BONOSS provide non-normal thickness’s customized service, 3mm-160mm thick, 130mm-350mm dimension is available, OEM/ODM is available. Before ordering, we need to know the thickness you want and the intended PCD conversion. Measuring the wheel gap is the most basic beginning of determining the thickness. Too thick, your tire may impact the fender. Do some measuring will help you find the proper thickness. What size of spacers do I need?