probably an alignment problem or tie rod
depends on if its even or not. If its even wear around the tire, its probably just underinflation, if it has a hill and valley pattern its probably a mechanical issue.
if it is worn down the middle it means the tire has to much air in it. if the two sides of the tire worn there is to little air. if it is worn at one side of the tire the tracking is out
The allignment goes awry; causing the tire to rub more so on one side than the other.
So it will run true and not wear out one side or edge.
Any wear that is more obvious in one area or on one side is improper.
Tire wear is certainly one of the ways to tell, but there are other indicators as well. If the vehicle pulls to one side you no doubt have an alignment problem.
To easily remove and replace a tire on a bicycle using a bike tire lever, the best technique is to first deflate the tire completely. Then, insert the tire lever between the tire bead and the rim, and gently pry the bead over the edge of the rim. Work your way around the tire, using multiple tire levers if needed. Once one side of the tire is off, remove the inner tube and then repeat the process for the other side. To replace the tire, start by fitting one side of the tire onto the rim, then insert the inner tube and tuck it inside the tire. Finally, use the tire lever to carefully pry the other side of the tire back onto the rim. Inflate the tire slowly and evenly to ensure it is seated properly.
To effectively get a bike tire on a rim, start by deflating the tire completely. Place one side of the tire onto the rim, then use tire levers to carefully work the other side of the tire onto the rim. Make sure the tire is evenly seated on the rim before inflating it to the recommended pressure.
on any car you can replace just one tire. however it is recommended to replace all four due to different wear patterns. replacing just one tire can cause your vehicle to drift off to one side and can cause excessive wear to your tires.
uneven wear could be one of a couple of things. The tire pressure could be too high or too low. The rear alignment could be off. Or if the tires were rotated and the front end was out of alignment, then the wear will continue even though the tire is now on the rear.
To wear....
To remove a bike tire, first release the brakes if necessary. Then, use a tire lever to pry the tire off the rim. Once one side of the tire is off, pull out the inner tube. Finally, remove the other side of the tire from the rim.
rapid or uneven tire wear, poor handling, "pulling" to one side or another, drifting...