4 or 5 on tire replacement

[jackandh2o]

On our last vacation we had 2 of our BF Goodrich Commercial TA's go bad. They were about 3.5 years old. I was in Les Schwab territory and all they had was Toyo's so I bought 2. I'm ready to finish the process but I curious about the spare. Is the norm to buy 5 new and hopefully the spare never hits the ground or can I get away with putting a much cheaper tire on the spare.

Thanks Ray

2005 Montana Mountaineer 29RKB

[rdturn]

5 at a time always unless you dont mind fixing the flat and putting it right back on the trailer.

[Vulcaneer]

Most age related wear is due to sunshine and ultraviolet rays. Most spares are mounted under the coach, where the sun doesn't get to it. 't your spare doesn't see sun, it should hold up to the age issues (cracking) much better. But if replacing tires on the ground, take the newer of those tires and mount it on the spare rim. Keep it aired up. And it will work as a spare when you need it.

[TubaPete]

Since the wheel my spare is mounted on (plain steel) is not the same as the others (polished aluminum,) I treat it separately. My spare is always good enough and new enough to go on the road at any time, but it doesn't necessarily match the other four in brand or age.

[ford_truck_guy]

I also do all 5 at a time...

[ChooChooMan74]

If you're a full time traveller, I would do 5 and rotate them every 5k (Do that with the Jeep). But, for regular few weekends a year, I would put the "best" for a spare.

[BB_TX]

I never replace the spare on the trailer or on any of the cars and trucks I have ever owned when I get new tires. And the spare has only felt the ground a couple times in the last 20-25 years. And that is with driving around 50,000 miles per year between the DW and I. Spare will get me to a tire store and right back as being the spare.

Have them put the best used tire on the spare when you get new tires. And if you want, throw the other used one in the back of the truck.

[Bionic_Man]

The spare tire is to get you out of trouble, not into more. Unless you are willing to use the spare as a stop gap - just long enough to limp down the road to the next town to get the blow out replaced, I would probably replace all 5.

[Golden_HVAC]

I would keep the newest or best shape tire as a spare, until it reaches 7 years old then replace it. I would love to use Toyo's on my car, you probably want them too, they have a great reputation with the big rig truck drivers.

Normally I would say replace all at 7 years old, but if you have been replacing them over time, so no need to replace the young tires.

Fred.

[fla-gypsy]

I replace 5 at a time. Tires age regardless of use and sooner or later you will need that spare to get you somewhere