What size weights should I purchase? Follow Weights will vary by instructor and class type; therefore, this is a matter of preference as we put your safety and comfort first. For your convenience, we offer 5lb. to 30lb. weights. -7 Related articles Do I need to pay for 2 subscriptions if I own a Peloton bike? Recommended headphones to use with the Peloton Tread Tread Century Club Peloton Tread Classes How much horsepower does the Tread have?