Compare two wheel widths and offsets to estimate inner clearance and outer poke changes.
Current wheel
New wheel
Worked example
Moving from 8J ET35 to 9J ET35 adds about 12.7 mm inboard and 12.7 mm outward because the offset is unchanged and the extra inch of width is split equally.
This is a wheel-position calculation, not a fitment guarantee
Brake caliper shape, spoke design, tyre sidewall width, suspension movement, steering angle and body clearance are not captured by width and offset alone.
Check the complete package
Use the tyre-size comparison alongside this calculator, then verify clearances physically or against reliable vehicle-specific fitment data before purchasing wheels.
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