2655 reviews
Driving Theory 4 All

Tyres on cars, light vans and trailers must have a continuous tread depth of at least 1.6 mm. How much of the tyre must have this depth of tread?

The central three-quarters of the width of the tyre
Correct answer

DVSA explanation

Your safety and that of others may depend on the condition of your tyres. You must check that they're correctly inflated and have sufficient tread depth. The legal minimum tread depth for cars is 1.6 mm. This depth should be across the central three-quarters of the breadth of the tyre and around the entire circumference.

Want more free practice?

Take a free ADI Part 1 practice theory test

Ready to test yourself on the latest DVSA revision questions?

Get full ADI Part 1 theory test practice

Continue your free practice

More free ways to get ready for your DVSA ADI Part 1 theory test.

Take a free ADI Part 1 mock theory test Take a free ADI Part 1 hazard perception test Take a free road signs practice test
Not what you were looking for?
Find out what we offer for every DVSA theory test by selecting the theory test you want to prepare for.
Car
Theory Test
Motorcycle
Theory Test
ADI Part 1
Theory Test
LGV
Theory Test (part 1a and 1b)
LGV CPC
Module 2 Theory Test
PCV
Theory Test (part 1a and 1b)
PCV CPC
Module 2 Theory Test

Industry leading reviews from 2655 verified buyers...

Read More Reviews
Driving Theory 4 All Reviews
Driving Theory 4 All on X

Keep up to date with us on social media...

Want your theory test booking and revision together? πŸ“…πŸš— Our Β£49 car and motorcycle package includes the Β£23 DVSA test fee, theory test practice and eligible unlimited re-sits. T&Cs apply. See the package πŸ‘‡ https://t.co/X7zRfxQpRy #booktheorytest
12 hours ago
Got a theory test question wrong? πŸ“ Don't just remember the answer. Read the explanation so you understand why it's right. Try our free theory test questions and answers πŸ‘‡ https://t.co/67K9g2c8o5 #theorytestpractice
12 hours ago
What is a contraflow system? πŸš§πŸ›£οΈ It’s a temporary arrangement where traffic flows differently from normal, often during motorway or dual carriageway roadworks. Learn what to expect πŸ‘‡ https://t.co/SgC8LD44Ds #theorytest #theorytestpractice
1 day ago
Looking to book a theory test? πŸ“…πŸš— Our Β£49 car and motorcycle package includes your DVSA theory test booking, web and app revision and eligible unlimited re-sits. See what’s included πŸ‘‡ https://t.co/X7zRfxQpRy #booktheorytest #theorytest
1 day ago
Need hazard perception test practice? πŸ‘€πŸš— Try a free hazard perception test with instant scoring feedback and choose the test type you’re preparing for. Start practising πŸ‘‡ https://t.co/WhqbFkSkWa #hazardperception #theorytestpractice
2 days ago
When can you take your theory test? πŸ“…πŸš— Most learner drivers can take it from age 17 once they have a valid provisional driving licence. You can start revising before then. Read the guide πŸ‘‡ https://t.co/uCYuknKBql #theorytest #drivingtheorytest
2 days ago
Ready to check your PCV theory knowledge? πŸšŒπŸ“ Take a FREE PCV mock theory test, get instant feedback and find out which topics need more revision. Start the test πŸ‘‡ https://t.co/AxWuuty8Xi #PCV #mocktheorytest
3 days ago
Do you know your reflective studs on a motorway? πŸ›£οΈ White studs mark lanes and red studs mark the left edge. What do the other colours mean? Revise motorway studs πŸ‘‡ https://t.co/HJVVIz7mFy #theorytest #theorytestpractice
3 days ago
How much is a theory test in the UK? πŸ’· A car or motorcycle DVSA theory test costs Β£23. Fees are different for HGV and PCV tests. See the current theory test costs πŸ‘‡ https://t.co/zShHUKpG0b #theorytest #drivingtheorytest #theorytestpractice
3 days ago
Training to become a driving instructor? πŸš—πŸ“š Prepare for the ADI Part 1 theory test with practice covering the knowledge you’ll need for the multiple-choice and hazard perception sections. Start revising for the ADI Part 1πŸ‘‡ https://t.co/f6XgdmQFxG #ADI #theorytest
4 days ago
What is a puffin crossing? 🚦🚢 Puffin crossings use sensors to detect pedestrians and adjust signal timings while they cross. Brush up on puffin crossing lights, signals and theory test questions πŸ‘‡ https://t.co/HSqCXTdB4b #theorytest #puffincrossing
4 days ago
Think you’re ready for the HGV theory test? πŸš›πŸ“ Take our FREE HGV/LGV mock theory test and see how you get on before the real thing. Start the mock test πŸ‘‡ https://t.co/p6jyUN7ItJ #hgvtheorytest #lgvtheorytest
4 days ago
Ready to test your motorcycle theory knowledge? πŸοΈπŸ“ Take a FREE motorcycle mock theory test and see which areas need more revision before test day. Start here πŸ‘‡ https://t.co/cRYyEOqksc #motorcycletheorytest #mocktheorytest
5 days ago
Preparing for your car theory test? πŸš—πŸ“š Try free car theory test practice with DVSA-style questions, instant marking and explanations to help with your revision. Start practising πŸ‘‡ https://t.co/HPszPXchBF #cartheorytest #theorytestpractice
5 days ago
What is the theory test pass mark? βœ… For car and motorcycle tests: πŸ“ Multiple choice: 43/50 πŸ‘€ Hazard perception: 44/75 You need to pass both parts. https://t.co/8oP2dtoPgl #theorytest #theorytestpractice
5 days ago
How ready are you for the car theory test? πŸš—πŸ“ Take a FREE 50-question car mock theory test and see how your score compares with the real pass mark. Start your mock test πŸ‘‡ https://t.co/rvl4V1Xkt2 #cartheorytest #mocktheorytest
6 days ago
Dual carriageway or motorway? πŸ›£οΈ They can look similar, but the rules and road layout differ. Learn the difference between a dual carriageway and motorway, including speed limits πŸ‘‡ https://t.co/7JvfSU0Vvq #theorytest #drivingtheorytest
6 days ago
How long is a theory test valid for? βœ… Your theory test certificate is valid for two years from the date you pass. If it expires before your practical test, you’ll need to retake it. Find out more here πŸ‘‡ https://t.co/A9ix1I8SNf #theorytest
6 days ago
Need some HGV theory test practice? πŸš› Try free HGV/LGV theory test questions and check the explanations as you work through them. Start practising πŸ‘‡ https://t.co/IKXDpIYzwu #hgvtheorytest #theorytestpractice
1 week ago
What age can you start driving in the UK? πŸš— For most people, you can drive a car from 17 and apply for a provisional licence from 15 years and 9 months. Read the full guide πŸ‘‡ https://t.co/NvLgXYhN3a #learnerdriver
1 week ago