bl52krz Posted July 21, 2023 Share Posted July 21, 2023 Hello everyone, I'm new to Mazda and don't have a spare. I just acquired a 2018 Mazda CX-5 Sport and am in the process of organising the spare. I've been assured that even though I have 19" wheels, a 17" spare would enough. I'm hoping so since I have one on the way. (This is not from Mazda). Because it is not advisable to place the spare on the fronts, I went with full size. Can somebody assist me with the foam surround? Where can I find the proper one or components, and has anybody converted or is it possible to convert the puncture repair one? Will the bolt that holds the bose in place be long enough? In addition, I have a buddy who has purchased a Mazda 2 Sport 2018 and plans to do the same. Is the boot deep enough to accommodate a full-size spare tyre, and can that foam surround be obtained? Thank you very much. Quote Link to comment Share on other sites More sharing options...
trikey Posted July 21, 2023 Share Posted July 21, 2023 Greetings - There are a few posts on similar issues in the Wheels & Tyres area, so check there. Quote Link to comment Share on other sites More sharing options...
KWILB Posted July 21, 2023 Share Posted July 21, 2023 I purchased the correct styrene inserts from Mazda, however I had a space saver. You are aware that a full-size spare will not fit on the floor, correct? The floor will need to be packed with cavity wall insulation. Quote Link to comment Share on other sites More sharing options...
paulh2602601 Posted July 21, 2023 Share Posted July 21, 2023 Despite it being a 2016 model, I got the Foam Inserts from Mazda and a 17" space saver online. The cost of the foam wasn't excessive. Mazda suggested that I replace my floor mat, however the tyre and wheel still fit well. Thus, just the foam was required. Quote Link to comment Share on other sites More sharing options...
Ken_Lion Posted July 21, 2023 Share Posted July 21, 2023 I purchased a 17-inch Spacesaver spare tyre for my 2016 Mazda CX-5. Despite the fact that my vehicle had 19-inch tyres on it, the salesman assured me that this was OK. The issue was that the boot floor board had to have a polystyrene kit installed in order for the floor to be raised to fit it. This did not meet my expectations, therefore I made sure to always have a spare tyre in the trunk of my vehicle. My new vehicle is a Mazda CX5 2019 Sports Nav+184 Auto AWD, and I just got it today. I decided to keep the 17-inch wheel for the next model, which will come equipped with a Bose subwoofer in the trunk. According to the handbook, I should be able to unscrew the subwuffer fixing bolt, position the wheel in that location, then replace the subwuffer and tighten the bolt through it to secure both components. As I have not had the opportunity to give it a thorough examination, I would be grateful to hear the opinions of anybody who has attempted this. Quote Link to comment Share on other sites More sharing options...
another_clean_sheet Posted July 21, 2023 Share Posted July 21, 2023 Just now, Ken_Lion said: I purchased a 17-inch Spacesaver spare tyre for my 2016 Mazda CX-5. Despite the fact that my vehicle had 19-inch tyres on it, the salesman assured me that this was OK. The issue was that the boot floor board had to have a polystyrene kit installed in order for the floor to be raised to fit it. This did not meet my expectations, therefore I made sure to always have a spare tyre in the trunk of my vehicle. My new vehicle is a Mazda CX5 2019 Sports Nav+184 Auto AWD, and I just got it today. I decided to keep the 17-inch wheel for the next model, which will come equipped with a Bose subwoofer in the trunk. According to the handbook, I should be able to unscrew the subwuffer fixing bolt, position the wheel in that location, then replace the subwuffer and tighten the bolt through it to secure both components. As I have not had the opportunity to give it a thorough examination, I would be grateful to hear the opinions of anybody who has attempted this. We had a 2015 CX-5 upgraded to 2017/18. Bought the full kit for the first and was a bit disappointed to discover that we would need new polystyrene side pieces as the boot floor was a different shape for the later model. Negotiated with the dealer for new side pieces and bought a longer bolt to go through the sub. Fits no problem although the electric lead must be disconnected and reconnected. As the top of the spare is about one inch lower than the underside of the lifting floor, we have fitted small two pieces of wood on the wheel to take the weight of any heavy loads. Quote Link to comment Share on other sites More sharing options...
KWILB Posted July 21, 2023 Share Posted July 21, 2023 Yes, I have also done that. I created a little bolt extender and the styrene inserts weren't pricey. I just learned that the original Mazda wheel can only be used on the back since it won't fit over the front calliper. I traded it in for a set of Manchester Wheels 19-inch spacesavers, and they fit. Do you think it's even worthwhile? Most of the time, the gunk would be effective, and you would win the whole area underneath. I've just had this GT since last Wednesday (I traded in a 2018), but it appears like the wheel well is shallower. Quote Link to comment Share on other sites More sharing options...
norbury.brook Posted July 21, 2023 Share Posted July 21, 2023 According to the laws, you are only permitted to employ a spacesaver on the wheels of the vehicle's rear axle. Two main causes. a) Since the front axles are the driving axles, more force is transmitted through the smaller profile tyre than it was designed to handle. This might cause the tyre to wear out prematurely. On the back end, they are barely lagging behind. b) It should come as no surprise that the steering is done using the front axle. Therefore, for the same reasons as stated before. More twisting force than the tyre was intended to handle. For the same reasons, there should also be a third limitation placed on the vehicle, which is that the maximum speed should be capped at 80 kilometres per hour (50 miles per hour). They are only intended for use in an emergency to get you home or to the closest tyre provider as quickly as possible. But try explaining it to some of the individuals you meet every day who are still operating on a screensaver. They won't believe you. Quote Link to comment Share on other sites More sharing options...
Black_raven Posted July 21, 2023 Share Posted July 21, 2023 2 minutes ago, KWILB said: Yes, I have also done that. I created a little bolt extender and the styrene inserts weren't pricey. I just learned that the original Mazda wheel can only be used on the back since it won't fit over the front calliper. I traded it in for a set of Manchester Wheels 19-inch spacesavers, and they fit. Do you think it's even worthwhile? Most of the time, the gunk would be effective, and you would win the whole area underneath. I've just had this GT since last Wednesday (I traded in a 2018), but it appears like the wheel well is shallower. Could this be to accommodate the Adblue tank? Quote Link to comment Share on other sites More sharing options...
KWILB Posted July 21, 2023 Share Posted July 21, 2023 1 minute ago, Black_raven said: Could this be to accommodate the Adblue tank? That's what I'd say It would have fit comfortably in the 17, but not in this 19. Quote Link to comment Share on other sites More sharing options...
torque2me Posted July 21, 2023 Share Posted July 21, 2023 How are you all? I'm new to both Mazda and not having an extra tyre, just like the OP. I just got a CX-5, but it doesn't have an extra tyre. The car it's replacing will be taken to the junkyard, and that one has a 16" spacesaver spare in the trunk that looks brand new. I'm thinking about keeping the 16" space saver from my old car and putting it in the back of the CX-5 as a spare. The CX-5 has 19" wheels and is the SportNav version. Since CX-5s with 19-inch wheels can get a 17-inch space saver, would a 16-inch space saver get you home in an emergency, or is that going too far? Best wishes Quote Link to comment Share on other sites More sharing options...
stevenkeyte Posted July 21, 2023 Share Posted July 21, 2023 Huh, I'm not sure. Since it came from a different car, first, I'm wondering whether the fixing centres and bolts are compatible. If so, is there a noticeable change in the diameter of the tyres itself (the Mazda 17 and 19 inch wheels use different tyres, but their total diameter is the same)? To detect a drop in tyre pressure, a 2014 vehicle's tyre pressure monitoring system compares the rotational speeds of each wheel. It's likely to go off often if the outside diameters don't match. Quote Link to comment Share on other sites More sharing options...
torque2me Posted July 21, 2023 Share Posted July 21, 2023 Thank you, BigAl. Good observation regarding the diameters; I'll try to measure them later this week. Both wheels have five bolt holes, so I'll check whether they line up. My understanding was that wheels and their attachments were pretty standardised and that wheels were simply purchased from vendors by automobile makers, but that was just an assumption on my behalf. Quote Link to comment Share on other sites More sharing options...
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