Tyres
What is the legal minimum tread depth for tyres?
The minimum tread depth is 1.6 mm for cars and trailers, 1 mm for motorcycles and 0.5 mm for mopeds.
The legal minimum is 1.6 mm for motor vehicles and trailers, 1 mm for motorcycles and 0.5 mm for mopeds. These are the thresholds in Article 237 of the Italian Highway Code Regulations; for safety, consider replacing tyres before they reach them.
The statutory minimums
Article 237 of the Italian Highway Code Regulations sets the minimum depth of the main tread grooves: 1.6 mm for motor vehicles and trailers, 1 mm for motorcycles and 0.5 mm for mopeds. So cars and vans must have at least 1.6 mm; the minimum for a motorcycle is 1 mm and for a moped, 0.5 mm.
The legal limit is a minimum threshold, not a guarantee of optimum performance. Wet grip, braking and the ability to clear water can deteriorate before the tyre reaches the minimum. Also consider age, cuts, deformation and uneven wear. A damaged tyre should be assessed by a tyre specialist even if the tread looks deep.
Measure accurately
Use a suitable tread-depth gauge or ask a professional to check it. Inspect several points around the tyre and across the tread, not just the most visible area; concentrated wear may indicate incorrect pressure, wheel alignment or a mechanical problem. Built-in tread-wear indicators help identify the limit, but do not replace an accurate measurement.
If a tyre is close to the threshold, plan to replace it before a long journey or the rainy season. Do not wait until the indicator is completely level with the tread surface. Choose replacement tyres with compatible characteristics and follow the manufacturer’s guidance on size, load index and speed rating.
After replacement
Have the fitment, balancing and pressure checked, and keep the paperwork. If you are replacing only a pair, ask the tyre specialist which axle is safest for your vehicle; do not decide based only on visible wear.
Cars and trailers must have at least 1.6 mm of tread; the minimum is 1 mm for motorcycles and 0.5 mm for mopeds. Measure the main grooves at several points because wear may be uneven. If a tyre is near the limit or has cuts or bulges, have it checked and replace it in good time.
Quiz Patente Ufficiale offers theory chapters, timed test quizzes and error review; ask a professional to assess tyre wear and replacement.
Frequently asked questions
What is the minimum for each vehicle category?
1.6 mm for motor vehicles and trailers, 1 mm for motorcycles and 0.5 mm for mopeds, under Article 237 of the Italian Highway Code Regulations.
Is it safe to wait until the tread is exactly at the minimum?
The minimum is a legal requirement, not a performance target. Plan to replace tyres before wear or damage compromises safety.