2pcs 20mm Wheel Spacer Adapters for Bolt Pattern Conversion Turn wheels with a 5x4.75 bolt pattern into a fit for vehicles with a 5x5 or 5x5.5 bolt pattern with this 2 piece set of 20mm wheel spacer adapters. Each spacer is designed to adapt the vehicle bolt pattern to the wheel bolt pattern while keeping stud thread and center bore specifications consistent. Key benefits Converts bolt patterns quickly and reliably so you can mount wheels that otherwise would not fit. Adds 20mm of offset for extra clearance between the wheel and suspension, calipers, or bodywork without changing wheel selection. Preserves stud engagement with the 1/220 stud thread specification, ensuring correct lug attachment when matched to compatible lug nuts. Precision center bore of 87.1 mm for proper centering on hub surfaces, helping maintain balanced wheel fitment. Important specifications Quantity: 2 pieces Thickness: 20 mm Vehicle bolt pattern: 5x5 or 5x5.5 Wheel bolt pattern: 5x4.75 Center bore (CB): 87.1 mm Stud thread size: 1/220 How this solves common problems Incompatible bolt patterns: Allows use of wheels with 5x4.75 bolt pattern on vehicles with 5x5 or 5x5.5 studs without modifying the wheel or hub. Clearance issues: Provides a modest, controlled increase in track width to clear larger brake components or improve clearance for suspension parts. Wheel fitment flexibility: Enables owners to reuse wheels across different vehicles or swap aftermarket wheels without costly replacements. Practical use scenarios You have a set of aftermarket wheels with a 5x4.75 bolt pattern and want to fit them on a truck with a 5x5 bolt pattern. These spacers adapt the wheel bolt pattern and center bore for correct mounting. Upgrading brake calipers requires extra clearance. The 20mm spacer provides space for caliper and pad clearance while maintaining proper stud engagement. Swapping wheels between two vehicles with different bolt patterns lets you rotate wheel sets seasonally without wheels. Installation notes Verify vehicle hub diameter matches the 87.1 mm center bore and confirm stud thread is 1/220 before installation. Use appropriate lug nuts that match the stud thread and spacer design. Tighten to vehicle manufacturer torque specifications. Inspect fitment after initial installation and retorque as recommended by the vehicle manufacturer or a professional installer. This 2 piece 20mm wheel spacer adapter set is a practical solution when bolt pattern conversion, added clearance, or increased fitment flexibility is required.