I just had a skoda kamiq delivered , which has 17" wheels. The spare wheel is 16", and having checked, definitely has a smaller rolling radius of 1 inch or so. This can't be right surely?

Is the tyre profile the same on both 16 & 17"?

My Monte Carlo has 18” wheels and has a 16” spare wheel, but the tyre profiles are different profiles resulting in a very slight difference in circumference.

I've looked again and the profile on the 16" spare is 60. I'm now told by a Skoda service department (very helpful chap) that the ideal size for the 16" spare would be 65 profile, which would bring it closer to the 55 profile of the 17" alloys. Not sure whether it's a problem or not. Can anyone please advise what size they have with 17" wheels?

9 minutes ago, skoda998 said:

I've looked again and the profile on the 16" spare is 60. I'm now told by a Skoda service department (very helpful chap) that the ideal size for the 16" spare would be 65 profile, which would bring it closer to the 55 profile of the 17" alloys. Not sure whether it's a problem or not. Can anyone please advise what size they have with 17" wheels?

As you can see in the chart below, there are no 65 aspect ratio tyres approved by Skoda for the Kamiq.

A spare wheel doesn't need to be approved by Skoda...so you could use 195/65R16 6Jx16 ET35 for a spare wheel.

Wheels approved by Skoda are listed in the car's CoC (Certificate of Conformity).

For a 16" spare wheel to match a 205/55R17 6.5Jx17 ET40, perhaps consider 205/60R16 6Jx16 ET40. Doofy found that a 205/60R16 6Jx16 ET35 fitted in his Kamiq, so 205/60R16 6Jx16 ET40 should also fit. Bear in mind that 205/60R16 is a cheaper and more common tyre size than both 195/60R16 and 195/65R16.

Kamiq wheel sizes (approved by Skoda)

195/60R16 6Jx16 ET35 (winter tyre size, suitable for snow chains)

205/60R16 6Jx16 ET38

205/60R16 6Jx16 ET40

205/55R17 6.5Jx17 ET40

215/45R18 7Jx18 ET39

Skoda alloy rim accessory catalogue

https://eshop.skoda-auto.cz/cs_CZ/alu-kola/c/alloyWheels?q=%3ApriceAsc%3AcarType%3AKamiq%2B%25282019%252B%2529&text=#

Outside diameter of tyres

195/60R16 640.4mm

195/65R16 659.9mm (non-standard)

205/55R16 631.9mm (non-standard)

205/60R16 652.4mm

205/55R17 657.3mm

215/45R18 650.7mm

225/45R18 659.7mm (non-standard)

Doofy's Kamiq spare wheel thread

https://www.briskoda.net/forums/topic/517749-kamiq-spare-wheel/

Alcar 6664 6Jx16 ET35 5/100 57.1 steel rim (7.44kg)

https://www.mytyres.co.uk/rims/details?vehicleId=1077003525243802724&rimCode=ALCAR6664

Alcar 6977 6Jx16 ET40 5/100 57.1 steel rim (7.44kg)

https://www.mytyres.co.uk/rims/details?vehicleId=1087670437300671588&rimCode=ALCAR6977

Edited 11 September, 202511 Sep by Carlston

2 hours ago, skoda998 said:

I just had a skoda kamiq delivered , which has 17" wheels. The spare wheel is 16", and having checked, definitely has a smaller rolling radius of 1 inch or so. This can't be right surely?

Surely it's a get you home spare wheel, you're not going to run it for long on that.

My last car (a SEAT) had a different size spare to that fitted on the car, it was the standard spare supplied then. So as long as it fits the hub and goes round and round what's the problem?

2 hours ago, skoda998 said:

I just had a skoda kamiq delivered , which has 17" wheels. The spare wheel is 16", and having checked, definitely has a smaller rolling radius of 1 inch or so. This can't be right surely?

Maybe it has a 205/55R16 6Jx16 ET40 spare wheel.

205/55R16 has a 1" smaller outside diameter compared to 205/55R17, which is 3.9% smaller.

To keep the car's electronics happy, such as ABS, traction control, cruise control, etc. it might be best to keep the difference to less than 1.5%.

Edited 11 September, 202511 Sep by Carlston

5 hours ago, MickA said:

Surely it's a get you home spare wheel, you're not going to run it for long on that.

My last car (a SEAT) had a different size spare to that fitted on the car, it was the standard spare supplied then. So as long as it fits the hub and goes round and round what's the problem?

The problem is that I thought it traditional for all the wheels to be the same diameter. Who knows what mechanical damage could result from one odd sized wheel, especially on the driven wheels at the front?

@skoda998 - You need to answer the basic question first. Is this the standard, get you to the tyre depot spare or is it an actual 16 inch wheel and tyre?

Either way it's not the same as your 17 inch wheels so it's not for driving miles at high speed.

You might get an ABS warning but it's unlikely.

Your car has differentials (at least one) and fully expects that the wheels will rotate at different speeds.

As has been posted the wheel well limits your choice of spare wheel unless you are prepared to have the spare partially deflated to fit in.

13 hours ago, skoda998 said:

The problem is that I thought it traditional for all the wheels to be the same diameter. Who knows what mechanical damage could result from one odd sized wheel, especially on the driven wheels at the front?

It’s standard practice to fit space saver/ smaller spare to rear.

Re Tradition. Staggered wheels are no unusual. #Tom Jones.

Audi RS3 option wider front wheels / tyres.

As far as a Spare/Emergency wheel, front wheel drive or rear wheel drive of a slightly different total circumference, tread type, compound, pressure, width, tyre pressure, maybe GREEN Unused.

Slow down even if there is no WARNING Sticker. 50 MPG max.

Reset the TPMS when you fit the spare, it may then not show any TPMS warning until you refit the correct size tyre.

Front and rear or one new replaced tyres might be slightly different tread depth, circumference, total diameted.

AWD, Part time AWD / 4x4 can be different. CC / ACC disabled etc.

8 hours ago, Kenny R said:

It’s standard practice to fit space saver/ smaller spare to rear.

You'll need 2 jacks or an axle stand then if the front has the puncture, or it's a faff removing refitting the wheels about. On a busy road it would go wherever and sort the front or rear bit out later

1 hour ago, MickA said:

You'll need 2 jacks or an axle stand then if the front has the puncture, or it's a faff removing refitting the wheels about. On a busy road it would go wherever and sort the front or rear bit out later

Only the one jack required, jack up rear remove rear wheel, fit spare to rear, then remove front wheel with puncture and replace with wheel removed from rear.

Get a matching tyre / wheel and fit and continue the journey. Maybe the boot floor is an ickle higher.

Simple cars, simple slightly different sized Space Savers or Savers of space is the Traditional Way with 'Simply Clever' Skoda.

There will be cars with directional tyres and the spare will not be, but if it is then a 50/50 chance it is for the side of the car where there is the puncture

Remember - Space saver tyres are NOT for regular use. They are speed limited to 50kph and also range restricted - meant ONLY to get you to the nearest tyre repair/replacement facility.

On 11/09/2025 at 11:49, skoda998 said:

I just had a skoda kamiq delivered , which has 17" wheels. The spare wheel is 16", and having checked, definitely has a smaller rolling radius of 1 inch or so. This can't be right surely?

What is the problem you think you need to address?

The problem, not the difference between the spare tyre and your fitted road tyres.