I'm not sure why you filed this under illegal drugs. Anyways, the answer is yes. If there are cracks on the side of the tire, it has a high likelihood of blowing up while driving down the street. Yes.
The cracks indicate the "rubber" / tire materials are starting to deteriorate and will ultimately fail.
No...Cracks in the rib part of the belt is normal, but if the ribs of the belt has chunks of them missing or the cracks appear on the flat side of the belt replace the belt.
When you look at the grooved side of the belt and you see a lot of cracks or chunks missing going across the face of the belt.
Look on the ribbed side of the belt as it is going over pulleys. If you see cracks it would be wise to replace it.
No, but make sure all 4 tires are the exact same size. No exceptions to this on a 4wd vehicle. Also if the tires are worn badly I would recommend you replace both tires on the same axle at once. The wear difference in a new tire and worn tire on the same axle can cause the vehicle to drift or pull to one side. If your rotate your tires as you should all 4 tires will wear evenly. That way you replace all 4 at the same time which is always the best.
check the side of the tires there should be tire inflation info stamped on tires telling you what maximum tire inflation should be if not average p.s.i. should be about 32
34 PSI, but I the tires should have the suggested PSI written on the side of them.
All the tires should be the same size. If the other tires are in place you should be able to get the size from the other tires. If not the size should be on a plate inside the drivers side door with many other specs.
To find the size of the rim of your car tires, you look on the side of the tire. It should be printed on the side of the tire, or on the inside of the door of the car.
The proper pressure for you vehicle's tires will be listed on the label on the driver side door jamb.The proper pressure for you vehicle's tires will be listed on the label on the driver side door jamb.
Ideally you should have four tires on the car that match. With that being said you can certainly replace your 65r tires with 70r tires. The 70 refers to the width of the tire and a 70 is slightly narrower than a 65. The lower the number the wider the tire. I would not put 1 65 width tire on one side and a 70 width on the other side of the car, they will wear unevenly.
Yes you can, as long as you replace all four tires. Having different sizes tires on the vehicle will ruin the diff as the car believes it is constantly cornering, thus wearing either side at a different rate.
Well, if they are getting wear on one side more than the other, it's probably the rims on that side, and not the tires. You should take it to a garage, and have someone look at the rims, if they are okay, then you should buy a new set of used tires, and they will probably last longer.