Wheel Inner Clearance Calculator

How much closer to (or further from) the suspension a new wheel sits compared with the current one.

Formula

Front spacing (poke) = Wheel width (inches)/2 − Offset / ET (mm)/25,4 ; Δ = New − Current

Assumptions

Assumption: a 0.5-inch flange allowance is added, matching most wheel-fitment calculators.

How to read it

A positive change means the new wheel sits deeper toward the strut and control arm — measure the space available on the inside before buying. A negative change moves the wheel away from the suspension but pushes it toward the fender.

Continue with

Next tools

Tires & wheelsWheel Poke CalculatorHow much further out a new wheel sticks past the fender compared with the current one.Calculate →Tires & wheelsWheel Width & Offset ComparisonCompare two wheels: change in poke, inner clearance, offset and width.Calculate →Tires & wheelsWheel Backspacing CalculatorBackspacing in inches and mm from wheel width and offset (ET).Calculate →