How to Know When Car Tires Need Replacing
- Look for the wear indicators in the major grooves. Replace the tire immediately when the tread wear indicator shows.
- Check for minimum tread depth using the tread depth measure.
- Perform a visual inspection of the tread and sidewall. If there is any exposed steel or fabric and if any material is visible, have the tire(s) replaced immediately.
How to Replace a Tire
Rims of different diameters and tapers cannot be interchanged. The top right diagrams illustrate the difference between rims of two different tapers and diameters.
- Pry off the wheel cover
- Loosen the lug nuts.
- Jack up the vehicle about 6 inches off the ground
- Remove a tire and wheel from a vehicle
- After separating the tire and wheel, replace with a new tire
- Check tire balance
- Lower the car to the ground fully and remove the jack
- Finish tightening the nuts and replace the hubcap
- Install the newly fitted tire and wheel on a vehicle