<p>When you go to buy tyres, you’ll see markings on your existing tyres like <strong>205/55R16 91V</strong>. Understanding what these mean helps you get the right match — not just a guess.</p><ul><li><strong>205</strong> — Width in millimeters (from sidewall to sidewall)</li><li><strong>55</strong> — Aspect ratio (height of sidewall as a percentage of width)</li><li><strong>R16</strong> — “R” = Radial construction, “16” = Rim diameter in inches</li><li><strong>91</strong> — Load index (how much weight the tyre supports)</li><li><strong>V</strong> — Speed rating (maximum safe speed)</li></ul><p>For example: <i>A tyre marked 225/45R17 94W</i> means width = 225 mm, aspect = 45%, fits 17-inch wheels, load rating = 94, speed rating = W.</p>