Can I use a 255x80 22.5 as a spare?

Alan_Hepburn wrote:

PastorCharlie wrote:
It depends which rear tire needs replacing. The front tire when moved to the rear will fit the inside rear. If it is used on the outside rear it reverses the spin direction which is not recommended.

As far as I know the major tire manufacturers have not had tire rotation restrictions on their tire for a couple of decades now - construction materials and techniques have improved considerably since radial tires were introduced in the last century.

Correct.

Direction of rotation is NOT an issue unless the tires are marked as directional (VERY few). Those few will have arrows showing direction of rotation.

Here is the quote from the Michelin site-- page 9: https://www.michelinb2b.com/wps/b2bcontent/PDF/RV_Tires_Brochure.pdf

There are no restrictions as to the
method of rotation with the MICHELIN
®
RV tires; however,
Michelin recommends including the spare tire in the
rotation pattern and changing the direction of rotation.
Tires can be rotated front to rear and side to side. If using
directional tires, ensure tires are mounted to rotate in
proper direction as it may contribute to premature wear

PastorCharlie wrote:
It depends which rear tire needs replacing. The front tire when moved to the rear will fit the inside rear. If it is used on the outside rear it reverses the spin direction which is not recommended.

As far as I know the major tire manufacturers have not had tire rotation restrictions on their tire for a couple of decades now - construction materials and techniques have improved considerably since radial tires were introduced in the last century.

Ivylog wrote:

michelb wrote:
Personally, I really wouldn't worry about it as you are probably only planning on using the smaller spare for emergency anyway and would eventually replace it with the proper size. Driving a few hundred miles with mismatched tires is not really going to have any effect.

X2 if you put it on the front at max pressure.

Good point about the pressure; the smaller tires are likely to have a lower carrying capacity so you'll need to have them more inflated to get the right capacity. Also running at max will mean you get the least amount of tire 'compression' under the load as possible which will help compensate for the fact that they are a bit smaller.

michelb wrote:
Personally, I really wouldn't worry about it as you are probably only planning on using the smaller spare for emergency anyway and would eventually replace it with the proper size. Driving a few hundred miles with mismatched tires is not really going to have any effect.

X2 if you put it on the front at max pressure.

Personally, I really wouldn't worry about it as you are probably only planning on using the smaller spare for emergency anyway and would eventually replace it with the proper size. Driving a few hundred miles with mismatched tires is not really going to have any effect.

Off topic but out of curiosity what are you replacing your Berkshire with?

The correct way to utilize the front would be to use the one from the opposite corner for an outer flat. If it is an inner flat you would use the front from the same side!

You need another 275/80 or a 295/75R22.5 for a spare. The 255 is probably NOT rated for the weight you need!

It depends which rear tire needs replacing. The front tire when moved to the rear will fit the inside rear. If it is used on the outside rear it reverses the spin direction which is not recommended. It could be taken of the rim and reversed to keep the same rotation on the outside rear.

If it is only temporary it would not matter reversing the rotation direction.

Triker,
That's what I was hoping. I initially wanted to sell the tire but now I guess I will keep it to use in an emergency.
Thanks.

It will work on the front axle.
For rear there is almost a 2" difference in diameter.

You could with a rear flat, put the spare on a front and then put the OEM front on the rear flat spot.