Nearly all treadmills will run into belt alignment and insufficient lubrication issues. This will effect the quality of your workout, so be sure to periodically inspect your machine for malfunctions.
Make your treadmill run smoother by regularly lubricating it – simply apply a good quality treadmill lubricant on the underside of the belt.
You can just lift it up and rub the oil on the center and sides of the belt’s underbelly – this alone should solve many of your problems.
If you’re having trouble with belt alignment, check out the video below: