The 1998 Infiniti Q45 came from a period when Japanese luxury sedans were balancing quiet highway comfort with confident V8 performance and understated styling. Buyers who keep one on the road today often want the same composed character that made the Q45 such a serious flagship in its era. This exact model uses a 215/60R16 radial tire on a 16-inch rim, and that keeps the fitment question refreshingly straightforward. The real choice is within that size, including the tire design, road manners, and overall presentation that best suits the car. For a stock sedan, correct size and wheel confirmation come first before comparing replacement options.
Which Tire Size Is Right for The 1998 Infiniti Q45
The 1998 Infiniti Q45 uses one primary tire size: 215/60R16, a radial fitment for a 16-inch rim. Both the Base and T sub-models share that same size, so the main decision is not which size fits, but which tire in that size best matches the car's condition, wheel setup, and intended road use.
215/60R16 is a metric radial size in which 215 refers to section width in millimeters, 60 is the aspect ratio, R identifies radial construction, and 16 is the rim diameter in inches. On a 1998 Infiniti Q45, this modern sizing format matches the car's original era and suits its luxury-sedan balance of ride quality, handling, and highway use. Because both covered sub-models use this same size, the key comparison is between tire designs and specifications within 215/60R16 rather than between different fitments. It is also wise to confirm that the car still carries its correct 16-inch wheel setup before selecting a replacement tire.
Tire fitment is straightforward across the covered 1998 Infiniti Q45 sub-models because both use the same primary size. Checking the exact sub-model still helps confirm that the car has not been altered with a different wheel or suspension setup over time.
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1998 Infiniti Q45 Base
The 1998 Infiniti Q45 Base uses the same 215/60R16 radial tire size as the broader model line. That keeps tire selection focused on choosing the right replacement within the proper size rather than sorting through multiple fitment paths.
The 1998 Infiniti Q45 T also uses 215/60R16 radial tires, so there is no separate primary size to account for at the sub-model level. Selection comes down to staying with the correct dimensions and confirming the car still retains its intended wheel diameter.
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
These 1998 Infiniti Q45 tire FAQs focus on the 215/60R16 fitment, 16-inch rim compatibility, sub-model consistency, replacement selection, and the condition checks that matter before putting a preserved luxury sedan back into regular road use.
Tire Size & Fitment
What tire size fits a 1998 Infiniti Q45?
The 1998 Infiniti Q45 uses a 215/60R16 radial tire. That size applies to the covered Q45 Base and Q45 T sub-models, so the primary fitment remains consistent across the model range for this year.
Since there is one main size, the practical step is confirming that the car still has its correct 16-inch wheels and has not been changed to an aftermarket setup. Once wheel diameter is verified, tire selection becomes a matter of choosing the right replacement in 215/60R16 for the sedan's intended use and overall condition.
What size rim does a 1998 Infiniti Q45 use?
The primary tire fitment for the 1998 Infiniti Q45 is built around a 16-inch rim. That comes directly from the 215/60R16 tire size, where the final number identifies the wheel diameter in inches.
Wheel diameter should be confirmed on the car before ordering tires, especially on an older luxury sedan that may have seen wheel changes over the years. A matching 16-inch diameter is essential, and wheel width and overall clearance should also make sense for the selected 215/60R16 tire and the vehicle's current setup.
Do all 1998 Infiniti Q45 sub-models use the same tire size?
Yes. The covered 1998 Infiniti Q45 sub-models use the same primary tire size, 215/60R16, and both the Base and T versions are shown with radial construction in that fitment.
That simplifies the search because the decision is not about choosing between two factory tire sizes. Even so, it is still smart to inspect the actual car for replacement wheels, suspension changes, or clearance issues before buying tires, since those real-world changes can affect what works even when the original sub-model fitment is consistent.
Choosing the Right Tire
What should I consider when choosing a 215/60R16 tire for a 1998 Infiniti Q45?
Start with the confirmed factory-style fitment: 215/60R16 on a 16-inch wheel. On a 1998 Infiniti Q45, the first priorities are correct size, radial construction, and making sure the wheel setup on the car still matches the intended dimensions.
After that, think about how the sedan is used. A regularly driven Q45 may call for a different replacement emphasis than a preserved weekend car, even within the same size. Ride quality, steering feel, load capability, and the overall character you want from the car all matter once the basic fitment is confirmed.
How do I choose between available 215/60R16 tires for a 1998 Infiniti Q45?
The best way to compare 215/60R16 options for a 1998 Infiniti Q45 is to keep the size fixed and evaluate the details that affect real-world use. Construction stays radial, so the differences usually come down to tire design, specifications, and how the tire suits the car's condition and driving pattern.
A highway-oriented sedan like the Q45 benefits from careful matching rather than guesswork. Compare the wheel dimensions on the car, look at load-related specifications where available, and consider whether the sedan sees regular road miles or mostly occasional use. That approach helps narrow the field without drifting away from the correct fitment.
What rim-fitment details should I compare when choosing 1998 Infiniti Q45 tires?
The first rim-fitment detail is diameter, because the 1998 Infiniti Q45 uses a 16-inch wheel with its 215/60R16 tire size. After that, wheel width and the condition of the wheel itself matter when selecting a replacement tire.
A tire can be the correct nominal size and still deserve a closer look if the car has aftermarket wheels, prior repairs, or visible rim damage. Checking wheel width, bead-seat condition, and any signs of rubbing or uneven tire wear helps ensure the new 215/60R16 tires are matched to the car you actually have today.
Restoration & Appearance
Which tire should I choose for a period-style 1998 Infiniti Q45?
A period-style approach for a 1998 Infiniti Q45 starts with keeping the correct 215/60R16 radial size and the proper 16-inch wheel diameter. Because this is a late-1990s luxury sedan, staying with the original sizing format does more for the car's overall look and stance than chasing an oversized or undersized substitute.
Appearance and driving character usually work best when the tire preserves the sedan's intended proportions. If originality matters beyond basic fitment, compare the car against marque literature, period photos, or model-specific reference material. That helps separate a generally era-appropriate replacement from one chosen for a stricter restoration goal.
Does correct tire fitment matter for a 1998 Infiniti Q45 restoration?
Yes, correct tire fitment matters on a 1998 Infiniti Q45 restoration because tire size affects the car's stance, wheel-to-fender relationship, and overall presentation. Keeping the proper 215/60R16 radial fitment also supports the balanced luxury-sedan look the Q45 carried in period.
Restoration-minded owners should think beyond simple wheel diameter and avoid assuming any 16-inch tire will create the same result. A different profile can change the visual proportions and may also affect clearance. Using the correct size as the baseline keeps the car closer to its intended appearance before finer cosmetic decisions are made.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1998 Infiniti Q45?
Yes. Modifications can affect tire fitment on a 1998 Infiniti Q45 even though the original size is straightforward. Lowering, replacement springs, aftermarket wheels, or body and suspension changes can all alter clearance and change whether a 215/60R16 tire behaves as expected on the car.
A modified Q45 should be checked at the wheel wells and during steering travel before new tires are selected. Wheel diameter, width, and offset all matter once the car departs from stock form. Looking for signs of rubbing, unusual wear, or tight clearance is especially important on a sedan that may have been updated over time.
What should I inspect before driving a 1998 Infiniti Q45 on new tires?
Before driving a 1998 Infiniti Q45 on new tires, inspect the wheels, valve stems, and visible suspension condition, and make sure the replacement tires match the intended 215/60R16 fitment. It is also wise to check for alignment-related wear, damaged rims, or anything that suggests the old tires were not wearing evenly.
A roadworthy tire installation depends on more than fresh rubber. Confirm proper inflation, look for fluid leaks or worn steering components, and make sure there is no contact at full lock or over suspension movement. On an older luxury sedan, those basic checks help the new tires deliver the composed road manners the car was built to have.
How often should tires on a 1998 Infiniti Q45 be inspected?
Tires on a 1998 Infiniti Q45 should be inspected regularly, with extra attention if the car is driven infrequently or stored for long periods. Age, air loss, uneven wear, sidewall cracking, cuts, and bulges all deserve routine checks, even when tread depth still looks acceptable.
A surviving Q45 may spend more time parked than a daily driver, which can make condition checks just as important as mileage-based replacement thinking. Inspect the tires before longer drives, monitor inflation, and watch for vibration or pull that suggests wear or alignment issues. Consistent inspection is one of the simplest ways to protect fitment and road manners.
