16" alloys, 15" spare?

[Black Greyhound]

Hi folks

I've just bought some 16" alloys for my mk7 with a 15" steel spare. Would I be able to use the 15" spare in the event of a puncture just to get to the nearest tyre shop or would this create problems?

[Punto443]

If non abs, shouldn't be a problem.

If it does have abs, then after a few miles the van may generate s fault code due to incorrect wheel speed signal as the smaller wheel will be travelling faster.

This happened to me and the van dropped into reduced power (limp) mode.

Although it would have been more exaggerated as I'm running 18's with a 15" spare.

[knobby1]

Hi folks

I've just bought some 16" alloys for my mk7 with a 15" steel spare. Would I be able to use the 15" spare in the event of a puncture just to get to the nearest tyre shop or would this create problems?

It will depend on the diameter of both size "tyres", if they're the same diameter, you'll be fine, ....if not, you'll have ABS issues as Punto has mentioned. Can you tell us what tyres sizes you have on the wheels..??

[Black Greyhound]

Thanks for replies.

Hi folks

I've just bought some 16" alloys for my mk7 with a 15" steel spare. Would I be able to use the 15" spare in the event of a puncture just to get to the nearest tyre shop or would this create problems?

It will depend on the diameter of both size "tyres", if they're the same diameter, you'll be fine, ....if not, you'll have ABS issues as Punto has mentioned. Can you tell us what tyres sizes you have on the wheels..??

New tyre size 205/65/16
Old tyre size 195/70/15

[wronghole]

My van runs on 215 /75/16 as normal (ex RAC) . 2 years ago just to see what it looked like i put 215/65/16 on the front, well after only a few hundred yards all hell broke loose, abs esp lights flashing like mad little or no brakes also abs kicking in for no reason. So as others have mentioned previously NO. Make sure your spare is the same size both in wheel and tyre size .

[bigjohnthomas]

On my little green van when I put the spare on it didn't do anything and was quite happy
It had 16 s and the spare was 15 standard 195/70/15
And the 16s where 205 /65 /16

Put the 15s on the back of the 350 mk6 lwb once and that put the abs light on still went ok though
Won't go on the mk7 because of bloody discs
Bloody ford

[Altransit]

New tyre size 205/65/16
Old tyre size 195/70/15

The 16" wheels will have a slightly larger rolling radius than the 15", but as it's less than 3%, the ABS will never detect a difference, as BJT has said above

[knobby1]

New tyre size 205/65/16
Old tyre size 195/70/15

The 16" wheels will have a slightly larger rolling radius than the 15", but as it's less than 3%, the ABS will never detect a difference, as BJT has said above

+1..^^

Lord Knobrot

[ned]

Its very scientific you know, the side wall height is a % of the tyre width so,

195/70/15 is 195mm tyre width, 136.5mm side wall height, 15" : 381.mm wheel size so overall rolling radius is 517.5mm
205/65/16 is 205mm tyre width, 133.25mm side wall height, 16" : 406.4mm wheel size so overall rolling radius is 539.65mm

There will be a 22.15mm difference in overall size between the 16's and the 15.

Just over 4% difference

Hope that helps. N

[Black Greyhound]

Its very scientific you know, the side wall height is a % of the tyre width so,

195/70/15 is 195mm tyre width, 136.5mm side wall height, 15" : 381.mm wheel size so overall rolling radius is 517.5mm
205/65/16 is 205mm tyre width, 133.25mm side wall height, 16" : 406.4mm wheel size so overall rolling radius is 539.65mm

There will be a 22.15mm difference in overall size between the 16's and the 15.

Just over 4% difference

Hope that helps. N

Blimey, my head hurts now!

I think I'll risk it if I have to and hope there's a tyre place close by!

Thanks for all the advice

[bigjohnthomas]

Now then ,now then ..

As it appens..
Sootys got a pair with no profile on them it just says 12"
What's going on there then guys and gals?

Regards
Sir Jim allcock

[ned]

Now then ,now then ..

As it appens..
Sootys got a pair with no profile on them it just says 12"
What's going on there then guys and gals?

Regards
Sir Jim allcock

Rattle rattle, jewellery jewellery

Its difficult to work out the profile of rubber bands N

[bigjohnthomas]

they are quite small
But the ones with a profile on them are bigger

Great big massive fook right off monster sooty tyres

[Altransit]

Now then ,now then ..

As it appens..
Sootys got a pair with no profile on them it just says 12"
What's going on there then guys and gals?

Regards
Sir Jim allcock

No stated profile means that it's a "standard" profile of 82%, (like my Mini tyres, which are 145/10)

[bigjohnthomas]

10 inch and I thought sootys funny little wheels were small