I have two Life Fitness 95ti commercial cardio treadmills for sale. Both are in excellent condition and have always been taken care of with proper maintenance. Belts and motor are in great condition as well. if purchased for residential use, they will last a lifetime as they are designed for 12-16 hours per day of use. Commercial treadmills are much higher rated for impact and protecting joints and knees compared to residential treads. Both are currently in use and can be tested and tried before purchased.