Tire Safety: Expiration Dates

Tire Safety: Expiration Dates

The chronological age of any tire can be found on the tire sidewall by examining the characters following the symbol “DOT”. The last four numbers identify the date of manufacture of the tire to the nearest week. The first two of these four numbers identify the week of manufacture which range from “01” to “53”. The last two numbers identify the year of manufacture e. For tires manufactured prior to the year , three numbers instead of four indicate the date of manufacture. We recommend: All tires including spare tires that were manufactured more than ten years ago should be replaced with new tires, even if they appear to be usable from their external appearance and if the tread depth may have not reached the minimum wear out depth.

Tyre Manufacturing Date Guide. Find Car Tyre Age in Month, Year

Our website uses cookies to place bookings and help us provide a better service. By browsing this site you accept cookies used to improve personalisation and marketing. Find out more in our updated privacy policy or review your cookie settings. To help identify the age of your tyres, each one is imprinted with a coded date which tells you when that tyre was manufactured. The four-digit tyre age code is usually located in a window on the tyre sidewall.

A responsible driver needs to know how to check tyre expiry date in Nigeria; the FRSC impounds cars with expired tyres. See where to find the.

When it comes to buying tyres, most customers will undoubtedly have heard that there is an expiry date — from the date of manufacture — to look out for when making a purchase. However, how true is this notion? On the sidewalls of each tyre, there is a stamp known as the DOT Department of Transportation code, which includes a four-digit figure.

This figure is the manufacture date. Should you find a tyre with a DOT code that has just three digits, the tyre is made before the year avoid these. Referring to our earlier example, this would mean they were made two years ago, around the end of September According to the United States Rubber Manufacturers Association RMA , there is currently no standard to determine the expiry date of tyres, as the damage done to each tyre is based on a number of factors like temperature, load, tyre pressure used, the velocity at which the vehicle is travelling and others.

Be that as it may, the British Rubber Manufacturers Association BRMA does recommend that new tyres that have not been used for six years or more should not be fitted to vehicles, and that all tyres exceeding 10 years from the date of manufacture must be replaced or disposed of. Adding on to this, Michelin states that tyres are not like fruits that go bad if left untouched. When in storage, the tyre faces zero load, but when fitted to a wheel and subjected to air pressure and the demands of driving — braking and accelerating, high speeds, rough roads, sharp objects, heavy loads, changing weather and temperature conditions — these factors have more of an impact on the tyre.

For example, even when a vehicle is stationary, the tyres still have to bear the weight of the vehicle itself. To verify these claims, Michelin conducting tests in three different countries — Germany, Korea and Saudi Arabia — to prove that a tyre that has been stored for three years is still capable of delivering the same level of performance as one that has been freshly supplied from the factory.

Over in Korea, the company compared newly manufactured tyres with those that had been stored for three years, subjecting them to a string of high speed and incremental speed tests. In Germany, the same comparison was done, but the focus was on rolling resistance.

Tyre Identification

Posted by: Ikeokwu Chidozie. The issue of tire explosion has been a recurring news from the Nigerian roads, these tire explosions have led to so many car accidents and it has claimed a lot of lives. Most car users in Nigeria have very little knowledge that expired tires have more possibility of exploding, and some others who consider aging and wearing as a factor for tire explosion still get surprised when they experience tire explosion after purchasing a new tire.

There are a lot of factors that need to be considered when selecting new tires in Nigeria, these factors contribute to safety, and cannot be overlooked because of tire expiration and the hazards it can cause.

The rubber on a car tire degrades over time, and tire warranties can be tied to manufacturing dates. Every tire sold in the United States has a date code stamped.

Tyres are fantastically engineered products. They are the only thing keeping your car in contact with the road come rain or shine. However, like everything else, aging can take its toll on tyres, so it could be time to get yours checked by an expert, such as an NTDA member. However, please be aware, that it is not uncommon, for a tyre manufactured two years ago, for example, to be sold and fitted as new. Providing that the tyre has been stored in optimum conditions to preserve it, has not been exposed to the elements or previously fitted to a vehicle, it should be perfected safe and fit for purpose.

The NTDA recommends that tyres fitted to vehicles over 10 years old are checked for damage, wear and other signs of old age. Many NTDA members recommend that you have your tyres checked if you believe they are over 6 years old.

Replacing tyres

Probably, this problem could have raised its ugly head again! So, in the past, tyre wholesalers have being buying tyres at a cheap price. Probably when the pound loses value!

To read the date on a tire, look near the edge of the rim for a series of characters starting with the letters DOT. This is the Department of Transportation (DOT).

Knowing the age of your tyres and how this affects them is an important part of ensuring both the safety and performance of your vehicle on the road. So how do you determine how old they are and what can you do to maximise tyre life as they age? First up, checking the sidewall will give you some vital information — with it being mandatory that the date of manufacture for all tyres is displayed on the sidewall.

Look for a 4-digit number which records the week and year of production eg. In many cases this date will be displayed after the DOT code. Tyres that do a lot of mileage or work in harsh conditions are very likely to need to be replaced well before they show signs of their age and we know that tyres that work hard need to be regularly checked for tread wear and any other signs that they are no longer optimally safe.

How Old Are Your Tires? Check the Born-On Date

For years, people have relied on tread depth to determine when to replace a tire. If the tread passes the ” penny test , ” they assume the tire still has life, regardless of how old it is, which can be a fatal mistake. Old tires are dangerous, regardless of tread depth. While there’s no federally sanctioned safety guidance on when a tire is too old to be safe, many carmakers recommend replacement at six years from the date of manufacture.

Should dates of manufacture be the same for all tyres changed? It may be unnecessary for tyres to be exactly the same manufacturing date since some common.

Tires are just about the most important part of your car. If they’re in bad shape, the car’s ability to accelerate, stop, and turn in all conditions is greatly compromised. Everybody knows to replace tires when the tread gets down to the wear bar, but what about when they get too old? The rubber in tires deteriorates over time due to UV and environmental exposure. The resulting “dry rot” leaves tire structure brittle and leads to sidewall damage and eventual failure.

This isn’t “Oh I’ll just fill it up and drive on it. As a precaution, the Department of Transportation recommends changing even new-looking tires once they hit 10 years old, and many manufacturers recommend swapping them out at six years old. Of course, this aging is highly dependent on where the tires live. Tires in hot dry climates have much shorter lives than those in moderate, moist climates.

Still, you want to maximize tire life when buying a new set of rubber. Tires in hot dry climates have much shorter lives than those in moderate. Since tires can sit in a warehouse for years, you’ll want to know when the tires were made, rather than purchased, and there’s an easy way to tell.

Tyre Age – How Old Are My Tyres?

Our warranty covers defects in workmanship and material for the life of the tread or 3 years from date of purchase if tyre is purchased within 3 years from date of manufacture or 6 years from date of manufacture if tyre purchased is more than 3 years from date of manufacture , whichever occurs first. We do not cover tyres that are damaged as a result of road hazards, cuts, punctures, impact, tread aggression, uneven wear or quick wear, vehicle irregularity, etc. Michelin does not recommend Changing run flat tyres with standard tyres.

Standard tyres do not have this technology. A bulge or bubble in the sidewall is sometimes the result of damage from coming in contact with a curb, pothole or other objects. Bulge can also happen due to fitting damage in the bead area.

The date of manufacture of any tyre can be found on the sidewall by examining the numbers following the symbol “DOT”.

My dash temperature gauge read 40 degrees, and the freeway was littered with stopped, bonnet-up cars. Then I saw a car and caravan, pulled over to the side of the road. The owner was inspecting the damage, mobile phone to ear. Sad, but no apparent harm done. Not more than half an hour later I spotted a ute towing a boat and trailer.

This time the tyre was disintegrating completely, pieces all over place.

How To Determine The Date Of Manufacturing Of A Tyre

There is no way to tell exactly how long a tyre lasts. After five years or more in use, your tyres should be thoroughly inspected at least once per year by a professional. If the tyres haven’t been replaced 10 years after their date of manufacture, as a precaution, Michelin recommends replacing them with new tyres. Even if they appear to be in a usable condition and have not been worn down to the tread wear indicator.

For original equipment: follow the vehicle manufacturer’s tyre replacement recommendations. How to check the manufacturing date. Look for the DOT number on.

By James Foxall. Do you know how old your tyres are? Probably not, judging by research from Kwikfit which suggests that only 17 per cent of drivers can assess the age of their rubber and then know when it’s time to change. You might not think it’s important but tyres’ performance actually deteriorates as they age.

Roger Griggs from Kwikfit said: “Tyres contain anti-oxidising chemicals to slow the rate of ageing, but they need to be in use for these to be effective. Infrequent use or poor storage can accelerate the ageing process and make tyres unroadworthy. Low mileage, older cars tend to be most at risk from premature ageing. The date your tyres were made will be on the sidewall in the form of four numbers usually preceded by the letters DOT. These numbers represent the week number and year, so will be week 34, Use that information to make sure you’re buying tyres with the longest shelf life possible.

How old are my tires? // How to check tire age


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