Tyre Sidewall – What's What?

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Tyre Information – What You Need To Know

How to Read Tyre Sidewall Markings

1. TWI Indicator: Indicates where the tread wear indicators are. When flush with the tread, your tyre is (or is about to be) illegal due to low tread.
2. Tyre Size Designation: The number/letters showing your tyre’s size (width, aspect ratio, rim, load, speed). Vital for getting the right replacements.
3. Radial (R): Shows the tyre is radial ply. “R” in the size marking also means radial.
4. Tubeless: The word “tubeless” means the tyre doesn’t require an inner tube. 'E' or 'e' markings also indicate European type approval.
5. Tyre Name: The commercial product or model name.
6. Safety Warning: Always follow pressure and load recommendations. Improper mounting or use can cause serious injury.
7. ‘E’ Marking: All UK tyres since 1997 must have ‘E’ or ‘e’ marking, certifying compliance with EU/UK safety standards.
8. Directional Pattern: Directional or asymmetric tyres have an arrow to show correct rotation. Fitting the wrong way can fail an MOT.
9. Manufacturer’s/Brand Name: Not all tyres are created equal. For expert, impartial advice on the best brands, call 01744 808586.
10. Country of Origin: Indicates where your tyre was made.

Other Tyre Markings

• Reinforced: Means the tyre can carry a higher load than standard (common on vans, estates, caravans).
• M + S: “Mud and Snow” marking for winter treads. On high-speed tyres, load at max speed may be shown.

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