If your rear tire is not deflecting (squashing) as you ride, it's overinflated.

You will get used to the mushy ride feeling if you give it a chance. Then you'll appreciate the ride quality. I've experienced this and you have to resist the urge to pump all tires to the max because you'll be missing out on tire life, traction and most importantly ride quality. You might sense something 'wrong' when you have a forgiving ride, but over time every part of your body in contact with the bike will enjoy it, plus your wrists, back and neck as well.

More pressure required:
- rear tire
- heavier rider
- narrower tire
- optimized for dry smooth road

Less pressure required:
- front tire
- lighter rider
- wider tire
- optimized for off-road