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2021+ RZR Trail Wheels and Brake System Inspection and Tire Rotation

Required Tools and Supplies
19mm SocketTread Depth Gauge
Torque WrenchFlashlight
Breaker Bar
Brake Fluid
Brake Rotor Measurement ToolMirror
Brake Pad Measurement ToolSafety Glasses
Tire Pressure GaugeNitrile Gloves
Shop Towels

To learn about tools, read the Tools and Fasteners Guide. Always wear safety glasses and nitrile gloves when servicing your Polaris RZR.

To inspect the wheels and brake system and perform a tire rotation on your 2021+ RZR Trail, follow these steps:

1. Take a close look at each tire. 

  • Verify there is sufficient tread depth. Tires should be replaced once they reach one-eighth inch or 3 millimeters of tread depth.
  • Inspect for damage that may compromise the integrity of the tire.
  • Inspect the tire pressure and verify it is set to specification. Reference the Owner's Manual or tire pressure label on your vehicle for the correct specification.
  • Take a close look at how the tires are wearing. If there is irregular wear, it may be time for a rotation.

2. Remove the tires from the vehicle. 

  • Loosen the lug nuts with a 19mm socket and breaker bar while the vehicle is on the ground but do not remove at this time.
  • Safely elevate the vehicle. Reference your Owner’s Manual for proper lifting techniques.
  • Once safely elevated, remove the lug nuts and set aside. 
  • Remove the wheels and set aside. 

3. Inspect the brake system.

  • Inspect the fluid level and condition in the master cylinder, located in the right front wheel well. Ensure the level is between the MIN and MAX marks. If it is low, clean around the cap and add fluid as necessary from a new and unopened bottle. DOT Brake Fluid is part number 2872189Note: Do not allow brake fluid to contact painted surfaces or paint damage may occur.
  • Inspect the banjo bolts on the right side of the master cylinder for leaks. Tip: A mirror and flashlight can be used to help see the bolts. 
  • Follow the lines all the way to the front calipers, looking for any leaks, kinks or damage. Ensure the brake line retainers are properly secured.
  • Inspect the connections at the front brake calipers for leaks.
  • Follow the brake lines back to the rear of the vehicle, checking for leaks, kinks and damage. 
  • Inspect the connections at the junction block in the driver’s side rear wheel well for leaks.
  • Follow the brake line to the rear brake calipers, looking for leaks, kinks and damage. Also ensure the brake line retainers are properly secured.
  • Inspect the rear brake calipers and connections for leaks. 
  • If inspection reveals any concerns, DO NOT attempt to drive the vehicle. See your authorized Polaris Service Center. 

4. Take a look at the brake pads and rotors. Always allow the brakes to cool completely before inspecting to prevent the risk of burns.

  • Check the brake pad thickness using a suitable tool. Be sure to check the thickness on the inside pads as well and replace any brake pads that are worn beyond their minimum thickness of  0.040 inches (1 mm). 
  • Use a brake rotor measuring tool to measure the thickness of the brake rotors, and replace the rotors if they are worn below the minimum thickness of 0.170 inches (4.32 mm). 

5. Once the brake system inspection has been completed, the tires can be rotated and reinstalled. Due to different configurations, some wheels may not be able to be rotated. Always pay attention to all markings and directional indicators on the tires. 

6. Rotate the wheels as needed based on wheel configuration. 

  • Install the wheels on the vehicle and tighten the lug nuts until fully seated.
  • Lower the vehicle until the tires begin to touch the ground. This will help keep the wheels in place when torqueing. 
  • Once lowered, torque the lug nuts to specification in a crisscross sequence. Torque aluminum lug nuts to 120 ft-lbs (163 Nm). Torque steel lug nuts to 60 ft-lbs (81 Nm)
  • Safely lower the vehicle completely to the ground.

For more information, see your authorized Polaris Dealer. Find a dealer near you through the Dealer Locator.
Maintenance tips, procedures and specifications can be found in your Owner's Manual.
To find diagrams and replacement part numbers, use the online parts catalog.

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