My wife has a 02 4runner 2WD. A few months ago she noticed a vibration and took it to the shop. The shop told her the drive shaft was bad. We did not replace the drive shaft, but I did replace both front and rear universal joints. The universal joints helped out tremendously, but did not totally cure the problem. My question, the shop told my wife that the rubber between the outer and inner part of the drive shart was "bad", causing the vibration. Never heard of a drive shaft just going bad. I have heard of them getting bent or wieghts falling off. Anyway, is this normal for a Toyota driveshaft? The tires have been checked, thats not the issue. Hope someone can help me. If it is the drive shaft and its out of balance, can I have it balanced? Thanks in advance!!