The 2008 Infiniti G37 arrived as a sharper, more performance-focused luxury sport coupe, blending strong road manners with the rear-drive balance that made the G-series such a standout in its class. Tire choice matters more here than on a purely comfort-oriented car because wheel diameter and front-to-rear sizing can change by configuration. The 2008 Infiniti G37 uses radial tires, with 225/50R18 on 18-inch applications and a staggered 19-inch setup pairing 225/45R19 front with 245/40R19 rear. Available choices center on blackwall performance radials across several BFGoodrich g-Force series. The key is matching the exact sub-model and wheel setup before comparing tread character, load specification, and overall driving intent.
Which Tire Size Is Right for The 2008 Infiniti G37
Three tire sizes apply to the 2008 Infiniti G37, and the right one depends on both sub-model and wheel diameter. Base and Journey models use an 18-inch radial fitment, while 19-inch front and rear sizes appear on staggered applications. The first step is confirming whether the car has the 18-inch setup or the 19-inch front and rear combination before comparing tire series and product details.
225/50R18 is a metric radial size in which 225 is the nominal section width in millimeters, 50 is the aspect ratio, R identifies radial construction, and 18 is the rim diameter in inches. On the 2008 Infiniti G37, this size serves the 18-inch wheel applications and keeps the fitment straightforward compared with the staggered 19-inch setup. Available choices are blackwall BFGoodrich radials in the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A series. This is the size to evaluate when the car has the standard 18-inch arrangement and the goal is choosing among performance-oriented radial options.
225/45R19 is a metric radial size with a 225-millimeter nominal section width, a 45-series profile, radial construction, and a 19-inch rim diameter. On the 2008 Infiniti G37, this size is used on the front of the staggered 19-inch setup rather than as a universal four-corner fitment. Product choices remain centered on blackwall BFGoodrich g-Force series, including all-season, sport-focused, and Phenom T/A variations. This front size matters when preserving the intended staggered relationship, so it should be matched carefully with the correct rear size and actual wheel configuration.
245/40R19 is a metric radial size in which 245 denotes nominal section width in millimeters, 40 is the aspect ratio, R means radial, and 19 identifies the rim diameter. For the 2008 Infiniti G37, this is the rear size used with the 19-inch staggered arrangement and it works in tandem with a narrower 225/45R19 front tire. BFGoodrich offers this size in blackwall g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A versions. This is the rear fitment to confirm when the car uses the 19-inch package and the goal is maintaining the proper front-to-rear sizing balance.
Tire fitment on the 2008 Infiniti G37 is not the same across every covered configuration. Checking the exact sub-model matters because some use a single 18-inch size while others use a staggered 19-inch front-and-rear arrangement.
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2008 Infiniti G37 Base
The 2008 Infiniti G37 Base uses the 225/50R18 radial size. Tire selection is mainly about choosing the right blackwall performance radial within that fitment and confirming that the car still carries the correct 18-inch wheels.
The 2008 Infiniti G37 Journey also uses the 225/50R18 radial size in its standard 18-inch configuration. That keeps fitment simple, with the main decision shifting to tire series, rim-width compatibility, and the type of road feel you want from a modern performance radial.
The 2008 Infiniti G37 Journey Front uses 225/45R19 as the front half of a staggered radial setup. Selecting tires here means preserving the intended front size and pairing it with the correct rear fitment rather than treating the car as a same-size, four-corner application.
The 2008 Infiniti G37 Journey Rear uses 245/40R19 at the rear in the staggered 19-inch setup. That makes rear tire choice part of a matched front-and-rear fitment decision, so wheel width and the remaining front size should be verified before replacement.
The 2008 Infiniti G37 Sport Front uses 225/45R19 on the front axle. Tire selection should keep that front size aligned with the proper staggered rear setup while comparing the available BFGoodrich g-Force series for the desired balance of appearance and driving character.
The 2008 Infiniti G37 Sport Rear uses 245/40R19 at the rear. Choosing the right replacement means maintaining the staggered relationship with the front tires and confirming that the rear wheels still match the expected 19-inch fitment and width range.
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.
Best 2008 Infiniti G37 Tires for Sale
Available 2008 Infiniti G37 tire choices center on BFGoodrich blackwall radials in three sizes and several g-Force series, including g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A. Comparison points include wheel-size compatibility, staggered front-rear fitment, load specification, and series character.
Common 2008 Infiniti G37 tire questions usually come down to identifying the correct size by sub-model, understanding the 18-inch versus staggered 19-inch setups, and comparing available radial tire series for fitment, appearance, and road use.
Tire Size & Fitment
What tire size fits a 2008 Infiniti G37?
The 2008 Infiniti G37 uses three tire sizes depending on configuration: 225/50R18, 225/45R19, and 245/40R19. Base and Journey models use 225/50R18, while the 19-inch staggered setup uses 225/45R19 in front and 245/40R19 in the rear.
The practical question is not just the model year and name, but which wheel package the car actually has today. A G37 with factory-style 18-inch wheels needs a different tire plan than one using the staggered 19-inch arrangement, so wheel diameter and front-to-rear sizing should be confirmed before replacement.
What size rim does a 2008 Infiniti G37 use?
The 2008 Infiniti G37 uses either an 18-inch or 19-inch rim, depending on the tire size and sub-model. The 225/50R18 fitment uses an 18-inch rim, while both 225/45R19 and 245/40R19 use 19-inch rims as part of the staggered setup.
Rim diameter should be verified before looking at tread pattern or tire series because the 18-inch and 19-inch fitments are not interchangeable just by preference. It also helps to confirm wheel width, especially on the 19-inch front and rear arrangement, since the two tire sizes do not share the same recommended rim-width range.
Do all 2008 Infiniti G37 sub-models use the same tire size?
No. The 2008 Infiniti G37 uses more than one tire size across its covered sub-models. Base and Journey models use 225/50R18, while Journey Front and Sport Front use 225/45R19 and Journey Rear and Sport Rear use 245/40R19.
That difference matters because some G37 configurations are simple same-size applications and others are staggered from front to rear. The best starting point is to identify whether the car is on 18-inch wheels or on the 19-inch front-and-rear setup, then match the tire size to the correct axle position.
Choosing the Right Tire
What should I consider when choosing a 2008 Infiniti G37 tire?
Start with the correct size for the car's actual setup: 225/50R18 for the 18-inch application, or 225/45R19 front and 245/40R19 rear for the staggered 19-inch arrangement. From there, compare radial tire series, rim-width compatibility, load specification where stated, and whether the car is used more for everyday street driving or a firmer performance feel.
The available G37 choices are all blackwall BFGoodrich radials, but they are not identical in character or specification. It helps to compare the exact size on the exact wheel first, then look at differences in series naming, weight, and max load figures where shown so the tire matches the car's present setup and use.
What brands offer tires for the 2008 Infiniti G37?
The available tire choices for the 2008 Infiniti G37 come from BFGoodrich. Across the 18-inch and 19-inch fitments, the brand appears in several g-Force series, giving the G37 owner more than one performance-oriented radial option within the correct size.
Since the brand selection stays consistent, the real comparison shifts to series differences, axle position on staggered cars, and wheel-width compatibility. That is especially important on 19-inch applications, where the front 225/45R19 and rear 245/40R19 should be chosen as part of one coordinated fitment rather than as unrelated purchases.
What tire series are available for the 2008 Infiniti G37?
The 2008 Infiniti G37 is available with BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A tires in the applicable sizes. Those series appear across the 225/50R18, 225/45R19, and 245/40R19 fitments, all in blackwall radial construction.
Choosing between series comes after confirming size and wheel package. Once the correct fitment is nailed down, the series comparison can focus on the kind of street use the car sees, plus supporting details such as rim-width range, weight, and stated max load figures where those specifications are part of the individual tire listing.
Restoration & Appearance
Which tire should I choose for a period-style 2008 Infiniti G37?
A period-style 2008 Infiniti G37 still starts with the correct factory-type fitment pattern for the car's configuration: 225/50R18 on the standard setup or 225/45R19 front with 245/40R19 rear on the staggered 19-inch arrangement. Since the available tires are modern blackwall radials, the most authentic visual approach comes from keeping the right wheel diameter and front-to-rear relationship.
Appearance on a newer enthusiast car like the G37 is shaped as much by stance and wheel package as by sidewall treatment. A car aimed at original-style presentation should be checked carefully for aftermarket wheel changes, altered ride height, or mixed tire sizing before choosing among the available radial series.
Does correct tire fitment matter for a 2008 Infiniti G37 restoration?
Yes, correct tire fitment matters on a 2008 Infiniti G37 restoration because the visual balance and intended stance depend on the proper size and wheel combination. An 18-inch same-size setup presents differently from the 19-inch staggered arrangement, and mixing those approaches can change both the appearance and the way the car sits.
A restoration-minded owner should confirm what wheel package belongs on the specific car before selecting tires. Exact originality questions are best answered alongside window-sticker records, build information, or marque-specific references, but the right starting point is always the correct size, correct rim diameter, and correct front-to-rear layout.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2008 Infiniti G37?
Yes. Modifications can affect tire fitment on a 2008 Infiniti G37 even when the replacement tire is one of the correct original-type sizes. Aftermarket wheels, different wheel widths, suspension changes, lowering, or body alterations can change the space available around the tire and alter how an 18-inch or 19-inch setup behaves.
A modified G37 should be checked for actual wheel diameter, wheel width, and front-to-rear sizing before a new set is chosen. Clearance at the fender, inner wheelhouse, and steering range deserves attention as well, especially on staggered 19-inch cars where the front and rear tires are intentionally different.
What should I inspect before driving a 2008 Infiniti G37 on new tires?
Before driving a 2008 Infiniti G37 on new tires, inspect the wheels for damage, verify the tire sizes match the car's setup, and make sure the tires are mounted in the correct front and rear positions if the car uses the staggered 19-inch arrangement. Inflation pressure, valve condition, and visible issues such as cuts or mounting damage should also be checked.
A short road test should confirm that the car tracks properly and that there is no rubbing during steering or suspension movement. It also helps to recheck pressure after the first drives and keep an eye on any vibration, since wheel condition, alignment, and balance can affect how a performance-oriented G37 feels on fresh tires.
How often should tires on a 2008 Infiniti G37 be inspected?
Tires on a 2008 Infiniti G37 should be inspected regularly, not just when tread looks low. Performance-oriented fitments like 225/50R18 or the staggered 225/45R19 and 245/40R19 setup benefit from routine checks for pressure loss, irregular wear, cracking, bulges, cuts, and any sign that front and rear tires are wearing differently.
Cars that are driven infrequently still need attention because time, storage conditions, and air loss can affect tire condition even when mileage stays low. A quick inspection before longer drives is a smart habit, and any unusual wear pattern should prompt a closer look at alignment, suspension condition, or wheel setup.
