What Does Rim Backspacing Mean?

The backspacing is determined by measuring the distance between the wheel's mounting surface on the back of the wheel and the outer lip of the wheel. Like offset, each wheel's backspacing depends on the vehicle's size and design. To measure this distance, lay the wheel down with the back side of the wheel facing up.

What does wheel backspacing do?

Wheel Backspacing

Backspacing is an older system of measurement to determine how deep the mounting pad is located in the wheel. Correct backspacing allows enough room for the suspension, brake, and steering systems to operate without interference from the wheel.

What offset is 3.75 backspacing?

A 15x10" w/3.75" backspace OTOH will be more like -38mm offset.

Alexander Ross

Alexander Ross

Gaming, Esports & Interactive Media Writer

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.