[V8] V8 Digest V8 17" Tire Size

[Ron Wainwright]

I'm in the same boat....anchors. My 18's with 255/35 tire weigh in @ close to 50lbs a corner.... but I did remove weight with the BBK's & front coil overs.... sometime you sacrifice logic for looks ;-)

 But on the other hand I have a set of Urs4 16x8 fuchs with 225/50 Potenza tires & they are significantly lighter then the 18's. 

 I haven't experienced any significant hydroplaning, tramling.... I can say that I feel & hear every piece of sand on the road with my suspension setup... with my 18's on the car. But my suspension is new, my spring rates are INSANE & the addition of the bigger front sway bar & adding the rear sway bar setup from the 95.5 Urs6A makes the car feel like it's literally on rails.
 I all so run a 10mm spacer in the front & none in the back.

 Ron


--- On Sun, 1/25/09, Ed Kellock <ekellock at gmail.com> wrote:

> From: Ed Kellock <ekellock at gmail.com>
> Subject: Re: [V8] V8 Digest V8 17" Tire Size
> To: J123fs at aol.com, v8 at audifans.com
> Date: Sunday, January 25, 2009, 6:41 PM
> I have some 255/40-17s on 17x9 et35 rims and get no rub.  
> 
> If you do the calculations, 255/40-17 is almost exactly the
> same diameter as
> the stock size of 215/60-15.  
> 
> However, as Jack states, the extra width of the rubber on
> the road can cause
> all kinds of possibly unexpected sensations from
> hydroplaning to tramlining
> to increased noise, etc.  If you're front end
> components are compromised at
> all, I'm talking about ball joints, tie rods ends,
> subframe bushings, etc.,
> you will be very well aware of it with wider tires, even if
> you never felt
> anything untoward before.
> 
> And weight has at least as big an effect on acceleration,
> if not more, than
> diameter and its affect on final drive ratio.  The combo I
> quoted above
> weight 51+ pounds per tire and wheel and makes the car feel
> like a cattle
> cart.
> 
> Ed
> 
> > -----Original Message-----
> > From: v8-bounces at audifans.com 
> > [mailto:v8-bounces at audifans.com] On Behalf Of
> J123fs at aol.com
> > Sent: Sunday, January 25, 2009 9:27 AM
> > To: v8 at audifans.com
> > Subject: Re: [V8] V8 Digest V8 17" Tire Size
> > 
> > 
> > I run 255/40/17's on my 91. No rub no issues,
> though I do use 
> > 25mm spacers  
> > up front to help with handling.
> > They are about 5% smaller than stock Dia. (speedo
> reads fast, 
> > OK with me),  
> > can't hurt acceleration on my 91 automatic which
> needs all 
> > the help it can get  
> > off the line. 
> > For cars as big as ours all the tire you can
> reasonably fit 
> > under there is  
> > what you want. The only negatives are that a fat tire
> likes 
> > to Hydroplane  
> > easier, though the extra lateral width can help with
> stopping 
> > in the snow. The  
> > bigger tires can also help with raising your cornering
> limits 
> > but will hurt  
> > your gas milage as the heavier tires need more energy
> to get 
> > accelerated. I have seen folks with 225s on their cars
> 
> > stating they where the optimum  
> > size for handling, but did not want to argue with them
> that 
> > they are WAY  too 
> > small for a car weighting as much as a V8.
> > I run Kumho ASXs which are labeled "ultra high
> performance 
> > all season".  
> > Never felt the need for snows in a quattro though I
> live 
> > North of Boston, even  in 
> > a foot of snow on unplowed roads. Very good price: 99
> bucks 
> > from Tire Rack.  
> > They have worn WAY better than the uber expensive
> Michelin 
> > Pilot Sports, and 
> > the  uber cheap Hancooks that I have on the car
> previously. 
> > They are a bit 
> > noisy  though.
> > My 2 cents.
> > Cheers,
> > Jack
> >  
> >  
> > In a message dated 1/25/2009 9:46:10 A.M. Central
> Standard Time,  
> > v8-request at audifans.com writes:
> > 
> > V8 17"  Tire Size 
> > 
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