Compare wheel offset, backspacing, inner clearance, outer position, poke, inset, and wheel width changes. Use this wheel offset calculator to estimate how a new wheel setup will sit compared with your current wheels.
Compare wheel fitment:
Enter your current and new wheel width and offset to compare inner clearance, outer poke, backspacing, and fitment changes.
Backspacing:
Calculates the distance from the mounting pad to the inner edge of the wheel.
Outer poke:
Shows how much farther outward the new wheel will sit compared with the current wheel.
Inner clearance:
Shows how much closer or farther the new wheel will sit toward suspension components.
A wheel offset calculator helps estimate whether a new wheel setup may fit before buying wheels.
It can help compare wheel poke, suspension clearance, fender clearance, spacer impact, backspacing, tire width changes, and overall wheel fitment.
Your result shows current and new wheel backspacing, outer position, inner clearance change, outer poke change, effective offset after spacer, tire width effect, and estimated fitment status. These are estimates based on the wheel and tire values you enter.
Wheel offset is the distance from the wheel centerline to the mounting surface. Positive offset moves the wheel inward, while lower or negative offset moves the wheel outward.
Backspacing is the distance from the wheel mounting surface to the inner edge of the wheel. More backspacing usually means the wheel sits farther inward.
A spacer lowers the effective offset by the spacer thickness. For example, a +35 mm wheel with a 10 mm spacer acts like a +25 mm offset wheel.
Yes. Offset can affect clearance near suspension, brakes, fenders, liners, and body panels. Actual fitment also depends on tire size, wheel width, camber, ride height, and vehicle clearance.