toolbox · 04
wheel offset & backspacing
offset to backspacing and frontspacing, plus how a spacer changes effective offset and poke.
Wheel offset, backspacing & spacers
Backspacing
6.38"
Frontspacing
3.62"
Offset
35 mm
Backspacing = (rim width + 1") / 2 + offset. A spacer pushes the wheel outboard, lowering effective offset and poking it out by the spacer thickness per side. Confirm hub, stud length, and fender clearance before fitting spacers.