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wheel fitment

  • Wheel Tech 101: Measurements

    Wheels may look like glorified circles, but in actuality they are very complex devices that require high-tech, precision engineering processes to ensure that they do their job.  Furthermore, millions of dollars are spent every year by original equipment manufacturers like BMW, Lexus, Audi, Jaguar, Porsche, Ferrari, Infiniti and so on to make sure that every single wheel they put on a car, truck or SUV is durable, dependable, and even stylish.

    So what makes up a wheel?

    Here in Wheel Tech 101, we'll go over the most basic elements of a wheel: its measurements.

    Width and Diameter

    These two are pretty obvious, so we won't spend much time on them.  Suffice it to say, a wheel designated as 17 x 8 is a wheel that's 17 inches in diameter and 8 inches wide.  Those particular measurements might be found on any BMW 3-series, a Jaguar S- or X-Type, Jeep Grand Cherokee SRT8 or Wrangler Rubicon, or a Lexus SC300 or IS250.  And probably a bajillion other vehicles, too.

    Offset

    Wheel offset is simply the distance from the mounting surface of the wheel to the true centerline of the rim.  It's something that's actually pretty hard to measure without some precision tools, but it's not impossible.  Offset comes in positive and negative numbers:

    • Positive offset is closer to the fender well, and means the mounting surface is positioned IN FRONT of the true centerline
    • Negative offset means the wheeel will stick out away from the vehicle, because the mounting surface is BEHIND the centerline of the rim assembly

    Bolt Pattern

    Bolt patterns are usually written like this: 5x112.  The first number (the "5") is the number of bolts that go on the wheel (typically 4, 5, or 6).  The second number is the pitch circle diameter, which measures the diameter of the bolt circle...which, interestingly enough, means different things based on how many bolts the vehicle has.

    For 4- and 6-bolt wheels, you're measuring from the center of one bolt hole to the center of the bolt hole directly across from it.  A 5-bolt wheel requires a little geometry: mentally "draw" a circle running through the centers of each bolt hole, then measure from the center of a single bolt hole out to the imaginary circle that lays between the two opposite bolt holes.

    Center Bore (a.k.a. "Hub Bore")

    These two terms are synonymous, and measures the center hole in the wheel.  This hole is used to center the wheel on the car's hub.  Pretty simple, eh?

    Mass production of wheels means that large center bores are common, so if you are trying to fit one type of BMW wheel on a different model of BMW, you might need to use something called a hubcentric hub ring to prevent or eliminate any vibration or noise caused by there not being a perfect fit.

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    Did this article help you?  Did we miss anything, or mess something up?  Let us know in the comments below, or by contacting us!

  • Wheel Bolt Patterns: Dodge

    First of all, "bolt pattern" is defined in our article Wheel Tech 101: Measurements.  Put simply, it's a measurement -- often written like "5x114.3" -- that tells you two things:

    • The "5" tells you how many bolt holes the wheel has, and
    • The "114.3" indicates the diameter of the bolt circle (see Wheel Tech 101 for more on that).

    Note: if a wheel has two listed bolt patterns, it is NOT an OEM wheel; all OEM wheels only have one bolt pattern.

    This article provides a comprehensive listing of Dodge bolt patterns. Check out our other Fitment articles for other brands.

    If you are looking for a particular Year/Model, please take the following steps:

    1. Press the [CTRL] key and the [F] key at the same time ([CMD] + [F] if you're a Mac user).
    2. A search box will open (usually at the bottom or top of your browser).
    3. Type in the MODEL that you are looking for (i.e. "Shadow").
    4. When you find your model, look at the header immediately above to make sure you're in the right Year for that Model.

    5 x 4 (same as 5 x 100)

    1994-2004 Neon - All 5 Lug Models

    1986-1994 Shadow

    1986-1994 Daytona

    1995-2009 Stratus

    6 x 4.5 (same as 6 x 114.3)

    1998-2003 Durango

    1991-2004 Dakota

    1992-2002 ViperRT/10 Roadster

    1996-2002 Viper GTS

    1999-2002 Viper ACR

    2003-2006 Viper SRT-10

    2006 Viper SRT-10 coupe

    2009-2009 Viper SRT-10

    2009-2009 Viper ACR

    5 x 5.5 (same as 5 x 139.7)

    1985-2003 Ram Van - All 5 Lug Models

    1994-2009 Ram - All 5 Lug Models

    2004-2009 Durango - All models

    5 x 4.5 (same as 5 x 114.3)

    1994-2003 Intrepid - All Models

    5 x 115

    2004-2009 Magnum - All Models

    2004-2009 Charger - All Models

    2009-2010 Challenger - All Models

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    www.LAWHEEL.com or call

    1-800-584-2832 (toll free in the U.S.) or (818)-626-8867

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