Wheel/Tire Assembly (RFV) Measurement

Use a Hunter GSP 9700 wheel balance machine (or comparable equipment) to perform this procedure and identify tire/wheel assemblies with excessive RFV.

If you do not have a Hunter GSP 9700 balance machine (or comparable equipment), locate a repair facility equipped with one in your area by logging on to www.hunter.com or calling 1-314-731-3020. Hunter will connect you with a service representative who can assist you.

1. Check the inflation pressure of all four tires and adjust to 26 PSI, if needed.

2. Repeat the Road Test Procedure.

NOTE:
Completing the Road Test Procedure will "exercise" the tires and address any possible "cold" flat spotting that may have occurred due to short-period vehicle storage or parking (see Short-Period/Cold Flat Spotting for details). It is also necessary to perform the road test as specified to get an accurate RFV Measurement.

Never check RFV without first driving the vehicle as noted and "exercising" the tires. If the vehicle's tires are not exercised first, accuracy of RFV measurements can vary 2 or 3 times the actual values, even if the vehicle is parked/stored in one location for only a short period of time (20 minutes).

Perform the RFV measurement immediately after exercising the tires. If the RFV measurement cannot be performed immediately, lift all four wheels off the ground with a hoist or jack and stands to prevent measurement errors due to further flat spotting.

3. Follow the operation instructions of the Hunter GSP 9700 machine (or equivalent) to measure RFV of all four tire/wheel assemblies.

NOTE:
If you are using the Hunter GSP 9700 machine, use the "Details" pop-up screen to obtain Radial 1st and 2nd Harmonic Values (RH1 and RH2).

RHI and RH2 values are accessed by pressing the K4 key twice from the primary screen after the spinning operation is completed.





4. Identify tires/wheel assemblies with excessive RHI and/or RH2 values using the information table shown:

Examples of Excessive Front Axle Values:

LF RH1 = 13 lbs. (6 kg.)------------Excessive RH1; Replace Left Front Tire
RF RH1 = 9 lbs. (4 kg)

Total Front Axle RH1 = 22 lbs. (10 kg.) Over Total Limit of 20 lbs. (9 kg.)

LF RH2 = 11 lbs. (5 kg.) Excessive RH2; Replace Left Front Tire
RF RH2 = 8 lbs. (4 kg.)

Total Front Axle RH2 = 19 lbs. (9 kg.) Over Total Limit of 18 lbs. (8 kg.)

5. If the vehicle is equipped with Original Equipment (OE) Bridgestone tires, rotate the incident tires/wheel assemblies to ensure they are placed correctly to meet RH1 and RH2 requirements shown in (step 4).

If RH1 and RH2 requirements cannot be met through tire/wheel assembly rotation, replace incident tires with appropriate tires listed in the PARTS INFORMATION section to achieve total RH1 and RH2 numbers for the front and rear axles as specified in (step 4). Match and install the tires/wheel assemblies with the lowest RH1 and RH2 values on the front axle.

If the vehicle is equipped with Non-Bridgestone OE tires (i.e. Toyo, Dunlop, etc.) and the RH1 and RH2 requirements listed in (step 4) cannot be met by rotating the incident tires/wheel assemblies, replace all four tires with appropriate tires listed in the PARTS INFORMATION section to achieve total RH1 and RH2 numbers for the front and rear axles as specified. Match and install the tires/wheel assemblies with the lowest RH1 and RH2 values on the front axle.

NOTES:
Lubricate the tire bead and mating surfaces of the wheels when mounting. Use an appropriate fast drying tire mounting lubricant to prevent liquid from being trapped inside the tire.

Match and position the red dot on the tire sidewall in line with the blue/gray/white dot on the wheel. If the paint dots are wiped off or missing, use the Hunter GSP 9700 machine tire/wheel match mounting feature to achieve the best RFV fit.

Immediately inflate the tires to 40 PSI. Gradually deflate the tires to proper air pressure of 26 PSI. This will aid in properly mating the tire beads with the rims.

6. Road test the vehicle at 60-70 mph.

7. Confirm that the steering and/or body vibration is resolved.





PARTS INFORMATION

CLAIMS INFORMATION

Please reference the current "Nissan Flat Rate Manual" and select the Operation, or combination of Operations, that best reflect the repairs performed.

Important
In the event that any tires must be replaced, please record and retain the RFV measurement data with the RO.