Designation and abbreviations

Designation of car tire size

185/65 R14 86T

• 185 – tire’s width in millimetres
• 65 – tire’s height in percentages from the width (in this case 65% from 185 millimetres)
• R – designation of radial tire
• 14 – wheel’s diameter in inches
• 86 – load index (in this case the maximum deadweight of the tire is 530 kg)
• T – speed index, maximum speed on which a tire can carry corresponding load index; in this case it is 190 km/h

Designation of motorcycle and ATV tire size

23 x 7.00 10

• 23 – tire’s general height in inches (584 mm)
• 7.00 – tire’s width in inches (178 mm)
• 10 – wheel’s diameter in inches

1 inch=25,4 mm

Abbreviations linked to tires

• AT – tire with the all-terrain pattern
• C – Cargo tire (Cargo)
• FR – Tire with rim protection
• ML – tire with a protection strip on tire’s side
• M + S – Mud (off-road) and snow (winter) tire
• OWL – accentuated with white letters
• RF – reinforced tire, RF=XL
• XL – tire with increased or extra loaded deadweight; XL=RF
• AD – aluminium stud
• DD – stud with diamond geometry
• OD – oval stud
• SC – soft/northern armour compound
• SD – steel stud