My uncle has own royal enfield thunderbird bike and let me tell you one thing it is a best bike to ride . I have riden it so many times.
It is good and well comfortable bike while you ride it . this bike is little bit heavyer as cimpare to othe bike in market. I really love its firing sound. Secondly it us heavy and with power its fuel consumption is more. Its mileage is about 35 to 40 or up to 45 depends on user to user but its great in look and in comfort I love this bike.