Generally tires need to be replaced when their tread is one-sixteenth inches deep, or before that if necessary due to damage. Some tires have white bands that, when they become visible, let you know that it's time to change the tire. Even a tiny bit of yellowing or caking on the rims means that the time is coming up for them to be replaced. A cracked or seriously damaged rim needs to be changed for safety reasons.
NO, they can not.
Yes.. Rims are rims.
To replace all the tires on a car with 27-inch rims, you would need four tires.
Rims and tires should be changed yearly to keep them in best performance and avoid safety issues. Your local garage will probably do this for you cheaply.
Yes, you can replace the rims and tires at different times, on both cars and motorcycles. However with cars it is usually recommended to replace them both at the same time, since it is much easier and the rims get wear as well.
I have a 2002 Nissan altima with tires 205/65R16 can I replace them with 215/65R15, the tires came on 5 bolt rims and will fit on the altima. If the tires are on 15 inch rims, you are ok. You can not put 15 inch tires on 16 inch rims, or 16 inch tires on 15 inch rims.
You can find cheap tires and rims at Les Shwab tire. Be warned though, cheap rims will often break if you come in contact with a curb and cheap tires often do not last long or have the grip that more expensive tires do.
You'll most likely be buying rims with a larger diameter such as 19 or 20 inches. Your existing tires will need to be replaced with a tire that will fit on your rim.
Only if you get rims to match the 15 inch tires that will fit on your vehicle.You cannot mount 15 inch tires on 14 inch rims.
If you want to replace the current tires on your vehicle with a 17 inch tire you will have to have the proper rims for that tire. If you currently have rims for a 17 inch tire then you would not have to replace them but if your tire rims are smaller or larger then they would have to be replaced.
No the rims do not need to be replaced along with the new tires unless certain conditions require you to do so. The only time you need to replace the rims along with the tires are when you damage or lose them.
That depends on if the 15 inch rims will fit over the brake calipers.