Determining what size tires are on Nissan Altima requires looking at the specific model year, as factory specifications have changed over the generations. The most common OEM tire size for the current generation is P215/60R17, fitted on the majority of trims to provide a balance of comfort, efficiency, and handling. This standard dimension is designed to work with the sedan’s suspension geometry, ensuring the speedometer remains accurate and the ride quality aligns with manufacturer intent.
Factory Specifications by Trim Level
While the base size is widespread, Nissan often differentiates the fitment based on the trim package to enhance the driving dynamics of higher trims. Understanding these variations is essential for owners looking to replace tires or upgrade their wheel setup.
S and SV Trim Levels
Tire Size: P215/60R17
Wheel Size: 17-inch
These trims prioritize fuel economy and daily usability, utilizing a narrower footprint for reduced rolling resistance.
SR and SL Trim Levels
Tire Size: P225/50R17
Wheel Size: 17-inch
Wider than the base model, this size improves grip during acceleration and cornering, catering to a sportier driving preference.
Platinum and Nismo RS Models
Tire Size: P225/45R18
Wheel Size: 18-inch</n
The reduced aspect ratio (the 45) provides a stiffer sidewall for better handling response, while the 18-inch wheels add mass for a more premium feel.
Importance of OEM Specifications
Sticking with the OEM recommended size is vital for the Electronic Stability Control (ESC) system to function correctly. These systems rely on precise wheel speed data, and deviating significantly from the diameter can cause the system to intervene unnecessarily or, worse, fail to activate when needed.
Aftermarket and Custom Fitment
Many owners opt to modify their Altima with larger wheels or low-profile tires for aesthetic purposes. If you choose to go wider or change the diameter, you must calculate the overall tire height to ensure it matches the factory setup within a 3% tolerance. This prevents clearance issues with the fenders and maintains the accuracy of the vehicle’s speedometer.
Year-to-Year Variations
It is important to note that the tire sizes on Nissan Altima have evolved over the production years. Models from the 2013 to 2019 generations often used P215/60R17, while the complete redesign for the 2020 model year shifted the standard to P215/55R17 on many trims. Always verify the sticker on the driver’s door jamb or the owner’s manual for the exact specification relevant to your specific vehicle identification number (VIN).
Practical Advice for Replacement
When shopping for new tires, whether for a daily driver or a performance upgrade, confirming the size is the first step. Look for the placard information, and when in doubt, consult a professional installer. They can advise on load index and speed rating, ensuring the replacement matches the safety and performance standards of the original equipment fitted to the Nissan Altima.
