I like these systems:
Mobiletron - PTO_VPC02A-LA4
- This is the system I would recommend to anyone who asks, appears to have the highest quality.
- Only one USA distributor, however.
Regitar in Alabama.
- Display is IP66; downside is the display is kinda big and bulky.
- Sensors have a 7 year rated battery life.
- Good user reviews
Kisan - TPM-30
- Out of production for redesign until late 2015 per Phat Performance
- Good user reviews
Orange Electronics - TPchecker M202
- Out of production
- User reviews are hit or miss.
Here are the summary deal breakers for each of these systems:
Doran - 360M
- Sensors only transmit every 6 minutes.
- Pressure only; no temperature monitoring.
- Display reads the words "on" instead of pressure; you have to press a button to see pressure.
Hawkshead - Moto Track 2
- Sensors only transmit every 5 minutes.
HCI Tire Safeguard - TPM-B20MD
- Cannot view the display at night unless you press a button.
Murph's Kit (made by LDL Technology) - Tire Watch
- Temp displayed in C only.
- Sensors are motion activated and only transmit when at ~12 mph.
Show Chrome - TireGard 13-315
- Display is a battery powered pocket fob and not waterproof.
- Has low user reviews for reliability.
Show Chrome - TireGard 13-318
- Display is a battery powered handlebar mount and not waterproof.
Tyredog - TD-4100A-X
- Display is battery powered.
- Sensor battery life is rated at only 6 months.
Vulcan - PressurePro
- Only displays one tire pressure at a time, cycling through each tire one at a time.
Zadi - RTS
- Display is battery powered.
- Sensors are motion activated and may not show pressure when parked.