Wheel bolt pattern explained




Wheel bolt pattern explained

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  • For example, a mm bolt pattern means that the wheel has 5 bolt holes equally spaced on a mm circle. This distance is measured across the wheel.

    For example, a 5 on /2 bolt pattern defines a wheel that has 5 bolt holes spaced out evenly along a circle that has a /2" diameter.

    The bolt pattern determines the number and position of the For example: smaller cars have three (Citroën 2CV, Renault 4, some.

    Wheel bolt pattern explained

    Wheel bolt pattern explained

    Plastic rings only provide initial centering, but are not strong enough to help support the wheel in case of high speed pot hole hit. A raised lip or ridge provides an attachment point for older-style hubcaps. Go directly to information about the following topics: You can't measure from the center of one bolt hole to the center of its opposite because there is no opposite bolt hole.

    Wheel bolt pattern explained

    Wheel bolt pattern explained

    Wheel bolt pattern explained

    Wheel bolt pattern explained

    Wheel bolt pattern explained

    How to Measure the Bolt Pattern of a Trailer Wheel | MEXARD.WEBSITE

    The wheel size for a motor vehicle or similar wheel has a number of parameters. The bolt pattern determines the number and position of the mounting holes to allow the wheel to be bolted to the hub.

    As the bolts are evenly spaced, the number of bolts determines the pattern. Compact cars may have four bolts. Most United States passenger cars have five bolts. Pickup trucks, large SUVs , and armored vehicles may have as many as five, six, eight, or ten.

    Wheel bolt pattern explained

    It is not unheard of to find vehicles with even more, such as enormous coal mining transporters that may have twelve. The bolt circle is the notional circle determined by the positions of the bolts. The center of every bolt lies on the circumference of the bolt circle.

    The BCD may be expressed in millimeters or inches, and is usually given with the number of bolts. Many old British cars use 4 x 4". Wheels must be fitted with the correct type of lug nuts on wheel studs , or bolts. Lug nuts aka wheel nuts in British English are usually either flat, tapered generally at 60 degrees and referred to as conical seat , or ball seats, meaning the mounting surfaces are flat, tapered, or spherical respectively.

    Wheel bolt pattern explained

    Most Mercedes have ball lug seats from the factory while most aftermarket wheels have a tapered lug design. Wrong lug nuts for the wheel will not properly center it and cause wobble. Toyota and Lexus have used taper lug nuts for steel wheels and flat seated lug nuts for alloy wheels. Some aftermarket wheels will only fit smaller lug nuts, or not allow an ordinary lug nut to be properly torqued down because a socket will not fit into the lug hole.

    Tuner lug nuts were created to solve this problem by utilizing a special key to allow removal and installation with standard lug wrench or socket. The design of tuner lug nuts can range from bit style to multisided or spline drive, and are sometimes lightweight for performance purposes. A variation is the "locking wheel nut", which is almost universally used for alloy wheels in the United Kingdom.

    One standard lug nut on each wheel is replaced with a nut which requires a special and unique key typically a computer-designed, rounded star shape to fit and remove the nut. This helps to discourage theft of wheels.

    Wheel bolt pattern explained

    However, universal removal tools are available which grip the head of the locking nut using a hardened left-hand thread. The success of these depends on whether there is room to use it in the lug hole, and whether the manufacturer has incorporated a free-spinning outer casing to the lock. Keeping an appropriate tool to lock and unlock aftermarket nuts, and a spare set of nuts, with the spare tire in the boot of the car is recommended by manufacturers. The offset , measured in millimeters, can be negative or positive, and is the distance from the hub-mounting surface to the rim's true centerline.

    A positive offset means the hub-mounting surface is closer to the outside edge of the wheel, i. When selecting aftermarket wheels, a wheel with too little positive offset will be closer to edge of the fender, and one with too much positive offset will tuck inside the fender and be closer to the suspension components. Offset also affects the scrub radius of the steering and it is advisable to stay within the limits allowed by the vehicle manufacturer.

    How To Measure The Bolt Pattern of A 5-Lug Wheel



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