Technical Space saver sizes

[Dobcrosser]

Hello! I would like to buy a space saver spare wheel for my 2019 500x which is on 18” alloys.

I can only see 17” space savers (biggest) for sale. Can I use 17” ? Wouldn’t it damage the diff?
If not where do I get an 18” space saver?

Cheers folks.

Dobcrosser

 

[bugsymike]

Hello! I would like to buy a space saver spare wheel for my 2019 500x which is on 18” alloys.

I can only see 17” space savers (biggest) for sale. Can I use 17” ? Wouldn’t it damage the diff?
If not where do I get an 18” space saver?

Cheers folks.

Dobcrosser

I believe it is the "rolling circumference" that is the critical thing.
Space saver wheels are always much skinnier than normal road wheels which is why they have a lower speed recommendation.
So even with a smaller diameter providing the profile of the tyre is larger to give the same overall circumference then all should be fine.

 

[Dobcrosser]

That makes complete sense - Thank you.

 

[s130]

On my 500X 2015 the supplied space saver is:

Space-saver wheel (where provided) Rim: 16 x 4.0Tyre: T145/90 R16 106M

 

[Dobcrosser]

Many thanks for all your help folks!

 

[nick130]

@Dobcrosser I'm looking for the same having just pulled a screw out of our tyre and having had the car out of action for 4 days while we got it sorted. We've got one of those useless cans of slime and a feeble compressor in the boot.
Let me know if/where you find one, we've also got 2019 car but with 17" wheels. Ideally I'd like to get space saver and tool kit/jack/polystyrene insert thingy. If anyone knows where to get these please let me know

 

[s130]

@Dobcrosser I'm looking for the same having just pulled a screw out of our tyre and having had the car out of action for 4 days while we got it sorted. We've got one of those useless cans of slime and a feeble compressor in the boot.
Let me know if/where you find one, we've also got 2019 car but with 17" wheels. Ideally I'd like to get space saver and tool kit/jack/polystyrene insert thingy. If anyone knows where to get these please let me know

My 500X 2015 came with the space saver as already mentioned.

I've removed (but am keeping) the shaped polystyrene insert as it is really a waste of space. It is bulky and to enclosed storage area is small. Once remove you have much more under floor/partion space.

 

[nick130]

Where do the jack and tool kit go in that case, in a bit of polystyrene that inserts into the spare wheel?
Sounds like the other bits of polystyrene are waste of space?

 

[s130]

Where do the jack and tool kit go in that case, in a bit of polystyrene that inserts into the spare wheel?
Sounds like the other bits of polystyrene are waste of space?

The Jack & Toolkit reside on the RHS/Driver's side in a rectangular bag as veiwed from the rear. The polystyrene "block" is/was on the LHS/Near Side.

The only consideration I could give this polystyrene block/insert is that it would help support really heavy loads on the boot divider panel. That said on my 500X has this divider floor panel is of some 15mm+ thickness and made of stiff board material.

It is possible that other 500X models cames with thinner divider panels or possibly only thinish carpet material.