In a car, it's hard to lean over the steering wheel at a light and pinch a tire or look down at it to check the pressure - you know, if it FEELS low. So sure, I like TPMS in the cars. But for $&@# sake, if you can't feel a tire going low on a road bike... come on.
Instead of adding more electronic crap to your bike, try this:
- After you air up your tires to your preferred pressure, feel the tire - like, actually use your fingers and pinch/press the tire to get used to what that ideal pressure feels like.
- Then, as your beginning your ride, look down at your tires - see how much they're bulging
- Now for the advanced stuff ;-) - if you're able, while riding, lift a tire off the ground an inch and feel how it returns. Seriously. Not a bunnyhop - just independently lifting each tire and feeling how it "hits".
The more you pay attention to how those tires feel when you know they're at the right pressure, the easier it will be notice when they're not.