https://autojosh.com/4-warning-signs-need-new-tires/

obafemee80:
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Recognizing the signs of defective tires is very important for your safety,since tires are the key factor that affect a car's handling and braking.Defective tires mean you are at the danger of complete tire failure and serious car accidents.

A defective car tire isn't usually a sign of bad driving,but rather something inevitable after driving for thousands and thousands of miles. Tires get old and worn down after some time, and when they do,you better be aware of it. Performing tire regular checks is simple and easy,but you need to know what the warning signs are.

The following are the top 4 warning signs that mean you need new tires:

Nice one. You should have included pictures though.

1)Cracks or cuts in the sidewall
Tire sidewall failure can lead an unexpected collapse and blowout of the tire.Cracks in the sidewall may also be attributed to the use of defective or insufficient materials during production.Do a visual check and look for cracks or cuts in the sidewall.If found,replace them immediately. 

2)Bulges and blisters on the tire
If the outer surface of the tire becomes weak,bulges and blisters will occur and will extend outward from the rest of the surface.Keep an eye on the tire bulges and blisters,because these can cause a sudden blow out of the tire.Bulges and blisters are clearly visible and can be noticed easily. 

3)Unusual vibration
There are a number of causes to unusual vibration.For example,the tires may be misaligned or unbalanced.It could also mean that there's some sort of internal problem in the tire itself.Regardless of the cause,the vibration could damage the tire and endanger your safety.If you notice too much unusual vibration,have the car checked by a mechanic as soon as possible.

4)Excessively worn tread
This one is easy to fix because most modern tires have tread-wear indicator bars across the tread.These bars are invisible when the tire is new,but they gradually begin to appear as the tread wears down.When the tread wears down to the tread-wear indicator bars, it's time for new tires.

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