2007 1.4 Spare wheel - oldpostie
I have just bought a Fiesta and see that the spare has a 14" diameter, when the car wheels are 15".
I am told this is quite common. Wheels of different diameters, or are the rims the same, just a smaller tyre.
This does seem a bit strange.
2007 1.4 Spare wheel - mfarrow
The tyre outer diameter will be the same. Quite common, nothing to lose sleep over.
2007 1.4 Spare wheel - jc2
Better than a "space saver"-no speed restriction!!!
2007 1.4 Spare wheel - oldpostie
Thanks for the replies. It does have a speed restriction sticker on it though. At least there is a wheel there.
2007 1.4 Spare wheel - jc2
Mine hasn't but then it's a Ka not a Fiesta and no mention in driver's manual.
2007 1.4 Spare wheel - John S
Most unusual to have a speed restriction on a 'full sized' spare. This is normally a perfectly standard tyre, albeit of smaller wheel size and with a higher profile tyre than the road wheels so as to maintain the same rolling radius. Usually cars with alloy road wheels get the steel wheel from a lower spec model. The handbook usually recommends taking care when driving on it, but that's all. if it's got a speed restriction sticker I'd guess it's a space saver.

JS

Edited by John S on 21/06/2008 at 15:48

2007 1.4 Spare wheel - pmh
There may be no speed restriction, but it would certainly fail an MOT if fitted, and I suspect could result in prosecution under 'Construction and Use?'

Braking performance would almost certainly be compromised, would you want to do an emergency stop in the wet from 70 mph in heavy traffic?



pmh
2007 1.4 Spare wheel - John S
These 'non-matching' spares, including space savers, are common fitments, and one assumes that the major car manufacturers are happy with their legality, so unless it's clear their use is being abused I suspect a C & U prosecution is unlikely. The space savers certainly compromise handling and braking, and that's one of the reasons for the speed restriction. This effect will be far less significant with a full size (albeit diffferent sized) spare, hence the usual recommendation to be aware of the potential effects, although not usually a specific speed restriction. It's true a car won't pass an MOT with either type fitted, but that doesn't make their use an offence.

JS
2007 1.4 Spare wheel - oldpostie
Interesting comments, which I appreciate. I'm glad I have a wheel, rather than a repair outfit, which I suspect would be of little use in the remoter parts of Sutherland, with a badly damaged tyre, and out of mobile phone range. Having a different tyre suggests someone is saving a few pennies, or using up an overstocked item, to my mind.
2007 1.4 Spare wheel - jc2
No-they are normally used to give you more space in the car or boot-usually being narrower and fitting into a smaller space;what you do with the bigger one when it is removed is a further problem.Porsche used to recommend putting the removed tyre/wheel on the passenger seat or lap and supplied a plastic bag to protect seat/clothes.
2007 1.4 Spare wheel - John S
Yes, saves money. Steel wheel not alloy. Cheaper, higher profile, lower sped rated tyre. Like jc never got the 'space saving' bit. You've got to put the original somewhere when it's punctured.

JS
 

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