I run Crossfire’s on everything with duals. Good indicator for over under inflation.
One connection to fill both tires. If one tire has a sudden loss of air the system blocks that tire away so you will not drain both tires.
With good tire maintenance practices, check pressure before a trip and each morning before you start, I see very little advantage to TPMS Systems.
The cost/benefit is out of line. TPMS will not save you from a blowout, good tire management will.
The Crossfire will show if you’re over or under pressure at a glance. Proper pressure at the start of the day is the key. It’s not unusual for tire pressure to change by 5 to 7 psi under normal conditions and even more if altitude/temp changes during the day.
The toad might be the place for TPMS. Again the key is to keep an eye on your tires, all of them.
I check my tires at every stop and the Crossfire make this easy.
A lot can happen between stops. Case in point: two weeks ago we left the house for a weekend outing with our club. I checked the tire pressures at the house and everything looked good. My wife was following behind me in her car and we stopped at a Camping World about 20 miles down the freeway. A quick tour around the coach showed that everything looked good. Got back on the highway, with the wife right behind me, and drove another 5 miles to the campground. When we got there the wife said that about a mile back she saw the inner dual on the curb side wobbling. A quick inspection revealed a brand new zipper had appeared in the sidewall.
Now, it happened after we stopped, so no amount of checking would have caught it. If the wife had not been driving behind me and seen the tire wobbling, I could have driven on until the outer tire blew from overheating. A TPMS would have alerted me to the zipper failure when it happened and allowed me to take action. Bottom line: I'd rather have a TPMS monitoring my tires than a connection between the two tires that is SUPPOSED to properly isolate them - it still won't alert you to a failure on one tire.
Your right running without gauges would be foolish at best. But this is not apples to apples.
You can't see your disk brake temp?
I agree monitoring your tires is never a bad thing. But you can not leave it to the gauges....
The cause of most blow outs is hitting something in the road or a degraded tire.
Modern tires can easily handle a range of pressure without damage.
I say if someone has $600 to spend get the TMPS.
Common blowouts are indeed caused while driving - and it's those occurences that are best served by a TPMS monitor. If the tire lets go and does no damage to the coach then you won't know about it until the second tire fails from overheating - then you've got more damage to repair. In our case, the roadway was clean and smooth. I saw no debris that would have punched a hole in my sidewall, felt nothing when the tire let go, heard nothing, saw nothing out of the mirror or rear-view camera. My wife saw no debris emerge from under the rig - her only indication that something was wrong was the tire wobbling on the rim. A TPMS will alert you at once to the first tire failing, allowing you to get off the road quickly.
I just ordered a TST system, with 6 flow-through sensors for the grand total of $299 with free shipping - maybe they were $600 last decade, but the prices are much more reasonable now. Go ahead and connect your dual tires together if it makes you feel better, but it's no substitute for a monitoring system.