Reference hub
Tire & wheel reference guides
Reference tables and guides for tire and wheel specifications: load index, speed rating, bolt pattern, rim compatibility.
- Tool-linked guides
- Plain-language specs
- Localized references
Size validation Wheel fitment depth Safety and legal checks Ownership and maintenance
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- Tire and wheel glossary
- Tire load index chart
- Tire speed rating chart
- Bolt pattern guide
- Rim diameter guide
- Plus sizing guide
- Plus-sizing fitment study
- Wheel width and offset compensation study
- Tire type guide — P, LT, metric, radial & flotation
- How to read a tire size
- Tire section width guide
- Tire aspect ratio guide
- Wheel offset (ET) guide
- Tire age & DOT date code guide
- Speedometer change from tire size: calculation and limits
- Tire tread depth without a universal safety shortcut
- Summer, all-season or winter tires: choosing by use
- Tire rotation guide
- Tyre pressure: find the correct setting
- Wheel alignment guide
- Run-flat tyres: limits, markings and repair
- Tire storage guide
- Aquaplaning: causes and wet-road precautions
- Wheel balancing guide
- Nitrogen vs air in tires
- Winter driving: tyre and journey checks
- Tire noise: a symptom to document, not a remote diagnosis
- Tire sidewall damage guide
- Tire puncture repair guide
- EU tyre label guide
- Tire load capacity guide
- Tire recycling guide
- Tire compound guide
- Tire tread patterns: sidewall markings control the next step
- EV tires: specification, load and efficiency guide
- TPMS guide
- Mixing tires without hiding the compatibility limits
- Tire warranty guide
- Choosing a tire speed rating for the vehicle and real use
- Tire tread wear indicators and accurate tread checks
- Wheel balancing vs alignment: what is the difference?
- Cold tyre pressure: measurement and a check log
- Tire sidewall markings decoder
- Tire pressure and fuel economy guide
- Tire upsizing and downsizing guide
- Tire wear rate: measure the tire, not a generic mileage promise
- Tire cracking and ageing guide
- Rim types and materials guide
- Tire fitting and mounting cost guide
- Tire retreading guide
- Tire inspection checklist
- Trailer and caravan tire pressure guide
- EV tire speed rating: match the vehicle specification
- MOT tyre requirements in Great Britain
- Spare tire types explained
- Crossply vs radial tires: construction explained
- Rim width and tire fitment guide
- Tire pressure for heavy loads and towing
- Winter tyre rules by country
- Tire size conversion guide
- Are used tires safe? A buyer's guide
- Tire valve types: TR413, TPMS sensors, and metal valves
- Wheel spacers: hub-centric vs lug-centric, legality and risks
- Tire delamination: belt separation, tread chunking, and when to scrap
- Tire bead damage: causes, fitting damage, and why bead faults are unrepairable
- Tire blowout: causes, warning signs, and what to do when one happens
- Low-profile tires: handling, comfort, damage risk, and aspect ratios explained
- Alloy wheel repair: scuffs, cracks, buckles — what can and cannot be repaired
- Tire flat spots: vibration needs inspection, not a road test
- UTQG tyre ratings: what the grades measure
- Tire road hazard warranty: what is covered, what is excluded, and how to claim
- Tire rolling resistance: EU label and evidence guide
- Wheel bolts vs wheel studs: differences, regional standards, torque specs, and safe installation
- Directional vs non-directional tires: how to identify them, fitting rules, and rotation patterns
- Tire overloading: what happens when you exceed the load rating, and how to avoid it
- Tire contact patch: evidence and measurement guide
- Tire heat buildup: pressure, load and evidence guide
- Tire hydroplaning speed: evidence and risk guide
- Tire wear patterns: an inspection clue, not a remote diagnosis
- Tire cornering stiffness and slip angle: evidence guide
- Tire speed rating exceeded: evidence and next steps
- Tire ply rating and load range: what LT tire load ranges mean and how to choose the right one
- Tire aspect ratio and handling: evidence guide
- Summer tires in cold weather: check the exact product
- Tire section width effects: evidence and fitment guide
- Staggered tire fitment: why sports cars use wider rear tires and what it means for tire rotation and replacement