[urq] tires and premature ageing

Sat Jan 18 07:42:00 PST 2014

Now the question I have is: did Audi change the speedometer in '84+?

I didn't think they did, but instead thought the difference in tire circumference was tolerable.

But the reality remains, tire selection sucks for 15" wheels. And it won't improve.

It isn't any better in the 16" size I use to run, 225/45/16.

Selection is excellent for the ur-S4 size, 225/50/16, but I have no experience running that size on a urq.

On Jan 18, 2014 4:44 AM, Martin Pajak <martin at quattro.ca> wrote:
Hi Lono,

Compared to the original '83 size which is 205/60 15, Tony is correct.
Tire size was year, not wheel size specific.  Up to '83 205/60 15 and '84
and up 215/50 15.

http://www.1010tires.com/Tools/Tire-Size-Calculator/205-60R15/225-50R15/215-
60R15

So in reality your '83 speedometer should actually read faster with the
225/50 15.

Hope this helps.
Martin Pajak

http://www.quattro.ca

1981 VW Scirocco, all original
1982 Audi Ur-quattro, SQ project
1983 Audi 80 quattro, Euro 2-Tür
1984 Audi Ur-quattro, 20vt with 6-speed
1993 Audi 90 CS quattro, 2.5 TDI with 6-speed
1993 Audi 80 quattro Avant, 2.5 TDI with 6-speed
1994 Audi S2 Avant, stock

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On Behalf
Of Lino Valadas
Sent: 17-Jan-14 22:09
To: Tony Lum
Cc: audifans urq
Subject: Re: [urq] tires and premature ageing

I'm following this thread with interest, because sooner or later I will need
to replace the 225/50x15 Kuhmos that I have on 8J Ronals on my 83 Urq.

I was confused by Tony's comment.  If the factory recommend size for the Urq
8J is 215/50x15 how can the 225/50x15 be undersized?  If nothing else it
would be oversize.  It does affect my speedometer to show a lower speed than
what I'm actually traveling at.  Am I missing something?

Lino
83 Urq 900500

Sent from my iPad

> On Jan 17, 2014, at 7:32 PM, "Tony Lum" <tlum at flash.net> wrote:
>
> Hi Steve,
>
> Maybe special order only.  Their website has no tires in this size :(
>  225-50/15 would be last resort but 3.3% undersized.
>  215-60/15 are plentiful and just 1.9% oversized if they'll mount on the
15x8 Ronals.
>
> Tony
>
>
>
>
>
> ________________________________
> From: Steve B <urq at pacbell.net>
> To: John <johnkarasaki at msn.com>
> Cc: audifans urq <urq at audifans.com>
> Sent: Friday, January 17, 2014 7:24 AM
> Subject: Re: [urq] tires and premature ageing
>
>
> Odd, I was able to get a set of BFG tires in 215-50/15 for my car not that
long ago.  I got them from America's Tire.  IIRC they are G Force Sport.
>
> Steve Buchholz
>
>
>
> John <johnkarasaki at msn.com> wrote:
>
>> Are you seeing what I am? 12 tires and most of them competition tires are
not plenty.
>>
>> On Jan 16, 2014 2:41 PM, kleinbiker1 at aol.com wrote:
>>
>> I have a completely stock 85 urq with the factory 8" wide ronals.  I
mounted Kuhmo 225-50-15 and they look great.  There are plenty of tires in
that size.
>>
>> http://www.tirerack.com/tires/TireSearchResults.jsp?skipOver=true&wid
>> th=225%2F&ratio=50&diameter=15
>>
>>
>>
>>
>>
>>
>>
>> -----Original Message-----
>> From: Del Tergo, Mike <Mike.DelTergo at Bangor.com>
>> To: UrQ <UrQ at audifans.com>
>> Sent: Thu, Jan 16, 2014 10:56 am
>> Subject: Re: [urq] tires and premature ageing
>>
>>
>>
>> This is a great site for figuring clearances with different tire and rim
sizes.
>> As far as shops refusing to mount tires, my independent wrench is
>> fine with it, otherwise I'd bring in just the rims and tires and they
>> have no reference point without the car for making any
oversized/undersized judgement.
>>
>> http://www.1010tires.com/Tools/Tire-Size-Calculator
>>
>> http://www.1010tires.com/Tools/Wheel-Offset-Calculator
>>
>>
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