The TST 507 is the RV TPMS with the best brand support. Replaceable CR2032 batteries (no full-sensor replacement when batteries die), USA-based customer service, and a 3-year warranty are the differentiators against the cheaper Tymate options and the spec-sheet-leading EEZTire 518C. Expansion path goes to towing trucks plus 4 towables — useful for users who tow trailers frequently. The flow-through variant is the upgrade for users with metal valve stems.
Strengths
- +USA-based live customer support — best in this lineup
- +3-year warranty — longest among picks here
- +User-replaceable CR2032 sensor batteries — no need to replace whole sensors
- +Expandable to monitor a towing truck plus up to 4 towables
- +Strong wireless signal with optional flow-through sensor variant
Watch-outs
- −Pricier than the Tymate TM7 by nearly 4x for 4 sensors
- −RV/trailer-focused — overkill for daily drivers
- −Cap-sensor design loses some PSI accuracy vs flow-through variant
- −Display is monochrome by default — color is an upgrade
How it compares
Best support and warranty among picks here. Loses on tire count to the EEZTire 518C (4 vs 26) but matches on RV-tier robustness. More expensive than the Tymate TM7 and Tymate M7-3 by 3-4x but offers professional-tier brand support. Same Tymate TM12-class tire-count capacity at a similar price.
Who this is for
At a glance: RV owners who prioritize US-based support and a longer warranty over raw tire-count capacity.
Why you’d buy the TST 507 (4 Cap Sensors)
- USA-based live customer support — best in this lineup.
- 3-year warranty — longest among picks here.
- User-replaceable CR2032 sensor batteries — no need to replace whole sensors.
Why you’d skip it
- Pricier than the Tymate TM7 by nearly 4x for 4 sensors.
- RV/trailer-focused — overkill for daily drivers.
- Cap-sensor design loses some PSI accuracy vs flow-through variant.
Rating sources
Our 4.5 score is the average of these published ratings. More about methodology.