Dear all,

 

I was wondering if anyone could help. I traded my 2005 A6 3.0 TDI saloon for a 2010 Superb estate. I have a set of wheels and winter tyres left over from my Audi in the garage. Do you think they will fit ok on the Superb?

 

The winter tyres are Dunlop Winter Sport 4D 225 55 16, and I believe the specifications of the wheels are: 7x16 5x112 ET45 57.1 Centre Bore (which means nothing to me!)

 

The Superb has 18 inch wheels on at the moment. It is an Elegance model.

 

Thank you so much for your help.

 

Dominic

This wheel sizing guide should answer your question.

http://www.briskoda.net/forums/topic/292173-wheel-fitment-guide/

Ooo... Excellent. I can use some old wheels off my Lamborghini Gallardo.

Yes the wheels are a perfect fit, I used the same A6 sized wheels for the 1st winter on my Superb,

the tyres are not the ideal size however as they should be 205/55/16” 

Thanks for all your help. Will the tyres need to be changed or will I be able to get away with using 225s rather than 205s?

Thanks for all your help. Will the tyres need to be changed or will I be able to get away with using 225s rather than 205s?

Here you go:

http://www.willtheyfit.com/index.php?width=225&aspect=40&diameter=18&wheelwidth=7.5&offset=46&width2=225&aspect2=55&diameter2=16&wheelwidth2=7&offset2=45#content

 

This is comparing what you have on at the moment with the Audi wheels and tyres.  The difficulty will be the increase in diameter from 637mm to 654mm - I don't know if it is too much?  I expect you'd get away with it but it's not ideal, and you'll need to tell Maxidot about the change so it can alter the speedo, mileometer etc.  That chart suggests the new wheels will read 2.55% under.

 

Michael

Thanks for all your help. Will the tyres need to be changed or will I be able to get away with using 225s rather than 205s?

No. The diameter is too big. The biggest that fits officially is 215/55R16, but most people simply use 205/55R16, since this dimension is much more common and much cheaper.

Don't worry about above, as you already have them, go ahead and fit them, then see if they rub on full lock or not. If they don't you'll be ok as there is plenty of room elsewhere. If they do rub, you'll need a slightly smaller tyre. They are only a small amount bigger so are likely to be ok.

If ok, your speedo may read over by 2.62%, so just under 72 when at 70. As said above you can make an adjustment in MFD

Thanks

Steve

If ok, your speedo may read over by 2.62%, so just under 72 when at 70. As said above you can make an adjustment in MFD

Thanks

Steve

The speedo will actually read under as the wheels are too big, therefore turning more slowly for the same speed. There's a good link above for the stats, as well as a pictorial diagram.

Sent from my GT-I9100 using Tapatalk 2

My mistake I typed over instead of under. So you'd be doing just under 72 when speedo reads 70, unless you adjust.

The speedo will actually read under as the wheels are too big, therefore turning more slowly for the same speed. There's a good link above for the stats, as well as a pictorial diagram.

Sent from my GT-I9100 using Tapatalk 2

By the way, the site you link to calculates it incorrectly. It's not out by a material amount, but it is wrong. It takes the difference in circumference, 52.5mm in this case and divides it by circumference of the new proposed wheel & tyre combination not the existing one. So it works it out as 2.55% not the correct difference of 2.62%

As I say, not a material difference.

Don't worry about above, as you already have them, go ahead and fit them, then see if they rub on full lock or not. If they don't you'll be ok as there is plenty of room elsewhere. If they do rub, you'll need a slightly smaller tyre. They are only a small amount bigger so are likely to be ok.

Only full lock is too simple. You must combine full lock, with a max retracted front wheel. This happens for instance when you make a right turn into a driveway (driving up the sidewalk), or when there is a speed bump right around the corner.

 

Furthermore: many people want to combine winter wheels with snow chains, and that is a definitive no-go with these too large wheels.

There is tons of room in the wheel arches of the superb to not to worry about it rubbing under compression with this small increase. Not that it matters what you and I say as OP already has tyres a he can try them for himself and see if they are ok.

What's he got to lose in trying them??

Hi there,

Thought I would post an update. I took them down to my local garage and they fit beautifully. I then drove around a bit exposing the car to full lock turning etc, and went up the biggest hill around here which also happens to be on a tight corner. Absolutely no problems.

My only lingering concerns are about my insurance and the speedometer. Do you think my insurance is still valid? Do I need to tell Admiral? I tried to find how to recalibrate the speedometer/Maxidot with regards to the 2.55% disparity in real speed vs reflected speed. All I could find in the manual was a reference to Winter Tyres, which actually happens to be an adjustable maximum speed alarm. Is there another function I am not aware of that I can alter?

Many thanks

Hi there,

Thought I would post an update. I took them down to my local garage and they fit beautifully. I then drove around a bit exposing the car to full lock turning etc, and went up the biggest hill around here which also happens to be on a tight corner. Absolutely no problems.

My only lingering concerns are about my insurance and the speedometer. Do you think my insurance is still valid? Do I need to tell Admiral? I tried to find how to recalibrate the speedometer/Maxidot with regards to the 2.55% disparity in real speed vs reflected speed. All I could find in the manual was a reference to Winter Tyres, which actually happens to be an adjustable maximum speed alarm. Is there another function I am not aware of that I can alter?

Many thanks

My mistake.  I thought the Winter Tyres option on Maxidot allowed you to correct the speedo display for other tyre sizes, but doing a google search looks like it is just a maximum speed alarm to warn you if you are exceeding the limit of your winter tyres (which may have a different speed rating from the summer ones).  In which case you're stuck with what is on the speedo which is pretty close.

 

Insurance - good question.  The list at the Association for British Insurers says you don't need to tell Admiral but this is only valid "provided that the tyres meet, and are fitted in accordance with, the relevant vehicle manufacturers’ specifications", which unfortunately yours aren't I don't believe?  The complete list (for the UK, for Sep 13 to 14) can be found by following the link on the Association of British Insurers page, https://www.abi.org.uk/Insurance-and-savings/Products/Motor-insurance/Winter-tyres )

 

Michael

My mistake.  I thought the Winter Tyres option on Maxidot allowed you to correct the speedo display for other tyre sizes, but doing a google search looks like it is just a maximum speed alarm to warn you if you are exceeding the limit of your winter tyres (which may have a different speed rating from the summer ones).  In which case you're stuck with what is on the speedo which is pretty close.

 

Not on a Škoda, (but it does work that way I believe on Audi’s) 

We use Audi alloys with winter tyres on our Octavia and have notified the insurer.  Given that you're using non-standard wheels and a non-standard tyre size I would definitely call the insurers to let them know.  The way I understand it, the ABI guidance only applies if you replace like for like summer to winter tyres using the same original equipment wheels - some insurers seem to be more flexible than others regarding this, but always best to check.

We use Audi alloys with winter tyres on our Octavia and have notified the insurer.  Given that you're using non-standard wheels and a non-standard tyre size I would definitely call the insurers to let them know.  The way I understand it, the ABI guidance only applies if you replace like for like summer to winter tyres using the same original equipment wheels - some insurers seem to be more flexible than others regarding this, but always best to check.

It seems to vary from insurer to insurer but doesn't seem to necessarily depend upon using the same wheels as for the summer tyres.  The listing has some insurers requiring notification if alloy wheels are being used, some requiring notification if wider wheels are used, some requiring notification just because, and many not requiring notification at all.  But yes, I think the OP does need to notify the insurer as the list is only valid for tyres that meet the manufacturer's original spec, which his don't.

 

Complete list here:

https://www.abi.org.uk/~/media/Files/Documents/Publications/Public/Migrated/Motor/ABI%20guide%20to%20winter%20tyres%20The%20motor%20insurance%20commitment.ashx

We use Audi alloys with winter tyres on our Octavia and have notified the insurer.  Given that you're using non-standard wheels and a non-standard tyre size I would definitely call the insurers to let them know.  The way I understand it, the ABI guidance only applies if you replace like for like summer to winter tyres using the same original equipment wheels - some insurers seem to be more flexible than others regarding this, but always best to check.

Just an FYI, this would be impossible on elegance superb's. They are fitted with 225/40 r18 92Y tyres from the factory. You can't get a Y rated winter tyre, highest being V for the 225/40 r18's

In my personal opinion, many on here are over thinking the insurance implications. Just ensure that the wheel and tyre combination have the correct load rating, and that they fit without issues and then inform your insurer if you wish.

Thanks

Steve

Its widely acknowledged that a lower speed rating is acceptable when fitting winter tyres.

 

This is the reason for the winter tyre speed warning setting in Maxidot.

 

I'd expect all other elements to meet the manufacturers requirements.

In my personal opinion, many on here are over thinking the insurance implications. Just ensure that the wheel and tyre combination have the correct load rating, and that they fit without issues and then inform your insurer if you wish.

Thanks

Steve

It's not inform your insurer if you wish, its if they require you to.  The list given twice previously in this thread specifies which insurers require this, and in what circumstances.

 

Michael