- The tread on all four of your tires will be low when they are almost out of life. You can check the tread by inserting an upside-down penny into the treads. If you see all of Lincoln's head then it's time to start shopping.
- Watch out for any blistering, bulges or cracks on the side of your tires. This will indicate the material is wearing down.
- Vibrations or pulses under your seat will indicate that there is a problem with your tires.