Tpms on spare

[DnL]

I’m just wondering what people think. Should I put a TPMS monitor on the spare tire?

I’m thinking I will never change a tire on my Forester myself. I’d never get it jacked up. If need be, I would rely on roadside assistance to do it. And, I’m thinking their truck would have an onboard compressor to air up the spare if it needed it.

What say you?

[AlBab930]

If you have one then ABSOLUTELY put one on the spare. You never know for certain that a roadside assistant will have an air tank or if the spare willl hold air if it's been flat for a period of time.
I had a flat on a car a few years ago out on the road. AAA came and changed the tire putting on the spare. The spare was FLAT! Technician had an air tank on the truck but guess what, he didn't check it before he left the shop. It was empty. He drove 30 minutes away to fill the tank, came back and filled the tire but then discovered he didn't have a tire pressure gauge!! He filled up the spare to where it "looked" ok and I drove gingerly to a station a few miles away to check the pressure and top off the tire.
I had been sitting at the side of the road for over an hour for the initial response and then had to wait another hour for the tech to get the tank filled and return to me.
Now, I should have regularly checked the air in the spare but it was not at all convenient to do that as it was buried in the trunk and pretty inaccessible unless you HAD to get it out.
I now have a TPMS on the TT spare and monitor it closely before every trip.

Travel Safe!!

[Nick Danger]

I check the pressure in all my tires (Tow vehicle, camper and all spares included) the day before I'm headed out. I'm obsessive; but, the most I've ever gone in one trip is 300 miles. The camper spare is typically the only one to take air. It's usually less than 5 pounds and it's never been on the ground.

I don't have TPMS on any camper tires.

[jrschneider99]

Not all TPMS systems will monitor a fifth or seventh wheel (dually truck). Check if your system will monitor and display the pressure of the spare before investing in a TPMS unit for the spare tire.

[ChrisParise]

Originally Posted by DnL

I’m just wondering what people think. Should I put a TPMS monitor on the spare tire?

I’m thinking I will never change a tire on my Forester myself. I’d never get it jacked up. If need be, I would rely on roadside assistance to do it. And, I’m thinking their truck would have an onboard compressor to air up the spare if it needed it.

What say you?

I've got the Tireminder i10 TPMS on 10 tires including the toad and think it would be overkill to buy another sensor to monitor the spare. If you're anxious about your spare tire, check it on a schedule. Or have your mechanic check it when your in for a LOF. An annual undercarriage inspection is another opportunity

Roadside assistance might not want to use your spare if it's old. Yes, they should have an air compressor.

[tomkatb]

I am pretty sure out pressure monitors only work if the rv is moving. So I doubt one would work on my rv. If they worked all the time the battery life would be short.

I frequently check tire pressure and have an on board compressor. Viar.

So filling a low spare would be easy if necessary.

[ChrisParise]

Originally Posted by tomkatb

I am pretty sure out pressure monitors only work if the rv is moving. So I doubt one would work on my rv. If they worked all the time the battery life would be short.

I frequently check tire pressure and have an on board compressor. Viar.

So filling a low spare would be easy if necessary.

Tireminder i10 TPMS works all the time. Batteries last almost a year. They've got an annual battery program for $5

I'd be interested in knowing which tpms require a tire to be rolling. Sort of defeats the purpose of a tpms - I want to know tire pressures before getting on the road.

I've got the Viair too and all the equipment to change a tire if needed. Waiting for Roadside assistance is not something I want to do but I have RA carrier on my rv insurance and Good Sam just in case

[tomkatb]

I think ours is an older tst tire monitor.

I know that when we start out the monitor will not function until the tires run a while. I assumed centrifugal switch.

My batteries last years. Changed every 2-3 years. Only changed once since 2019.

In the spring I test and refill all tires at the storage locker. Then we turn the monitor on while we drive. Then fill up at the arrival as necessary. We have commercial tires. They seldom need air. Fifth wheel CC RE34.

[ChrisParise]

Originally Posted by tomkatb

I think ours is an older tst tire monitor.

I know that when we start out the monitor will not function until the tires run a while. I assumed centrifugal switch.

My batteries last years. Changed every 2-3 years. Only changed once since 2019.

In the spring I test and refill all tires at the storage locker. Then we turn the monitor on while we drive. Then fill up at the arrival as necessary. We have commercial tires. They seldom need air. Fifth wheel CC RE34.

Thanks, I've read other posts saying the same thing about tpms. That's phenomenal batteries lasting that long. Batteries, o rings, are quite easy to change on my caps