I finally got around to replacing my transmission mount last weekend. I was getting a ton of exhaust noise, vibrations, and transmission gear sounds from under the shifter.

What a difference! Not only is the car incredibly quiet now, but it handles, corners, and rides much better. This is something I hadn't really thought about, but makes complete sense: the old mount was so far gone that the transmission was directly contacting the crossmember, and must have been slopping from side to side and bouncing up and down quite a bit with the car. The ride was so rough, I was sure I needed new shocks and struts - but not anymore!

The rubber of the new mount was so thick by comparison that I had to get another jack under the crossmember while re-installing just so I could start the bolts in their holes. There seems to be an awful lot of compression going through that little rubber piece, and judging by these vast improvements I've experienced I would definitely classify this as a routine maintenance item. And the part being just $20 is also a bonus!