an M35 or M45 owner can narrow the search quickly by identifying whether the car has 18- or 19-inch wheels. Once that is settled, you can focus on brand, speed rating, and sidewall appearance without guessing at fitment.

Most 2010 Infiniti tire sizes here are available in Blackwall form, which is the standard modern appearance for the G37, M35, and M45. The exception is 225/55R17, which is also offered in a Wide Whitewall radial. That means 225/45R19, 225/50R18, 245/40R19, and 245/45R18 stay firmly in the modern sport-sedan visual category, while 225/55R17 introduces a more stylized sidewall option.

For a stock-appearing 2010 Infiniti, Blackwall is the natural visual fit. A Wide Whitewall on a 2010 G37 is more of a custom look than a factory-era look, so the right choice depends on whether you want to preserve late-model Infiniti styling or give the car a distinctive personal treatment. Sidewall style does not replace the need to confirm the correct size, wheel diameter, and load or speed rating for the application.

BFGoodrich covers every tire size used on 2010 Infiniti vehicles here, including 225/45R19, 225/50R18, 245/40R19, 245/45R18, and 225/55R17. Nitto also appears in 245/45R18, which is one of the shared sizes used by the G37, M35, and M45. Brand choice is therefore broadest in 245/45R18 and more concentrated in the other four sizes. Every option in this group uses radial construction.

That brand spread matters most if your car uses 245/45R18, since that size offers the widest mix within the 2010 Infiniti range. Owners of the other sizes will be comparing more within the BFGoodrich family, including different g-Force variants and, in 225/55R17, a Silvertown Radial with a very different appearance. The best way to narrow the field is to start with your exact size, then compare speed rating, sidewall style, and wheel-width compatibility.

For a 2010 Infiniti, the BFGoodrich g-Force COMP-2 A/S and BFGoodrich g-Force Phenom T/A overlap in several sizes but differ in load and speed details. In 225/45R19, the COMP-2 A/S carries a 92W rating while the Phenom T/A carries 96Y; in 225/50R18, the COMP-2 A/S is 95W while the Phenom T/A is 99W; in 245/40R19, the COMP-2 A/S is 94W while the Phenom T/A is 98Y; and in 245/45R18, the COMP-2 A/S is 96W while the Phenom T/A is 100Y. Where load figures are published, the Phenom T/A also carries higher stated load capacity in those pairings.

That does not automatically make one the right answer for every 2010 Infiniti, but it does show that speed and load details can change meaningfully within the same size. If you are comparing two BFGoodrich options, match the tire to how the car will be used and verify that the rating aligns with the vehicle’s needs and wheel fitment. It is also worth checking the exact sidewall marking on the tire you are replacing, especially if the car already has a preferred setup.

2010 Infiniti tire fitments span several wheel-width ranges depending on size. The 225/55R17 works with rims from 6.0 to 9.0 inches, 225/50R18 with 6.0 to 8.0 inches, 245/45R18 with 7.5 to 9.0 inches, 225/45R19 with 7.0 to 8.5 inches, and 245/40R19 with 8.0 to 9.5 inches. Those ranges are broad enough to cover more than one wheel design, but they are not interchangeable across every size just because two tires share the same rim diameter.

The smartest check is to confirm both the tire size and the actual wheel width before replacing tires on a 2010 Infiniti, especially if the car has aftermarket wheels or a previous owner changed packages. A 19-inch wheel, for example, may suit either 225/45R19 or 245/40R19 depending on width. Staying inside the tire’s approved wheel-width range helps preserve intended handling, tread shape, and sidewall behavior.

These 2010 Infiniti tires are modern radial fitments and do not carry tube-type markings in the available product range. The sidewall markings shown for these sizes use contemporary metric radial notation with W or Y speed ratings and, in some cases, XL markings, which fits normal tubeless passenger-car practice. That applies across the G37, M35, and M45 sizes covered here.

Even so, the wheel itself still matters. If a 2010 Infiniti is running factory-style late-model wheels in sound condition, tube use is generally not part of the equation, but damaged bead seats, corrosion, or nonstandard wheel changes can create sealing issues that need attention. Confirm the condition of the rim, the valve stem, and the exact sidewall marking on the tire before installation rather than assuming every wheel on the car is still configured as originally intended.

A 2010 Infiniti should be stored in a cool, dry, dark space with the tires kept away from direct sunlight, electric motors, welders, battery chargers, and other ozone-producing equipment. Proper inflation before storage matters, and the car benefits from being moved periodically so the tires do not sit in one position for months at a time. Because every size here is radial, long static parking is usually less prone to severe flat-spotting than older bias-ply tires, but pressure loss and sidewall aging still deserve attention.

If the car will sit for an extended season, check inflation regularly and consider reducing load on the tires with stands placed correctly under the chassis if the storage plan allows it. Keep the floor clean and dry, and avoid contact with petroleum products or solvents. A 2010 Infiniti that is stored well will usually return to service with fewer vibration, cracking, and pressure-retention issues than one left parked outdoors or in a damp garage.

On a 2010 Infiniti, tire age usually matters more than mileage once the car becomes a lightly used enthusiast or second vehicle. A sensible rule is to begin close evaluation around five to seven years of age and to treat ten years as a serious replacement threshold regardless of remaining tread. The DOT date code on the sidewall gives the tire’s week and year of manufacture, which is more useful than the vehicle’s model year when judging service life.

A sporty sedan can still wear old-looking tires that seem usable because the tread is deep, but aging rubber can harden, crack, or lose wet-road confidence long before it is worn out. For any 2010 Infiniti, inspect age first, then condition, then usage pattern. If the car sees occasional spirited driving or longer highway trips, replacing older tires before they are visibly worn is usually the more conservative approach.

Tires on a 2010 Infiniti should be inspected before every drive and more carefully before any long trip. Look for sidewall cracking, cuts, bulges, uneven tread wear, punctures, and any sign that pressure is not holding consistently. Since these fitments include low-profile 18- and 19-inch options, rim damage from potholes and bead-area leaks deserve attention along with the tire itself.

A quick walk-around catches many issues before they become a vibration, pull, or sudden pressure loss on the road. Monthly pressure checks with a quality gauge are a good baseline, and a hands-on inspection is wise after the car has sat for a while or after it has struck road debris. Any 2010 Infiniti that spends part of the year parked should have its tires checked again before returning to regular use.

A 2010 Infiniti G37 originally used modern radial tires, not vintage-style bias-ply construction. Within the G37 range, the relevant sizes are 225/55R17, 225/50R18, 245/45R18, 225/45R19, and 245/40R19 depending on wheel package and exact application. Blackwall appearance is the natural factory-era look for this model year, while a Wide Whitewall in 225/55R17 is a custom-style alternative rather than an original late-model Infiniti presentation.

If originality matters, the safest path is to match the exact size already tied to the car’s wheel package and keep the sidewall appearance in line with the period. Because the G37 was offered with more than one wheel diameter, checking the door placard, owner’s literature, and the car’s current wheel setup is worthwhile before calling a tire original-style. For trim- or market-specific confirmation, an Infiniti specialist or marque community is the best final checkpoint.

Correct tire fitment does matter when a 2010 Infiniti is judged for originality or presented as a carefully preserved modern collectible. Judges and knowledgeable enthusiasts will notice whether the tire size matches the proper wheel package, whether the construction is appropriate to the era, and whether the sidewall look fits the model year. Since 2010 Infiniti models used radial tires and a contemporary Blackwall appearance, a visibly non-period sidewall treatment can stand out immediately.

That does not mean every event uses the same standard, but staying close to the proper size and appearance avoids obvious distractions. A G37 wearing a Wide Whitewall may suit a personalized build, while a preservation-minded example is more convincing with a modern Blackwall radial in the correct dimensions. If the car will be judged seriously, check event rules and consult Infiniti marque circles for what that venue considers acceptable.

For the 2010 Infiniti, this comparison applies in 245/45R18, where both the BFGoodrich g-Force Sport COMP-2 and the Nitto NT555 G2 are available. The BFGoodrich carries a 96W rating with a stated load figure of 1,565 at 51 psi, while the Nitto carries an XL 100W rating with a stated load figure of 1,764 at 50 psi. Both use Blackwall styling and fit 7.5- to 9.0-inch rims, with the Nitto showing an 8.0-inch measuring point within that range.

That makes this less about basic fitment and more about choosing the exact specification that suits your car and wheel setup. If your 2010 Infiniti uses 245/45R18, compare the sidewall markings closely instead of assuming every tire in the size has the same load character. The wheel width, the car’s intended use, and your preference within the size all matter when narrowing that choice.

Yes, the available 2010 Infiniti tire sizes here are modern radial designs with W and, in several sizes, Y speed ratings. W is rated to 168 mph, while Y is rated to 186+ mph. Those ceilings are far beyond ordinary U.S. highway speeds, so for a properly maintained G37, M35, or M45, the larger concern is usually the overall condition, age, inflation, and alignment of the tire rather than a lack of speed capability.

Highway safety still depends on the whole car. A tire with a high speed rating cannot overcome worn suspension parts, poor alignment, aging brakes, or a neglected wheel. Before using a 2010 Infiniti for regular interstate driving, confirm that the tires are the correct size, in good condition, and inflated properly for the vehicle. A modern radial in sound condition is well suited to the kind of road use these Infinitis were designed to handle.

Inflation pressure for a 2010 Infiniti should start with the vehicle’s factory recommendation, because the car’s placard and owner’s manual are tied to its original wheel-and-tire package. Tire-specific load figures are available for several sizes here: 225/45R19 up to 1,565 lbs at 50 psi, 225/50R18 up to 1,709 lbs at 50 psi, 245/40R19 up to 1,653 lbs at 50 psi, 245/45R18 up to 1,764 lbs at 50 psi or 1,565 at 51 psi depending on product, and 225/55R17 up to 1,819 lbs at 50 psi or 1,609 at 51 psi depending on product.

Those figures are maximum load-and-pressure references for the tire itself, not universal cold-pressure settings for every 2010 Infiniti. The correct running pressure may differ by model, axle loading, and wheel package, so do not transfer one size’s pressure habits to another. Use the car’s recommended baseline, then confirm that the selected tire’s own sidewall and manufacturer guidance align with that application.

Before a longer drive in a 2010 Infiniti, inspect all four tires and the spare for cracking, cuts, bulges, punctures, uneven wear, and proper inflation. Pay close attention to wheel damage on the lower-profile 18- and 19-inch fitments, and verify that the valve stems are in good condition. It is also wise to look for any sign of feathering or shoulder wear that could point to alignment problems, especially on a sport sedan that may have seen aggressive driving or rough roads.

Tires are only one part of the preparation, but they are the part touching the road. A quick pre-trip check should be paired with a broader look at brakes, fluids, battery health, and suspension condition, particularly on a 2010 Infiniti that has been parked for stretches. If the car has mixed tire ages or recently changed wheels, settle those questions before committing to a longer highway run.