minimum tread depth nz

LEGAL MINIMUM TREAD DEPTH. Many motorists never check their tyres and rely on the WOF inspection to inform them if their tyres are safe or not.

What Is The Legal Tyre Tread Depth And How Do I Check My Tyres Bathwick Tyres

Regularly check your tyres to make sure there is plenty of tread.

. The road toll has risen again this. Speak Your Mind Cancel reply Name Email Website Δ Book a Service Visit us at Manukau 35 Lambie Drive Cnr Cavendish Papakura 278 Great South Rd Waitakere WOF. The rule now states that a tyre must have a tread pattern depth of at least 15 mm excluding any tie-bar or tread depth indicator strip within all principal grooves that contain moulded tread depth indicators and around the whole circumference of the tyre.

When designing stairs factors to consider are the design parameters given in D1AS1 for. The minimum legal tread depth is 15mm within all principal grooves that contain these moulded tread depth indicators. Find out how to build within the rules.

Most stairs are between 900mm 1100mm wide for comfortable use. New Zealand Building Code Clause D1 Access Routes This Clause is extracted from the New Zealand Building Code contained in the First Schedule of the Building Regulations 1992. The minimum tread depth of 15mm in NZ is too low and there have been calls for it to be raised.

There is a substantial drop in wet breaking performance under 3mm of tread depth. Health and safety on site. Section 47A is in the Building Act 1991.

Furthermore people dont know that this is not the tyre recommended minimum depth of. When the WOF intervals changed one of the worries was the effect on tyre safety. Both requirements will be checked at entry inspection when a vehicle first enters New Zealand and at periodic warrant of fitness or certificate of fitness inspections.

The rule also introduces a new minimum tread depth for winter tyres of 4 mm. What is the minimum requirement for tread on my tyres. Tyres must have a tread depth of 15 millimetres over three-quarters of the surface to pass a Warrant of Fitness.

01 March 2012 Building Code compliance document D1AS1 does not specify a width for common or main private stairways the most common stairway applicable within residential buildings but recommends no less than 850 mm. In the UK it is 16mm. These must be at least 15mm around the whole circumference of the tyre.

This means when conditions are wet older tyres can increase the time it takes for your car to come to a stop. The minimum legal depth is 15mm but the more tread you have the better the grip and the safer youll be. Legally you are required to replace your tyres when your tread depth wears below 16mm however we recommend maintaining a tread depth of at least 3mm to avoid a reduction in tyre capability.

The wear bars show when you only have 15mm of tread left at which point your tyres are on their absolute minimum legal tread depth. Some studies have shown that going from 3mm to 15mm results in a 25 reduction in wet weather braking performance. The minimum legal tread depth is 15mm within all principal grooves that contain these moulded tread depth indicators.

Code Requirements in New Zealand Uniformity Riser height and tread depth should be of a uniform height within a tolerance of 5mm in one flight. That means one in three New Zealandns is driving under illegal unsafe tyre conditions. As your tyres tread wears their ability to disperse water reduces.

What are principal grooves and tread depth indicators and how do I find these. Almost all tyres have wear bars in the groove of the tread so make sure the tyre isnt worn down to the wear bar. Avoid accidents and make site safety a priority.

Almost 90 of all New Zealandns do not know the legally required minimum tread depth of 15 mm. Specify tread depth to be as long as practicable. This requirement is based on tyre manufacturers recommendations for adequate performance in the snow.

The legal minimum tread depth for cars in the UK is 16mm throughout a continuous band comprising the central three-quarters of breadth of the tread and around its entire outer circumference. The faster you go the less effective your tyres will be if the tread depth isnt up to scratch. MD1 or NA first registered or re-registered in New Zealand from 1 October 2002 must have all tyres of the same construction unless the vehicle is incapable of.

Multiply the tread depth by the number of treads to calculate the overall length of the stair. In wet weather tyre tread grooves help to remove water from the contact patch between your tyres and the road surface meaning. If you can replace your tyres at 3mm of tread depth.

The image below shows how much a tyre touches a wet road at different speeds. You can check current stair regulations in full here PDF. Planning a successful build.

Of the 37 per cent who thought they knew the legal minimum 10 per cent thought it was 12mm while 5 per cent thought it was just 10mm. The legal minimum in NZ and Australia is 15mm. Minimum permitted tread depth is 280 mm but with ample space for the stairs 300 mm treads have been selected.

Principal grooves are the wide grooves in the tyre tread which have the tread-depth indicators located inside. 300 13 3900 mm Each tread will also have a 20 mm projection giving a total tread depth of 320 mm but the projection does not add. In the wet or travelling at high speeds your grip and stopping distances are seriously.

Whilst this will increase the footprint of. The minimum tread depth of 15mm in NZ is too low and there have been calls for it. The equivalent section in the Building Act 2004 is section 118.

Drivesure Vehicle Testing - Support local NZ Owned 15mm depth across the width and around the entire circumference of the tyre. Most tyres have moulded tread-depth indicators which are flush with the tyre tread when it has reached the minimum depth. Tyres must have a tread depth of 15 millimetres over three-quarters of.

Damien OCarroll Most tyres have wear indicators like these. For safe healthy and durable buildings all building work in New Zealand must meet certain standards. Virtually all tyres have moulded tread depth indicators.

Width There is currently no specified minimum width in the Building Code. The legal minimum tread depth is 15mm in all the principal grooves around the entire circumference of the tyre. Unless the inspector believes on reasonable grounds that the tyre would not have had the required minimum speed rating for the vehicle in the first place.

These must be at least 15mm around the whole circumference of the tyre. Effective from 29 December 2000 Objective D11c shall. Most stairs are between 900mm 1100mm wide for comfortable use.

How To Make Sure Your Tyre Tread Depth Is Not Illegal