I have had this chair for over a year. It is torquey as heck but that means power. I disabled one of the safety settings so i can have a little tilt and still ride at full speed, yes it is a bit dangerous but I am aware and careful. This chair is very durable and have had not one issue with it, not one !! It also has the ability to change the center of gravity so it is not so nose heavy into the turns and eats up battery juice so fast,also makes the ride softer. I took it apart and put electric grease in all the plugs, because try as we all might, water or moisture still gets in these to corrode the connections. No wiring or connection or electrical issues. Just make sure you get MK gel batteries in it...no other brand will work as long or as well. I do hope this helps some one out there. I do have a wish for the manufacturer...please allow the tapered legs to be available on the center of gravity tilt chair,currently cant get it that way. This chair is just flat out awesome. I find it a bit depressing to drone on at 4 mph and to almost get run over at traffic lights, in other chairs. It is a bit of fun to go off zipping around to places. It is like my little go cart when i want it to be ! It is also mild mannered on speed setting two or three for around the house. This chair is just fantastic. Looking to order two more in the future ( one for my 26 year old daughter and a back up for me were i ever to need it ) One final thought, parts are also available at a reasonable price. look up the price to replace a part on the chair you might be considering...say an armrest pad...just do it before purchasing. You may find as I did that some are not available at all or are $300.00 for an armrest pad. The part for this chair is $7.00, and available to be shipped to your home. Just think about that. Wishing every one a happy life and to have some fun and get some sun !! Dr. Eric M. Jewell