Tire crown and cross-sectional profile
5 posts
Comparing Motorcycle Tire Crown Profiles: Sidewall Numbers and Shape
Learn how to interpret motorcycle tire sidewall markings and compare crown profiles. Understand width, aspect ratio, rim diameter, and how they affect tire shape, dimensions, and fitment.
Tire Cross-Sectional Profile: Understanding Its Shape and Dimensions
How to read tire sidewall size numbers, calculate sidewall height, diameter and circumference, and why calculated geometry differs from real fitment.
Tire Crown Radius: Meaning, Measurement and Calculation
What tire crown radius means, why it is not printed on the sidewall, and how to measure it with a straightedge and calculate it with the chord and sagitta formula.
Tire Shoulder Shape: Rounded and Square Profiles Explained, Starting With the Sidewall Numbers
How to read tire sidewall numbers, how width, aspect ratio and rim diameter shape the cross-sectional profile, and how rounded and square tire shoulders differ.
How Rim Width Affects Tire Cross-Sectional Profile
How rim width changes a tire's mounted section width, crown shape and sidewall curvature, plus how to read sidewall numbers and estimate width with a simple chart and calculation.