Wheel Spacer Calculator — Calculate Wheel Fitment and Track Width

Wheel Spacer Calculator

Calculate the perfect wheel spacer size for your vehicle. Determine track width changes, fitment adjustments, and clearance requirements for optimal wheel spacing and improved vehicle stance.

Step 1: Vehicle & Wheel Specifications

245mm

Understanding Wheel Offset

Offset is the distance from the wheel’s mounting surface to the centerline of the wheel. Positive offset means the mounting surface is toward the outside (street side) of the wheel.

Step 2: Spacer Specifications

15mm

About Wheel Spacers

Wheel spacers push your wheels outward, improving stance and potentially allowing for larger brakes or better suspension clearance. Always use hubcentric spacers for optimal safety and vibration reduction.

Wheel Fitment Results

Summary
Spacer Comparison
Wheel Position

New Effective Offset

30mm
15mm reduction from original 45mm offset
Track Width Increase
30mm total
Wheel Poke/Inset
+12mm poke
Spacer Thickness
15mm
New Clearance
-8mm inner

Safety Recommendations

Always use longer wheel studs or bolts when installing spacers thicker than 5mm. Ensure proper torque specifications (usually 90-120 Nm) and re-torque after 50-100 miles. Hubcentric spacers are strongly recommended for optimal safety.

Spacer Thickness Comparison

Spacer Thickness New Offset Track Width Increase Wheel Poke/Inset

Wheel Position Visualization

Wheel Spacer Formula

New Offset = Original Offset – Spacer Thickness

Track Width Increase = Spacer Thickness × 2 (if installed on both sides). Wheel poke/inset is calculated based on wheel width, offset, and spacer thickness relative to fender position.

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