This is a fairly simple one: thread length is simply the length of the thread on your bolt! If you’re replacing the wheel bolts on your car please be sure to accurately measure the thread length on your existing bolt to ensure a correct fit.
However, if you’re planning on putting a set of wheel spacers on your vehicle, you may require longer wheel bolts that are able to pass through the spacer but still provide the proper fit for your wheel.
Many wheel spacer sets will come with longer bolts included, but if you require replacements anyway we offer a wide range of bolt thread lengths all the way from 19mm up to 73mm. To calculate how much extra thread length you’ll need to use with your spacers, simply add the thickness of the spacer to your existing bolts’ thread length.
