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As I understand it that, if you get a "flat" (puncture) and need to replace it with a temporary spare, the temporary should not be used on the "driven wheels". This means that, if the "flat" is on the front it needs to be replaced with a wheel from the back. The temporary wheels is then fitted to the back. I've seen a Mazda video on fitting the temporary wheel and of course they only show changing the "back wheel".

Presume if you drive an AWD it still applies.

Is there any truth in the above?
 

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As I understand it that, if you get a "flat" (puncture) and need to replace it with a temporary spare, the temporary should not be used on the "driven wheels". This means that, if the "flat" is on the front it needs to be replaced with a wheel from the back. The temporary wheels is then fitted to the back. I've seen a Mazda video on fitting the temporary wheel and of course they only show changing the "back wheel".

Presume if you drive an AWD it still applies.

Is there any truth in the above?
That is exactly what I read and what I was also told by the dealer. A bit of a pain if you get a flat on the front!!
 

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That is a usual rule of thumb. For AWD, specifically our AWD system the rear wheels do not engage as much as say a subaru system. All of our AWD system (cx3, cx5, cx9) are FWD bias unless needed during losing grip or hard acceleration. So putting the spare on a rear tire is not going to be bad but do keep in mind that you should repair that tire ASAP to prevent any problems with the rear diff.
 

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Heres one for you Snoogie. Mazda do sell a spacesaver kit for both CX-3 and CX-5. The book says they should only be used for a "very short time". How on earth do we quantify that? I take it to mean if you ruin the diff at 20, 200 or 2000 miles, you should have changed it sooner and we don’t underwrite the warranty?
 

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In the Subaru, you can convert the car to FWD by merely pulling a fuse which makes the car safer to drive with the spare on one of the rear wheels. There is no other way in Subie-land. I don't think there is a way to convert a Mazda AWD system to FWD for the same purpose, but I may be wrong.
 

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Can you fit a full-sized spare in the trunk of the CX-3? I always just buy a fifth wheel and put it in the trunk, and store the donut/temporary spare at home.
 

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Can you fit a full-sized spare in the trunk of the CX-3? I always just buy a fifth wheel and put it in the trunk, and store the donut/temporary spare at home.
Right I'd like to see the results if someone does this. My concerns are that you would not have the fitted surrounding foam piece that holds some emergency tools. And I also have a concern whether the Bose subwoofer (if you have one) may no longer fit.
 

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I did it. You have to buy the styrene inserts.

"Just for info, after extending the clamp bolt by about 50mm, I was able to fit a full size spare which I’m much happier about;



.....when you look how much smaller the spacesaver is;



........and this is the mod to the clamp bolt;

OK, you an see what I've done here. I've found a piece of square section aluminium bar and drilled and tapped it out to 8mm then cut the head off an 8mm bolt and used a pair of lock nuts to make up the extension. I had to knock the edges off the ally extension to allow it to pass through the sub so it isn't gorgeous but it works.



You can see here that by extending it to 195mm or thereabouts it will be fine. It gives about 10-15mm of starting thread.



This was the original spacesaver kit..........



and by the way, you have to do away with that lower mat and the upper hard deck still fits perfectly.
 
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Anchorman,

Just to be clear, is that the styrene insert for the space saver or is there a different one for the full sized spare? As in if I already have the space saver with the insert would I need to buy a different one, or just extend my bolt and pop in a full size wheel/tire?
 

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I don't see the need to deal with replacing the factory supplied spare tire unless you live or frequently drive out in the middle of nowhere and the nearest tire shop is hundreds of miles away.

For 99.9% of us a tire shop is within a reasonable distance so you're not having to drive far on the temporary spare tire.
 

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Anchorman,

Just to be clear, is that the styrene insert for the space saver or is there a different one for the full sized spare? As in if I already have the space saver with the insert would I need to buy a different one, or just extend my bolt and pop in a full size wheel/tire?
Exactly. The full size wheel fits in the spacesaver inserts. That is an 18" wheel into photo and it is a snug fit. The 16" wheels go in with a small gap.

DJ. The problem comes when you can't choose taking it to a tire shop like if it's the middle of the night or your out in the sticks which I do every day. I drive passenger trains and if I get a puncture I can't be messing about swapping fronts to rears on the way to work. My other problem is my route. About a third narrow hilly roads where I would probably get killed, a third motorway where I would probably get killed, and a third making my way into Manchester city centre where I would probably get mugged, raped then killed and while I could put up with all but the raped bit, I'm not parting with my Mazda. It has to be a swift operation to limit the risk.
 
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Heres one for you Snoogie. Mazda do sell a spacesaver kit for both CX-3 and CX-5. The book says they should only be used for a "very short time". How on earth do we quantify that? I take it to mean if you ruin the diff at 20, 200 or 2000 miles, you should have changed it sooner and we don’t underwrite the warranty?
That is a good question and one that even stumps the master techs I work with (35+ years) and even they are not clear on what is considered "very short time"; 1 hour, 7 days, etc. To my knowledge of a case like this occurring was when someone runs a spare that causes damage to an AWD component, most of the time they are warrantied by some manufacture defect code and such and have either the transfer case, drive shaft, or rear diff and its components replaced under warranty despite the reason (take a hit for a happy customer I guess). Now I dont know the conditions these were determined as it was before I worked in industry. Currently in my 2 years at a dealership, customers have been pretty good on either patching their tire or getting it outright replaced.

So yeah no one knows what is defined as "short time". The only thing we can scrutinize is weather or not the tread on the spare has gone recently bald, poorly maintained, or clearly been driven exceeding the 50mph limit on them (dont ask me how they prove that, some behind close curtain nonsense) as they are stamped at lease here in the US as a warning on the tire not to exceed 50mph.
 
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