I purchased a fat tire bike about a year ago after one week the wires burnt I called into return the bike the gentleman said we can replace that part no problem really sold me on the bike and said that it was a great bike and it must've just been a defective part. I agreed he sent the part out we replaced it on the bike and the bike worked for three or four months then the same thing happened again. We purchased the extended warranty they told us to go to a bike shop and have it checked out. We were told that the wires burnt out again and the motor also burnt out this time. BPM advised us to send the motor back and they would replace it and the other wire parts as well. We sent it back and it has been for five months we are unable to get a hold of them I called and got a hold of them one time when I leave messages they do not return them. The one time I got a hold of them they said a shipment was coming in the beginning of April and I should call back then I have tried to call and left several messages since 1 April and my calls are ignored. At this point I am unsure what to do but I paid a lot for that bike and in the past year I have only been able to use it for three or four months.