Spare Wheel for Super 2018, 18" Wheels

[Shaw8670]

I have a 2018 estate which has no spare and a polystyrene holder of a shape that won't take a wheel. Is there another polystyrene fitting that I need to get hold of and how much does it matter if there is a slight diameter difference on the spare? The  difference would be about 1cm?

 

[pleasing]

There isn't another fitting/holder, spare wheel just sits in the recess, its heavy and grippy enough that it wont move around.  Let me know if you find a use for the old polystyrene insert, mines just taking up space in the garage.

[Carlston]

3 hours ago, Shaw8670 said:

I have a 2018 estate which has no spare and a polystyrene holder of a shape that won't take a wheel. Is there another polystyrene fitting that I need to get hold of and how much does it matter if there is a slight diameter difference on the spare? The  difference would be about 1cm?

 

 

I don't know what size rims and tyres you have on your car, but maybe you could use a 215/60R16 tyre fitted to a 6.5Jx16 ET41 5/112 57.1 steel rim as a spare wheel.

 

Alcar 8426 6.5Jx16 ET41 5/112 57.1 Steel Rim

 

https://www.autodoc.co.uk/alcar/14750743

 

Also try mytyres for new steel rims. Sometimes they are cheaper than autodoc.

 

If this doesn't fit in the spare wheel space, it might be worth considering using a smaller tyre fitted to this rim such as a 205/55R16. This would be used as a space saver as it wouldn't match the other tyres and rims. Don't drive at over 50mph/80kmh when using a space saver wheel.

 

Edited 10 December, 2020 by Carlston

[MartiniB]

there is no space for 215 mm width under floor cover, but is enough room for full diameter tire

i have replaced to 205/65r16 (not tested on the road yet)

because stock 205/55r16 disables Cruise Control (were installed on rear axle)

 

  

On 14/04/2018 at 08:09, MartiniB said:

diameter comparison to 215/55r17 and 225/55r17:
205/55r16 _ -5.3% _ -6.7%
205/65r16 _ +0.8% _ -0.7%

 

 

Edited 29 December, 2020 by MartiniB

[IJWS15]

The spare doesn't just sit in the well, it is fastened in, you don't want it flying around in the car if you have an accident.

[Carlston]

12 hours ago, MartiniB said:

there is no space for 215 mm width under floor cover, but is enough room for full diameter tire

i have replaced to 205/65r16 (not tested yet)

because stock 205/55r16 disables Cruise Control

 

Just change all the wheels to 195/65R16 on 6Jx16 ET40 steel rims. The spare should then fit in the wheel well without problems and all the wheels will be the same size.

 

Michelin Energy Saver 195/65R16 92V

https://www.autodoc.co.uk/tyres/michelin-3528707979155-797915

 

Alcar 9490 6Jx16 ET40 5/112 57.1 Steel Rim (from the Skoda Superb MK1)

https://www.autodoc.co.uk/alcar/14750886

 

Edited 10 December, 2020 by Carlston

[Shaw8670]

Thanks for the replies so far! A

[MartiniB]

11 hours ago, Carlston said:

Just change all the wheels to 195/65R16

what were the reason?

they are for 1.1% smaller than 215/55r17

and 2.6% smaller than 225/55r17

 

by https://tiresize.com/comparison/

 

[Shaw8670]

Can you fit the whirly plastic screw to screw the wheel down? 

[Carlston]

11 hours ago, MartiniB said:

what were the reason?

they are for 1.1% smaller than 215/55r17

11 hours ago, MartiniB said:

what were the reason?

they are for 1.1% smaller than 215/55r17

and 2.6% smaller than 225/55r17

 

 

The reference size for the Superb MK3 is 215/60R16.

 

The outside diameter of a 195/65R16 tyre is less than 0.7% smaller than a 215/60R16, so can be considered almost identical.

 

When changing to a non-standard tyre size, it's usually considered acceptable if the difference between the outside diameters of the tyres is no more than 1.5% to 2%.

 

The benefit of fitting 195/65R16 tyres on 6Jx16 ET40 rims is so that one will fit in the spare wheel well. 215s are apparently too wide to fit in the spare wheel well.

 

Another benefit could be the price.

 

On autodoc, the cheapest Michelin summer tyre in the 195/65R16 size is £73 whereas for the 215/60R16 size it's £97. Not only that, but this 195/65R16 size is V-speed rated whereas this 215/60R16 size is only H-speed rated. For the V-speed rating of the 215/60R16 size tyre, the difference in price between the 195/65R16 size and the 215/60R16 size in the Michelin summer tyre on autodoc is even more.

 

Another benefit to using a 195/65R16 over the 215/60R16 size is fuel economy. The narrower tyre will have less drag so more mpg. And if those benefits aren't enough, the 195/65R16 will be a little more comfortable than the 215/60R16 size and will be less prone to aquaplanning. It really does seem like a win, win to me.

 

Michelin 195/65R16 92V

https://www.autodoc.co.uk/tyres/michelin-3528707979155-797915

 

Michelin 215/60R16 95H

https://www.autodoc.co.uk/tyres/michelin-3528707751140-775114

 

Edited 11 December, 2020 by Carlston

[Carlston]

11 hours ago, Shaw8670 said:

Can you fit the whirly plastic screw to screw the wheel down? 

 

Skoda Online Parts Catalogue (this is for the Superb MK2 as that catalogue only goes up to 2016 models)

http://www.oemepc.com/skoda/part_single/catalog/sk/markt/CZ/modell/SUP/year/2016/drive_standart/768/hg_ug/011/subcategory/11010/part_id/2546939/lang/e

 

Skoda Online Parts Catalogue (this is for the Octavia MK3)

http://www.oemepc.com/skoda/part_single/catalog/sk/markt/CZ/modell/OCT/year/2016/drive_standart/753/hg_ug/011/subcategory/11010/part_id/2546939/lang/e

 

Maybe try a deflated wheel and try and work out how much you have to play with. I would have thought it was designed to take a flat tyre.

 

It looks like the Superb MK3 whirly plastic screw might be shared with other models such as the Octavia and the Superb, as they sometimes share the same OEM part number.

 

What OEM part number is your whirly plastic screw? (It should be moulded into  the plastic)

 

The OEM part number will look something like this: 1K0803899D

 

The Yeti, which uses tyre sizes including 215/60R16 and 225/50R17 has OEM part number 1K0803899E for its whirly plastic screw. Notice how similar this number is to the Octavia MK3 and Superb MK2 OEM number with just the last digit being changed from D to E. This could represent a small increase in length to account for the wider tyre sizes that the Yeti uses compared to the Octavia MK3 and Superb MK2...which used tyre sizes including 195/65R15 and 205/55R16.

 

Edited 11 December, 2020 by Carlston

[MartiniB]

@Carlston

i found benefits of fitting bigger

225/55r17 instead stock 215/55r17

1. 10mm wider

 a) more grip because increased contact area

 b) less wheel spin on the wet

 c) alloys got extra protection from the side

2. 5mm higher

 a) increase of clearance

 b) speedometer and odometer values now are closer to reality

 

[OFFS]

Hi Shaw8670.  My previous Mk 3 with 18inch wheels and had no spare and i made the mistake of buying the "correct" space saver from Skoda dealer.  I do a lot of miles and didn't want to rely on a repair kit.  Cost the thick end of £200 as i remember.  Fitted in the recess perfectly with the polystyrene insert taking up the gap between the wheel and boot mat.  When i changed the car for another Mk3 which had a full size spare i kept the space saver thinking i would sell it on easily as it had  never been used, genuine Skoda, tools included part etc.  As it turns out not a lot of people want them, not locally anyway.  I think the steel rim with suitable tyre is the most popular option and perhaps only consider a space saver for ease, from a selection POV.  I still have my space saver in the shed getting in the way.  I'll get round to advertising it again at some point.  I cut up the poly insert and used part of it as a storage box above the boot floor.  When the spare is in the recess there is really very little room for anything else.

[facet edge]

£200 is a bit of a rip off when they charge £100 for the full size spare.

 

[OFFS]

On reflection I think your right.  At the time it suited me and was happy not to rely on a repair kit.  We live an learn I guess.

[Bap33]

Hi all,

Since I don’t have the same tyres dimensions for winter (215/55/17) and and summer wheels (235/40/19), I had a look last week on my spare wheel dimensions. I was very surprised to see that the overall diameter is really smaller, since it is a 205/55/16.

 

Could it be a mistake or is it the standard dimensions for spare wheel on a Mk3?

 

To me it should be 215/60/16 or 205/65/16... according to previous discussions

if anyone could have a look to its spare wheel to confirm if it’s a mistake or not... 😉

I would highly appreciate... 😉

[MartiniB]

24 minutes ago, Bap33 said:

it should be 215/60/16 or 205/65/16...

Scrool to post nr 4