2009 Infiniti G37 Tires

The 2009 Infiniti G37 uses five primary tire sizes: 225/45R19, 225/50R18, 245/40R19, 245/45R18, and 225/55R17. All are radial tires, but they do not apply to every G37 in the same way because some versions use square sizing while others use staggered front-and-rear fitments.

The correct choice depends on the exact body style and wheel package. A coupe, sedan, convertible, sport model, or AWD version may not use the same diameter or the same front and rear size, so confirming the sub-model and reading the actual tire size on the car are the safest first steps.

A 2009 Infiniti G37 can use 17-inch, 18-inch, or 19-inch rims depending on configuration. The tire sizes tied to those diameters are 225/55R17 for 17-inch wheels, 225/50R18 and 245/45R18 for 18-inch wheels, and 225/45R19 and 245/40R19 for 19-inch wheels.

Wheel diameter is the first fitment checkpoint because each tire size is built for a specific rim diameter. Once that is confirmed, the next step is determining whether the car uses the same size at all four corners or a staggered setup with one size in front and another in back.

The 2009 Infiniti G37 has more than one tire size because different sub-models use different wheel packages, and several versions use staggered fitment. Some carry a single size on all four corners, while others pair a narrower front tire with a wider rear tire on either 18-inch or 19-inch wheels.

That variety means tire selection is tied to the exact trim and wheel arrangement rather than the G37 name alone. A quick visual check of the wheel diameter and the tire size markings on the front and rear tires will usually clarify whether the car uses a square setup or a staggered combination.

Start with the exact tire size and wheel diameter used on the car, since the 2009 Infiniti G37 spans 17-inch, 18-inch, and 19-inch fitments. It also matters whether the car uses the same size at all four corners or a staggered front-and-rear arrangement, because that changes which sizes belong together.

After fitment is confirmed, compare the available radial tire series by intended use, sidewall style, and wheel-width compatibility. A blackwall performance tire may suit a sport-oriented driver, while a 225/55R17 sedan setup opens the door to redline or wide whitewall styling for a different overall presentation.

Blackwall is the main sidewall style available across the 2009 Infiniti G37 fitments, especially in the 18-inch and 19-inch performance sizes. The 225/55R17 size also adds two appearance-focused options: a wide whitewall and a redline in the BFGoodrich Silvertown Radial series.

That means sidewall choice depends partly on which G37 wheel package the car uses. Owners with 17-inch sedan fitment have the broadest visual range, while buyers with staggered 18-inch or 19-inch setups will usually be choosing among blackwall performance radials rather than alternate vintage-style sidewall treatments.

BFGoodrich is the main brand offered across all five 2009 Infiniti G37 tire sizes, including the g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and Silvertown Radial lines. Nitto also appears in the 245/45R18 rear size with the NT555 G2.

Brand choice should still follow the fitment first. The most useful comparison is not simply brand versus brand, but which brand and series are available in the exact size your G37 uses, along with the sidewall treatment, rim-width range, and intended character of the tire.

A period-style approach for a 2009 Infiniti G37 begins with keeping the correct size and wheel diameter for the exact sub-model. From there, the 225/55R17 fitment offers the most appearance-focused choices, including BFGoodrich Silvertown Radial options with either a wide whitewall or a redline sidewall.

That kind of choice is more about visual direction than strict originality. Owners aiming for a customized luxury-sport look may prefer the redline or whitewall treatment, while those keeping a more contemporary factory-inspired presentation will usually stay with blackwall radials in the vehicle’s correct size.

On a 2009 Infiniti G37, construction is straightforward because the vehicle uses radial tires across its fitments. The visual difference comes less from bias-ply versus radial choice and more from sidewall treatment, tire series, and whether the car wears a standard blackwall or one of the 225/55R17 Silvertown Radial styles.

Appearance still depends on preserving the proper size relationship for the specific setup. A G37 with staggered wheels looks right when the front and rear sizing remains balanced, while a square-fit sedan needs the correct single size to maintain the proportions intended by its wheel and tire package.

Yes. A 2009 Infiniti G37 can be sensitive to wheel, suspension, and ride-height changes because many versions already use staggered sizing and tight diameter-specific fitments. Aftermarket wheels, altered offsets, lowering, or body changes can all affect clearance even when the tire size itself looks close to stock.

Any modified G37 should be checked at full steering lock and through suspension travel before committing to a replacement tire. It is also worth confirming actual wheel width and diameter on the car, since a previous owner may have changed the setup from the original 17-inch, 18-inch, or 19-inch package.

Before driving a 2009 Infiniti G37 on new tires, inspect the wheels for damage, verify that the tire sizes match the car’s intended front and rear positions, and check inflation pressure. It also makes sense to look over alignment-related wear points, especially on a car that uses a staggered setup.

A short, careful road test can confirm that there is no rubbing, vibration, or steering interference. After the first miles, recheck pressure and look for any sign that the tires are contacting liners, fenders, or suspension parts, particularly if the G37 has aftermarket wheels or nonstandard ride height.

Tires on a 2009 Infiniti G37 should be maintained with regular pressure checks, visual inspections for cuts, bulges, cracking, and uneven wear, and periodic reviews of tread condition. Because some G37 versions use staggered fitment, front and rear tires may not wear the same way or be interchangeable side to side.

Good maintenance also means paying attention to how the car is used and stored. A G37 that sits for long periods should still have its tire condition checked before returning to the road, and any persistent air loss, vibration, or unusual wear pattern is a reason to inspect the wheel and alignment setup.