nah while im driving too. its weird cause sometimes it will vibrate and sometimes it wont. and it only 3rd and 4rth gear on like 3,4,and at times 5k rpm's. my speedometer dont work(of course) so i dont really kno wats the miles. idk if i dont figure it out soon ima sell it. i really think its my tranny cause the driveshaft is good the ujoints are good rear end is good tires are good, im destroying my brain trying to figure it out.