Pure Tyre mobile tyre fitting van in Norwich

Tyre Definitions

Plain-English tyre information

Tyre Definitions

A straightforward A–Z guide to common tyre terminology, construction, tread patterns, safety features and wheel-related terms.

Select any topic below for a more detailed explanation.

Browse Tyre Terms

Use these guides to understand the wording used when choosing, inspecting or maintaining tyres.

AquaplaningWhat happens when a tyre loses contact with a wet road.Read definition → Aspect RatioUnderstanding the height of a tyre’s sidewall.Read definition → Asymmetric Tread PatternsHow asymmetric tyres are designed and fitted.Read definition → Directional Tread PatternsWhy some tyres must rotate in one direction.Read definition → Energy Saving TyresTyres designed to reduce rolling resistance.Read definition → Inner LinerThe airtight layer inside a modern tubeless tyre.Read definition → Legal Tyre LimitUK tread-depth requirements and tyre legality.Read definition → Out-of-Shape TyreSigns, causes and effects of tyre deformation.Read definition → Porsche N MarkingWhat Porsche-approved tyre markings mean.Read definition → Puncture RepairsWhen a puncture may or may not be repairable.Read definition → Run-flat TyresHow run-flat tyres support limited continued travel.Read definition → Shoulder of the TyreThe area joining the tread to the sidewall.Read definition → SipesSmall tread cuts that improve grip in certain conditions.Read definition → Space-Saver TyreTemporary spare tyres and their limitations.Read definition → Tyre BeadThe reinforced edge that seats against the wheel.Read definition → Tread Void RatioThe balance between tread blocks and open channels.Read definition → Tyre CasingThe internal structure supporting the tyre.Read definition → Tyre Date CodeHow to read a tyre’s manufacturing date.Read definition → Tyre PressureWhy correct inflation pressure matters.Read definition → Tyre SealantWhat emergency sealant can and cannot do.Read definition → Tyron BandsWheel safety bands commonly used on motorhomes and caravans.Read definition → Wheel AlignmentHow wheel angles affect steering and tyre wear.Read definition → Wheel BalancingWhy wheel and tyre assemblies require balancing.Read definition →
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More Tyre Information

Find recommended tyre pressures, understand tyre sizes and read practical safety guidance for cars, caravans and motorhomes.

Tyre-pressure vehicle index Understanding tyre sizes Tyre safety guides

Need Help With a Tyre in Norwich?

For mobile tyre fitting, puncture assistance or roadside tyre replacement, contact Pure Tyre with your location and tyre or vehicle details.

Call 01603 462959 Message on WhatsApp

Out-of-hours emergency tyre fitting is available up to midnight.