Wheel Offset Visualizer
Calculate exactly how your wheel's inner clearance and outer poke will change when you adjust width and offset.
Direct Answer
When changing wheel width and offset, you must calculate the change in backspacing (inner clearance) and frontspacing (outer poke) to ensure it fits in your wheel well without rubbing.
Current Wheel
New Wheel
Fitment Changes
Inner Clearance
Outer Poke
Visualization (Top-Down View)
The diagram is a simplified top-down approximation. The dashed line is the current wheel, the blue solid box is the new wheel. Left is inboard (strut), right is outboard (fender).
Fitment Risks to Check
- Strut Clearance: You lose 2.7mm of clearance on the inside. Ensure the new wheel won't rub against the suspension strut or inner fender well.
- Fender Rub: The new wheel will poke out 22.7mm further. Verify that the outer lip won't hit the fender under suspension compression or while turning.
- Tire Size matters: This calculator only shows the wheel changes. A wider tire or different aspect ratio on the new wheel can significantly alter actual clearances.
Assumptions we made
- Calculations are based solely on wheel dimensions, ignoring tire bulge/stretch
Important limitations
- Does not guarantee that the wheel will fit your specific vehicle
- Does not account for brake caliper clearance
Step by step
How to use this tool
- 1
Enter your current wheel width and offset — these numbers are stamped on the back of the wheel.
- 2
Enter the new wheel specs you are considering.
- 3
Review the inner clearance and outer poke changes. Negative inner clearance means the wheel may rub the suspension; excessive poke means it will stick out past the fender.
Decision context
What this calculator helps you decide
Use Wheel Offset Visualizer when you need a quick, structured answer before you spend money, approve work, prepare a trip, compare options, or share information with a buyer, seller, shop, lender, or insurer. Enter the inputs you already know, review the result, then use the assumptions and limits below to decide what to check next.
Inputs and outputs
Start with the inputs that most affect this decision: Current Wheel Width, Current Wheel Offset, New Wheel Width, New Wheel Offset. The output is meant to make the next step easier to compare, not to replace a written quote, inspection, policy document, loan disclosure, or local rule.
The main outputs are Inner Clearance Change, Outer Poke Change. If one input is uncertain, change that value and compare the result again before treating a single estimate as final.
Best-use cases
This page is built around the search intent: calculate wheel offset changes, wheel fitment calculator, wheel poke visualizer. It is most useful when you want to narrow a decision, prepare better questions, or avoid missing a cost, risk, fitment issue, paperwork step, or ownership detail.
Keep the assumptions visible while using the result. If your vehicle, location, driving pattern, quote, loan, insurance policy, or listing situation is unusual, use this as a planning screen and verify the final decision with the relevant document, professional, or local requirement.
Methodology
How the estimate works
Inputs, outputs, and calculation logic.
Logic
Calculates the inner and outer edge positions relative to the mounting hub for both wheels, then finds the absolute difference.
Inputs
- Current Wheel Width
- Current Wheel Offset
- New Wheel Width
- New Wheel Offset
Outputs
- Inner Clearance Change
- Outer Poke Change
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