Tpms

Wait. New improved display is on the way this year. Color and better indication of lost signal.

Comment on Dave & Mary's post.
Even though TST says rubber or metal valve stems, I would definitely go with metal valve stems. Just do it!
I have 8 sensors. My fifth wheel is 35' long. I have never had a problem with signal. The repeater may be good insurance, though.
Cheers,

We've been using our TST 507 10 sensor setup for several years now on two different coaches, with zero problems. It gets credit for likely saving us much more than its cost over the course of several incidents, including a sticking toad brake caliper, a failing rear wheel bearing, and a couple of nails or screws in tires. TST's customer service is excellent. We do have a repeater that I added when some new electronics were causing some signal loss from the toad.

I have mixed feelings regarding the TST 507. On the one hand it has succeeded in warning me about tires losing air. On the other hand it has caused the tires to lose air. Confused? Here's my story. I put the sensors on my Chinese made tires 2 years ago. Then I switched to a better grade of tires (Maxxis) and Discount tire put in the rubber valve stems and put the sensors back on. Last year we were coming home when the TPMS alarm sounded. Changed the tire and took it to a tire shop where they discovered a leaky valve stem. This year it happened again not once but twice. Same problem - leaky valve stem.
I discovered that the weight of the sensor and the spin of the tires was causing the rubber valve stems to fail. Their website says to use metal stems because rubber stems cause problems. I had a Dickens of a time finding a tire store that carried the kind of metal valve stems I needed.
The moral of the story is that while the TPMS protected my tires from further damage they were indirectly the cause of the problem.
The other problem is the short range of the system. I often experience a loss of signal from one of the sensors due to a weak signal or some kind of interference. They do make a repeater for this problem but I elected to pass on it since the signals eventually returns.
Overall I'd say go for it but make sure you have metal valve stems and be prepared to pay extra for the repeater.

I have had the 507 since 2011. It has saved me once. If it failed now, I would buy the same again.

Very happy with my 507 system. Customer service seems to be back to it's outstanding level. Had a return phone call at 8 P.M. to answer a question for me. Mike says he's available most nights until midnight. That's service!

Have had the TST 507 for 5 yrs or so. Have never even had a low tire. But the peace of mind of being able to see the pressures while driving is worth every penny.

I have the TST 507. It has saved me 4 or 5 times in 7 years.
I won't drive without it.
Yes, there are other systems out there, but I am very happy to recomend TST 507.
Cheers,