[V8] Tire Size on 17-inch Wheels

[Enzeder]

I run 245/45 Toyo Proxies on Bolero's with stock suspension and have very 
occasionally had a rub up front under full lock.  I drive around DC and 
Baltimore and the roads are pretty bad in town.

I know the stock size for the v8 A6 is 255/40 on 17x8's.


----- Original Message ----- 
From: <daves745t at optonline.net>
To: "Jelly Roll" <jellyroll4 at gmail.com>; "Audifans V8" <V8 at audifans.com>
Sent: Friday, December 29, 2006 8:12 PM
Subject: Re: [V8] Tire Size on 17-inch Wheels


> Thanks you guys for setting me straight.  I always thought it was
> in millimeters, I didn't realize it was a ratio.  I guess that's why
> offsets always confuse me and I always have to look at the diagrams
> to make sure I get it.
>
> For the record and for better or for worse (OK - worse, much worse),
> I'm currently running 215/45/17s.  The rims are 7inches wide
> and I'm not happy with the steering characteristics at all so
> I'll be looking for 17s by 7.5 or 8 (preferably 8 - can you say Boleros 
> :)?)
> and will look to run 235/45 as I think it is the narrowness of
> the tire combined with the weight of the car that is screwing up the
> steering geometry.
>
> I've found that while I love my V8Q, the steering in particular is much
> more luxury than performance - more play in the wheel and I can drive it
> with my pinky.
>
> -Dave
> 90 Pearl
>
> ----- Original Message -----
> From: Jelly Roll
> Date: Friday, December 29, 2006 7:40 pm
> Subject: Re: [V8] Tire Size on 17-inch Wheels
> To: "daves745t at optonline.net"
>
>> Hello Dave,
>>
>> The correct fitment for 17" wheels ont he V8 is 235/45, and you
>> don't want
>> to go taller than that w/o modifying it. I used this size tire
>> for a summer
>> tire a year or two. I lived in Vermont, and on those roads and
>> with sport
>> gas shocks and springs fitted, it was too rough and I went back
>> to 16"
>> (225/50) for summer and winter. Somewhere with smoother roads,
>> I'd have
>> preferred 17" for summer use.
>>
>> Also, the second number (45, 50, 60) is not an absolute
>> measurement of
>> sidewall height in mm - it is a ratio fo the sidewall height
>> against the
>> tread width. Thus the sidewall height on a theoretical (245/60)
>> is not 60mm
>> but (0.6 x 245) 147mm.
>>
>> Bryan
>>
>>
>>
>> On 12/29/06, daves745t at optonline.net wrote:
>> >
>> > Quick question - on a 17-inch rim,
>> > is a 60mm sidewall too high? Does anyone
>> > know if it will rub? I've got 45mm sidewalls
>> > on now and 1) the gap between the top of
>> > the fender and the tire is large, but more
>> > importantly 2) I've nailed a couple of potholes
>> > that rattled my fillings and a higher sidewall
>> > would definitely improve the ride.
>> >
>> > I measured the space and it would seem to
>> > clear with room to spare, but I checked out
>> > the Wheel Database on Jeremy's site and I
>> > didn't see any example of 60mm sidewalls on
>> > a 17-inch rim. Plus the pic of the Boleros (and
>> > some other 17s) were running tires 40mm sidewalls
>> > and there didn't seem to be a heck of a lot of space
>> > to spare, although the pics can certainly be
>> > deceiving.
>> >
>> > Thanks as always, and Happy New Year everyone!
>> > May your V8Q shift smoothly, idle quietly and
>> > never leak fluids.
>> > -Dave
>> > 90 Pearl
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>>
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