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How to measure lug spacing. The distance is measured differently depending on the layout. The bolt pattern measurement is simply the number of lugs and the distance between opposite wheel studs. Larger vehicles such as cadillac’s may come with a 5x 5″ or the most.

If you don’t have a lug stud on hand, then simply stick the depth probe from the vernier in. Extend the ruler directly across the center of the wheel to the adjacent lug to. To confuse things, gm has offered car axles that were of 5 lug designs in more thana one spacing configuration.

You can estimate the measurement by using a straight line from the backside of. Be sure that you skip one bolt when. For 5 lug wheels its only slightly more complicated then the 4, 6, or 8 lug measurement.

Choose any lug bolt and measure the distance between the back of one lug to the center of another that is directly across from it. To measure wheel rear spacing (or backspacing), place the wheel face down and lay a straight edge across the back of the wheel and measure down to the mounting pad of the wheel to. If your watch has a leather strap already, you can just check the size of your old strap and measure the width of it between the watch lugs.

Subtract e from t which will give us our wheel thickness measurement that we will call “w”. You measure from the back of one lug (skip to next lug as shown) and to the center of that. This varies greatly in millimeter, and yes we use millimeter never inches or the imperial route in this game.