Carautonomy — car parts and warning lights explained
Follow
Home
NewDiagnose my car
Articles
MOT Checker
About
Survey
← All car parts
Wheels and Tyres

What are Alloy Wheels / Steel Wheels?

The metal discs that the tyres are bolted to.

ALLOY vs STEEL WHEELSALLOYlight · stylish · priceykerb damage = expensive refurbSTEELheavy · tough · cheapwinter wheel favourite~8 kgvs~12 kg

Simplified animation — not to scale.

In plain English

Wheels are the structural metal discs that the tyre sits on and the hub bolts to. Steel wheels are heavy and tough; alloy wheels are lighter, look smarter and help with handling and fuel economy.

A simple analogy

"Like the rim of a bicycle wheel — if you bend it, nothing else on the wheel can run true."

How it works

The wheel locates the tyre bead against an air-tight rim, then bolts to the hub so engine and braking forces can pass through. Alloys are cast or forged from aluminium alloy; steel wheels are pressed from sheet steel and usually hidden behind a plastic trim.

Signs of trouble

  • ⚠Steering wobble or vibration (a buckled or out-of-balance wheel)
  • ⚠Slow puncture from a kerbed or cracked rim
  • ⚠Visible kerb damage, scrapes or curbing on the lip
  • ⚠Cracks radiating from the bolt holes or spokes
  • ⚠Corrosion under the lacquer causing the tyre to leak at the bead
Rough UK cost

£60 – £150 to refurbish, £100+ to replace

Parts: £80 – £400 per wheel (alloys); £40 – £90 (steel)
Labour: £50 – £120 refurbishment per wheel

Always get a written quote. Prices vary by car, region, and parts brand.

Heads up: Carautonomy is for general guidance only. If your car is showing warning lights or behaving oddly, get it looked at by a qualified mechanic.

Keep exploring

Alternator
The on-board power station that keeps your battery topped up.
EGR Valve
A small valve that recycles exhaust gas to reduce emissions.
Starter Motor
The muscle that turns your engine over when you twist the key.

Find this article useful?

Be first to read new articles directly to your inbox.

*We'll only use your email to send you new articles and updates from carautonomy — nothing else, no third parties. You'll get a confirmation email to verify your subscription, and you can unsubscribe any time.

Carautonomy — car parts and warning lights explained

Helping the UK understand how their cars actually work — one car part at a time.

Explore
  • All car parts
  • Maintenance checks
  • Warning Lights
  • Features Explained
  • EV Transition
  • EV Reality Check
  • About the project
  • Contact us
  • Privacy Policy
Autonomy family
  • Moto Autonomy
  • Bike Autonomy
  • Camper Autonomy
  • More vehicle types coming soon
A friendly note

Information here is general guidance, not a diagnosis. Always speak to a qualified mechanic before parting with cash.

© 2026 Carautonomy