Choosing the right tire size for your crossover Nissan Murano third generation (Z51 body) is a critical aspect that affects not only the comfort of movement, but also the safety and durability of the chassis. The manufacturer has provided several options for wheels and tires that can be installed on the car depending on the configuration and year of manufacture. Errors in selection can lead to the fact that the wheel simply will not fit into the arch, or the pressure sensor will begin to give false signals.
Owners are often faced with the dilemma of choosing standard 18-inch wheels for comfort or upgrading to 20-inch wheels for aesthetics and better handling. However, increasing the diameter of the disc inevitably leads to a decrease in the height of the rubber profile, which makes the ride harsher and increases the risk of damage to the disc on bad roads. Tire size must be strictly coordinated with the suspension parameters and the TPMS pressure control system.
Official tire sizes for Nissan Murano Z51
Manufacturer Nissan For the Z51 body, two main wheel size standards have been approved, which are officially supplied from the factory. The first option is a configuration with disks with a diameter 18 inches, which are considered the most balanced for everyday use. The second option is larger disks with a diameter 20 inches, available in top versions and aimed at fans of a sporty driving style.
The most common size for 18-inch wheels is 235/60 R18. This type of rubber has a sufficient volume of air and a high profile, which allows it to effectively absorb impacts from holes and uneven surfaces. 20" drives use a lower profile, usually 255/45 R20, which improves traction on asphalt at high speeds, but requires more careful driving.
- π 235/60 R18 - standard size for most trim levels, ideal balance of comfort and maneuverability.
- ποΈ 255/45 R20 β sporty size for top versions, improving directional stability on the highway.
- βοΈ 235/65 R17 - a rare winter option, sometimes available in specific regions.
It is important to consider that when replacing a size, it is necessary to check the compliance of the load index and speed. For a heavy crossover Murano the load index must be at least 103 (for 18 inches) and 101 (for 20 inches). Ignoring these parameters can lead to destruction of the tire sidewall during a sharp maneuver or hitting an obstacle.
Disc technical parameters and geometry
In addition to the diameter and width of the profile, the parameters of the disk itself play a critical role, which are often ignored when purchasing non-standard tires. For the Nissan Murano Z51, the key specifications are offset (ET), rim width (J), and number of mounting bolts. Failure to comply with these parameters may result in damage to the arch or brake calipers.
The standard parameters for the wheels of this car are as follows: the rim width is 7.5 inches for 18-inch wheels and 8.0 inches for 20-inch wheels. Overhang (ET) is usually in the range of 45 to 50 mm. The bolt pattern (PCD) is 5x114.3 and the center hole diameter (DIA) is 66.1mm. Any upward deviation in offset will require spacers, which can negatively affect the wheel bearings.
| Parameter | Wheels 18" (R18) | Wheels 20" (R20) | Note |
|---|---|---|---|
| Tire size | 235/60 R18 | 255/45 R20 | Official plant dimensions |
| Rim Width (J) | 7.5J | 8.0J | Acceptable range Β±0.5J |
| Departure (ET) | ET45 - ET50 | ET45 - ET50 | Affects track width |
| Bolt Pattern (PCD) | 5x114.3 | 5x114.3 | Standard on most Nissan models |
| Hub Diameter (DIA) | 66.1 mm | 66.1 mm | Exact match required |
If you plan to install wheels with a different offset, you need to consider how this will change the break-in arm and the load on the steering mechanism. Increasing the track width may improve cornering stability, but will accelerate wheel bearing wear. Suspension geometry calculated by engineers to the nearest millimeter, so any interventions must be justified.
β οΈ Attention! The use of disks with a central hole diameter of less than 66.1 mm is strictly prohibited, as this will lead to the centering of the wheel not on the hub, but on the bolts, which will cause the steering wheel to wobble and destroy the fastening elements when moving.
- 18 inches (235/60 R18)
- 20 inches (255/45 R20)
- Other size
- I don't know yet
Tire pressure and its impact on operation
Correct tire pressure is the key to not only saving fuel, but also preserving the life of the tires and suspension. For Nissan Murano Z51, recommended pressure values ββdepend on the load on the vehicle and the size of the wheels installed. Typically, pressure information is located on a sticker located on the driver's side B-pillar or on the inside of the gas filler flap.
For standard use (up to 3 passengers and small luggage), the recommended pressure for R18 tires is 2.2 bar in the front axle and 2.2 bar in the back. When the car is fully loaded, when there are 5 passengers in the cabin and the trunk is full, the pressure should be increased to 2.5 bar behind. For R20 drives the values may vary slightly, often requiring 2.3 bar due to the smaller volume of air in the chamber.
- π Pressure check should be done on βcoldβ tires (after parking for more than 2 hours or driving no more than 2 km).
- π‘οΈ Temperature coefficient states that when the temperature drops by 10Β°C, the pressure drops by about 0.1 bar.
- π Low pressure leads to overheating of the tire, increased fuel consumption and uneven tread wear.
Modern TPMS (Tire Pressure Monitoring System) systems in Murano Z51 monitor pressure in real time. If the system issues a warning, do not ignore it, as even a small decrease in pressure can change the vehicle's behavior on the road. In winter, when the temperature drops sharply, it is necessary to check the pressure more often as the volume of air in the tire is reduced.
βοΈ Tire pressure monitoring
Seasonal features and tire choice
Choosing seasonal tires for the Nissan Murano Z51 requires special attention due to the large weight of the crossover and its all-wheel drive. Winter tires must have not only a soft rubber compound, but also an aggressive tread pattern for effective removal of snow and dirt. Summer tires, in turn, must provide rigidity to the tread block for good grip on wet asphalt.
For the winter season, it is recommended to use tires with a speed index of at least H (210 km/h) or V (240 km/h), even if you don't drive that fast. This is important for the safety margin during emergency braking. Winter tires for Murano often has additional spikes or lamellas that improve traction on ice. In summer, it is better to choose tires with high aquaplaning resistance to avoid loss of control in puddles.
After winter, corrosion is often found on metal discs or cracks on cast ones, which could have occurred due to impacts with ice hidden under the snow or curbs. Seasonal change This is the ideal time for diagnosis.
What is a tread wear indicator?|The wear indicator is a 1.6mm high projection in the tread groove. When the tread wears down to this level, the tire is considered unsuitable for further use. For winter tires, manufacturers recommend changing tires if the remaining tread depth is less than 4-5 mm, since below this value the efficiency on snow drops sharply.-->
β οΈ Attention! Installing studded tires on the front axle and summer tires on the rear axle (or vice versa) is strictly prohibited, as this upsets the handling balance and can lead to an uncontrolled skid of a heavy crossover on a slippery road.
The effect of tire size on the dashboard and speedometer
When changing a tire size from the factory to an alternative (for example, increasing the diameter from 18 to 20 inches while maintaining the same overall wheel diameter), questions arise about the accuracy of the speedometer. Speedometer in Nissan Murano calculated based on wheel speed and its nominal diameter. If the actual wheel diameter differs from the calculated one, the speedometer readings will be erroneous.
For example, if you installed wheels whose overall diameter is 3% larger than stock, the speedometer will show a speed 3% lower than the actual speed. This could result in a speeding ticket because you will be driving faster than the speed indicator indicates. Conversely, reducing the diameter will cause the speedometer to overestimate the readings. Speedometer error also affects the operation of the pressure control system and ABS, which are calibrated to the standard size.
To minimize errors when selecting non-standard sizes, you must use a tire calculator that will calculate the difference in diameter. The permissible deviation is usually no more than 2-3%. If you plan to install wheels of a different size, be sure to check that the wheels do not touch the wheel arch liners when the steering wheel is fully turned and the suspension is compressed.
β οΈ Attention! Installing studded tires on the front axle and summer tires on the rear axle (or vice versa) is strictly prohibited, as this upsets the handling balance and can lead to an uncontrolled skid of a heavy crossover on a slippery road.