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Wheel Nut / Installation Guide

Note: The information provided is intended for reference purposes only. To ensure proper wheel nut or wheel bolt selection, please refer to the vehicle or wheel manufacturer’s specification or verify the stock wheel nut or wheel bolt. TPi is not responsible for use of incorrect nut/ bolt or incorrect installation.

  1. It’s very important to verify that the fastener match the thread diameter, pitch and seat; otherwise, the improper specification may result in severe damage, and could cause a dangerous condition. Please verify wheel nut seat types below.
  2. Lug Nut must be installed in a progressive crisscross pattern (as shown below) to have uniform pressure and alignment. Apply torque evenly by repeating the pattern until recommended installation torque is achieved.
  3. Make sure that cone/ radius type lug nut seating surface is marked by the wheel. If seating surface is not marked by the wheel, the lug nut may be bottomed out on the stud. “Bottomed out” means the closed end of the lug nut resting on the stud, and the bottom of the nut fails to contact the wheel. It’s extremely dangerous and unsafe because the clamping force is not being applied to the wheel.
  4. Make sure that the shank length and diameter of shank type lug nut are matched, and verify that the washer is tight on the wheel. Check for gaps between wheel, washer and lug nut. If there are gaps and the washer is loose, the lug nut may be bottomed out on the stud, or the shank has bottomed on the hub assembly.
    “Bottomed out” means the closed end of the lug nut resting on the stud and the bottom of the nut fails to contact the wheel, or the shank is too long and is resting on the hub assembly which will not allow the washer to tighten to the wheel. It’s extremely dangerous and unsafe because the clamping force is not being applied to the wheel.

Steps:

  1. Verify that wheel nut thread size, seating type (cone, radius, shank) and seating type matches the wheel nut removed. If studs are rusty, clean with a wire brush prior to installing wheel nut. It’s not recommended the use of oil, grease, or lubricants on studs. Thread must be free from corrosion, burrs, rust, fractures and damaged threads
  2. Replace one nut at a time. Start installing nut by hand and snug tight with a wrench. Repeat every lug nut on the wheel. Minimum thread engagement must be long enough to thread a length equal to the thread diameter. Example: M14x1.5 nut must thread into the lug nut a minimum of 14mm of thread engagement.
  3. Install lug nut in a progressive crisscross pattern until recommended installation torque is achieved. For final tightening, using a torque wrench or socket is recommended.
  4. Lug Nut should be re-torque after 25 miles of driving (40 kilograms).

Note: Impact wrench usually cannot be set and/or maintain proper pressure to reach proper installation torque and should not be utilized for lug nut installation. Use of impact wrench may result in uneven torque or over-torque of lug nuts, which could damage studs or wheels.

Some Tips

  1. Before you begin to install wheel nut, please clean and inspect all stud threads and mounting surfaces. If studs are rusty, clean with a wire brush prior to installing wheel nut. It’s not recommended the use of oil, grease, or lubricants on studs. Thread must be free from corrosion, burrs, rust, fractures and damaged threads. Corroded, stripped, damaged, or if any fractures on thread are found, be sure to replaces the studs.
  2. It’s strongly recommended to use a calibrated torque wrench to achieve proper torque specifications.
    1. Find your vehicle owner’s manual’s torque specification for proper lug nut tightening.
    2. If there’s no torque specification specified on vehicle owner’s manual, please check with the aftermarket wheel manufacturer for a specification.
    3. If none of the aforementioned sources can provide the specification, using the following guidelines:

Wheel Bolt Installation Guide

Note: The information provided is intended for reference purposes only. To ensure proper wheel nut or wheel bolt selection, please refer to the vehicle or wheel manufacturer’s specification or verify the stock wheel nut or wheel bolt. TPi is not responsible for use of incorrect nut/ bolt or incorrect installation.

  1. It’s very important to verify that the fastener match the thread diameter, pitch and seat; otherwise, the improper specification may result in severe damage, and could cause a dangerous condition. Please verify wheel bolt seat types below.
  2. Most original equipment stud or bolt thread sizes should be specified in the vehicle owner’s manual or an available application guide can be used as a reference. The diameter of the stud is measured at the outer edges of the threads. “Thread Pitch” for non-metric applications refers to the number of threads per inch; for metric, it is the distance in millimeters between threads. Example: 1/2”-20 means the diameter is 1/2 inch and the pitch is 20 threads per inch. M14x1.5mm means the diameter is 14mm and the pitch is 1.5mm.
  3. Make sure the thread length of lug bolt has should not be passed through the hub too far, causing damage to other vehicle parts, or the thread length of lug bolt should not be too short, which will result in lack of engagement and an unsafe condition.

Steps:

  1. Verify that wheel nut thread size, thread length, seating type (cone, radius) and seating type, thread length matches the wheel bolt removed.
  2. Replace one bolt at a time. Start installing bolt by hand. Repeat every lug bolt on the wheel. Minimum thread engagement must be 5- 1/2 complete 360 revolutions. It’s not recommended the use of oil, grease, or lubricants on threads.
  3. Install lug bolts in a progressive crisscross pattern until recommended installation torque is achieved. For final tightening, using a torque wrench or socket is recommended.
  4. Lug bolt should be re-torque after 25 miles of driving (40 kilometers).

Note: Impact wrench usually cannot be set and/or maintain proper pressure to reach proper installation torque and should not be utilized for lug nut installation. Use of impact wrench may result in uneven torque or over-torque of lug nuts, which could damage studs or wheels.

TPi Hub Centric Ring

How to determine the correct hub centric ring

  1. Find the aftermarket’s wheel bore size. Wheel bore size = Hub Ring Outside diameter
  2. Find Vehicle hub size Vehicle hub size = Hub Ring Inside Diameter
  3. Check our part number here: Hub Centric Ring Page

Key Code Registration

TPi offers the BEST key code registration in the world
Having trouble keeping the registration card or getting a spare key?? No Worries!! TPi offers you BEST service system. All you need to do is just scan the QR code on the registration card and type in the key code. Our system will memorize your key code. You may trace it when you need it. Please see how to register your key code.

  1. Scan QR Code on TPi Registration card
  2. Type in all the information needed.
  3. A confirmation letter will be sent to customers’ email

Get a Free Key

TPi is the ONLY manufacturer in the world who offers a FREE replacement Key.
Getting irate by losing key and paying extra money to get a spare one?? No Worries!! TPi offers you a FREE replacement key by filling the ordering form. All you need to do is just pay the air freight via Paypal within minutes. Our customer service will deliver you the key afterwards. Please refer the airfreight and payment account below.

  1. The airfreight to the customers' country is not listed here, please contact us for a quote.
  2. The airfreight here is only applied for the key sent by Post Office.
  3. The airfreight is subject to change if necessary.
  4. Paypal account: mail@taperpro.com.tw
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