100 is the width in millimetres of the tyres cross section.
- Aspect Ratio
90 is the Aspect Ratio, it is the ratio of the sidewall height to the cross section width.
Radial construction.R stands for radial-ply construction.
16 inches, stands for the diameter of the wheel that the tyre is designed to fit.
Tyre upsize options for Night Dragon 100/90 R16 Tubeless
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