Recently we bought a new Itasca MH on an F53 chassis with GY G670 RV tires. Itasca doesn't crank out rigs in this model line with spare tires.(245 70R19.5)Having had a Class A a few years back that seemed to enjoy blowing tires or having tires that fail, I want to always have spare handy- especially since we are running up the Alaska Hiway this coming summer.I recently purchased a wheel to mount a spare on this new rig.My mind is saying to me don't spend big on this spare- just get something to get you to the next spot where you can have your G670 repaired or replaced. So I have been eyeballing a Sailun S637 which is significantly lower cost than a GY.I see a bunch out there on these Sailun G670 tires for 5vers (smaller diameters) but not much about them for MH's.Is this a practical tire for a MH spare? Any big issues with running an odd tire for a while until I can replace something in kind if I lost a GY G670 assuming same load range?Do these tires work well permanently mounted?Would appreciate some outside thinking guidance here about this.ThanksRascal

anything in a pinch. will work.

Sure it will work. I went the other way and bought a Toyo spare because that is what I will replace any failing GY with.

Since you plan on buying an exact replacement anyway, why would you buy a different tire, and then buy the replacement also. Why not just carry the replacement? You're not going to save any noticeable weight, time or effort in swapping them and you would certainly spend more money buying 2 tires instead of one. Am I missing something?

Effy wrote:I wouldn't buy a tire, spare or otherwise that wasn't rated for your MH. And it's probably not good to mix brands if you don't have to. Since you plan on buying an exact replacement anyway, why would you buy a different tire, and then buy the replacement also. Why not just carry the replacement? You're not going to save any noticeable weight, time or effort in swapping them and you would certainly spend more money buying 2 tires instead of one. Am I missing something?If the guy is lucky and takes care of his tires the spare will probably never see the ground. It would be a shame to spend big bucks just in case. I understand his thinking

It's possible I haven't been paying attention, but I'm not aware of any fivers using 19.5 inch tires?For a temporary spare, the important thing is the diameter. Measure your existing tires, and shop local truck tire shops to find a used tire that is close to the same diameter and not any wider. That will serve as your unmounted spare. Coachnet and other road service companies will be happy to mount this tire in an emergency.Unless your motorhome has a place to mount it, I would not consider a mounted spare, too heavy.

Tire stuff -Mixed Spare tire- will it work | Good Sam Community

americanrascal
Explorer
Jan 06, 2015
Effy wrote:
Since you plan on buying an exact replacement anyway, why would you buy a different tire, and then buy the replacement also. Why not just carry the replacement? You're not going to save any noticeable weight, time or effort in swapping them and you would certainly spend more money buying 2 tires instead of one. Am I missing something?

Haven't totally convinced myself to go with Goodyears down the road- they sure are pricey. The Goodyears are brand new now and I only want a spare at the moment. I expect all the tires (new spare included ) to age out about the same time.
wa8yxm
Explorer III
Jan 06, 2015
You can use a low-rent spare so long as it's the same size.. Just remember SPARE, Low Rent, Get ye to a tire dealer for a proper replacement only use.

In fact,, Many cars were shipped with "Donut" spares,, sure fit that description.
JimM68
Explorer
Jan 06, 2015
It's possible I haven't been paying attention, but I'm not aware of any fivers using 19.5 inch tires?

For a temporary spare, the important thing is the diameter. Measure your existing tires, and shop local truck tire shops to find a used tire that is close to the same diameter and not any wider. That will serve as your unmounted spare. Coachnet and other road service companies will be happy to mount this tire in an emergency.

Unless your motorhome has a place to mount it, I would not consider a mounted spare, too heavy.
darsben
Explorer II
Jan 06, 2015
Effy wrote:
I wouldn't buy a tire, spare or otherwise that wasn't rated for your MH. And it's probably not good to mix brands if you don't have to. Since you plan on buying an exact replacement anyway, why would you buy a different tire, and then buy the replacement also. Why not just carry the replacement? You're not going to save any noticeable weight, time or effort in swapping them and you would certainly spend more money buying 2 tires instead of one. Am I missing something?

If the guy is lucky and takes care of his tires the spare will probably never see the ground. It would be a shame to spend big bucks just in case. I understand his thinking
Effy
Explorer II
Jan 06, 2015
Since you plan on buying an exact replacement anyway, why would you buy a different tire, and then buy the replacement also. Why not just carry the replacement? You're not going to save any noticeable weight, time or effort in swapping them and you would certainly spend more money buying 2 tires instead of one. Am I missing something?
Ductape
Explorer
Jan 06, 2015
Sure it will work. I went the other way and bought a Toyo spare because that is what I will replace any failing GY with.
midnightsadie
Explorer II
Jan 06, 2015
anything in a pinch. will work.

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Tire stuff -Mixed Spare tire- will it work

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