If there is little money, it is better to buy the cheapest new tires than to climb the used market. But if even because of budget new tires the family budget will crack at the seams, choose used rubber by these rules.
Of course, you need to inspect each tire for obvious damage, patches, fungi and so on. There should not be any “hernias”. Tires with “hernias” can not be taken, even if the seller gives a discount – they can be dangerous and do not know how many will be served. No matter what one may say, it is impossible to restore the tire from the “hernia” to the factory characteristics.
But the latches on the tread are common. They should not be afraid. You can drive safely on these wheels. The main thing is that on each wheel there are not more than two punctures, and that the trays do not occupy more than a third of the width of the tire.
See the tire not only from the outside, but also inside (if you take the rubber without the wheels). On the inner side there should be no cracks, cuts and cord damage.
date of manufacture
Look at the production date of the tire. Despite the fact that the tires do not seem to have an official expiration date, all manufacturers unanimously declare that the rubber begins to lose its original properties about seven years after production. The date of production of the tire is always indicated on the sidewall of the wheel. It consists of four numbers, surrounded by an oval (you will not mistake anything). The first two digits indicate the production week, the second two – the year.
Do not forget to pay attention to the remaining protector. More precisely – at its depth. According to the rules, the permissible tread depth of summer tires should be at least 1.6 mm in the most worn out place. I would not recommend buying tires with a tread depth of less than 2.5 mm, because on wet asphalt they are no longer safe. To make it clearer – why, I’ll give the figures: the new tires at a speed of 80 km / h tires are taken away about 25 liters of water per second, second-hand – only 10 liters. That’s why in the beginning I said that any even the cheapest new tire is better than a second-hand one.
Check the depth of the tread can be a special device, an ordinary ruler or caliper. Measure the depth on all wheels in the most worn place. By the way, if the wheels are worn unevenly – this is also not good.
Recently, often used second-hand summer tires with a sliced protector. At first glance, it is difficult to distinguish the chopped tread from the factory protector, but if you look closely, the cut has always unevenness and burrs at the end.
The cut tread is dangerous first of all in that the distance to the cord is reduced, and on any bumpy road or on the curb, the tire may burst. At high speed it’s dangerous, but at low it’s just unpleasant.
It is best to negotiate the purchase of tires next to the tire. Then before you give the seller money, you can try to balance the wheels.
It happens that the wheels in the assembly are sold with bent discs, and sometimes the tires have a defect that does not allow it to be properly balanced.