Using a trailer tire for a spare tire?

[Kern Dog]

I'm beginning to think some of the responders didn't get the same sense of Kerns post that I did. He needs new trailer tires, for his trailer, and was wondering if he could use one, temporarily, as a spare for his car, for a trip.
Correct answer? Sure,why not?.
If the bolt pattern is right, the height is right to protect the sure grip for a few miles, and you have the tools, jack and lugs.....

Yeah....this is exactly what I meant.
The chance of needing the spare is slight but if I do, I want one that won't shred the clutches in the differential.
I went to America's Tire and bought 2 "Trailer Use Only" 225-75R15s after work. $118 each plus tax. I'm going to mount them myself.
These are 10 ply tires and feel pretty heavy compared to regular car tires.

 

[WileERobby]

If you dare, use it as a spare. Who cares ? It's not gonna wear. Getting a flat would be rare. Just make sure it has enough air.

 

[Kern Dog]

If you dare, use it as a spare. Who cares ? It's not gonna wear. Getting a flat would be rare. Just make sure it has enough air.

I should stow it where? Over there? It has tread so it has no wear. If someone else gets a flat, I'd be inclined to share.

 

[WileERobby]

I should stow it where? Over there? It has tread so it has no wear. If someone else gets a flat, I'd be inclined to share.

That's fair.

 

[Dennis H]

Got the scissors and cross bar?

 

[BeepBeepRR]

If you got a flat that would be a bear. Put it on if you dare. See how much I care? It would look funny and I would have to stare.

 

[WileERobby]

If you got a flat that would be a bear. Put it on if you dare. See how much I care? It would look funny and I would have to stare.

Your post doesn't compare. You repeat what's already there. Then I have to pull my hair, to figure out your nightmare. This has gotten ridiculous, I swear.

 

[Kern Dog]

Got the scissors and cross bar?

I have a canvas type bag with a small floor jack, sockets, ratchet and misc small tools.

 

[ckessel]

I must read content fully before doing a reply sometimes.

 

[patrick66]

A good trailer tire will work fine as an emergency spare. Trailer tires (ST-rated) are indeed stiffer in the sidewall area, and their construction makes them ST-rated. Trailer tires do last longer than P-rated tires.

In the 16 years I owned my trailer, I had only put one set of new bias-plies in it, after the originals were ready for replacement. I had put somewhere between 130K-150K on that trailer, total. The tires that were on it were only three years old, and looked brand-new.

I digressed a bit, but you get the point.

 

[Timothy]

I'm going on a trip next week. I've never had a flat with this car at home or on the road but I want to be ready.
The rear has a clutch type limited slip differential and I want to stow a spare that is the same height as my rear tires.
It so happens, a 225-75-15 is just about right.
There are a LOT of trailer tires in this size.
Also, a pickup bed trailer that I have needs new tires so I was considering the idea of simply using one of them as a spare tire for the trip.
I've read that trailer tires have a much stiffer sidewall and are not designed to handle lateral loads like a car or light truck does but.....who drives aggressively on the spare?

View attachment 1271381

My two cents. I would consider going to a tire dealer and asking them if they had a decent used tired in your needed size or at least close to it and put it on your rim. As mentioned in the posts it doesn't have to be new. A spare has to hold air and be able to get you home or to a repair place safely.

 

[64plymouth]

Walmart sells 14” & 15” car tires in a lot of sizes. The cost can’t be much more than a trailer tire so I’d go that route.

Safe travels.

Those are what I run on my car trailer

 

[haywire 440]

Those are what I run on my car trailer

My understanding is because of the lateral play in automotive tires that’s not good. Trailer tires have a stiffer sidewall. Maybe others will chime in and I’m no certified tire specialist.
Just my opinion.
Happy & safe cruising always my friend, haywire 440

 

[64plymouth]

My understanding is because of the lateral play in automotive tires that’s not good. Trailer tires have a stiffer sidewall. Maybe others will chime in and I’m no certified tire specialist.
Just my opinion.
Happy & safe cruising always my friend, haywire 440

I think it depends on the weight on the load. On my 28ft enclosed I use 10ply trailer tires because it is heavy. My 16 ft open trailer rarely see anything close 5,000 lbs gross weight.