Getting the Right Wheel Fit

Thursday, April 29, 2010 by Porter Pryde
I often get asked why our website requires you to shop for a wheel by vehicle. Why can't you select a bolt pattern to see what wheels are available? Quite simply, the correct bolt pattern is a small piece in the wheel fitment puzzle and alone, does not guarantee a fit.

Other items we measure or verify:

Below is a diagram showing the relative position of the main suspension and brake components and the potential points of contact with the wheel.

 component clearance  

As you can see, the wheel diameter, wheel width and wheel offset all contribute to the placement of the wheel on your vehicle. The offset of a wheel is a description of the location of the mounting surface compared to the wheel center. For example, an 8" wide wheel with a zero offset would have the mounting surface exactly in the center. A positive offset moves the wheel toward the center of the vehicle and a negative offset moves the wheel outboard of the vehicle.

You may have noticed that when you do view wheels by vehicle, you may see a range of offsets for your wheels. Which one is right? It is not uncommon for wheels fitted to the same vehicle to have slightly different offsets. This is particularly true when the wheel widths differ.
 
You can be confident that when you shop for wheels by vehicle on our web site, the wheel will fit your vehicle with no problems, rubbing or obstruction. If you want fitment confirmation before you buy, just give us a call.

Comments on Getting the Right Wheel Fit

Monday, June 7, 2010 by Reza:
Hello, I have a 2006 bmw 330cic and i would like to know what is the min off set i can run with 245/35/19 tires on the rear. + 35?
Saturday, August 21, 2010 by Gerard:
Hi, I have an '06 bmw 330i w/ sport package. What size spacers would I need to push my stock 18" wheels out further without rubbing the fenders?
Monday, August 23, 2010 by Porter:
Gerard, Tire Rack does not offer spacers for wheels we do not carry. We have found that in some cases spacers do not fit correctly unless they are specifically designed for the wheel. The back and hub of a wheel is a complex shape with a variety of angles and curves. Any interference or mismatch can cause the wheel to loosen from the hub and the wheel can come off while driving. Finding lug hardware that is correct for the new spacers is also difficult. If they hardware is too long it can damage the hub of the vehicle if too short the wheel will not be properly secured. When engineered for a vehicle and wheel spacers work without issue.
Tuesday, April 19, 2011 by Ron Nemmer:
I am building a trailer and have a 1990 GMC axle with drum brakes. I am matching wheels from my late model GMC truck. The rims are just hitting the drum,Is there a 1/4" spacer to move out rim" 8 lug wheels.
Thursday, March 8, 2012 by Paul Schad:
Just wondering if i can put 17" aftermarket rims from a 08 ford 250(8 bolt)onto a 06 Ram 17" (8 bolt) are the bolt patterns the same and do i need spacers?

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