Glossary
Dual spacing
The distance between the centerlines (or adjacent sidewalls) of two tires mounted in a dual assembly. Minimum dual spacing must be maintained to prevent sidewall contact under load.
Check dual spacing when switching tire sizes or profiles. Inadequate spacing allows sidewall-to-sidewall contact that generates heat and abrasion.
Real-World Use
A shop technician installing wider replacement tires on a trailer axle measures the resulting dual spacing and confirms it meets the tire manufacturer's minimum before releasing the trailer.
What to Pair It With
Read this term with the full tire sidewall, vehicle rating information, manufacturer documentation, and the actual condition of the tire.
This site is for general information only. It does not replace professional tire service, DOT compliance advice, tire manufacturer instructions, vehicle manufacturer recommendations, or fleet policy.