LAC: Biodiesels, Diesels, TDIs' etc...

Ed Kellock ekellock at gmail.com
Fri Apr 28 01:42:02 EDT 2006


Wouldn't the weight and the probably larger, wider size of the performance
rubber be the real cause of the mileage difference and not the amount of
grip the rubber has on the road?  Just doesn't seem like the grip could
account for really any change in mpg.  Don't most poeple run smaller,
narrower rubber in winter than in summer?  And in many cases, different
wheels too?

Ed


> -----Original Message-----
> From: quattro-bounces at audifans.com 
> [mailto:quattro-bounces at audifans.com] On Behalf Of LL - NY
> Sent: Thursday, April 27, 2006 6:27 PM
> To: Taka Mizutani
> Cc: Quattro List; DeWitt Harrison
> Subject: Re: LAC: Biodiesels, Diesels, TDIs' etc...
> 
> 
> I experienced the same thing as Taka, switching from Nokian 
> RSi's to my Bridgestone RE011's on the Saabaru. Lost 2 MPG 
> going from a moderately low grip snow to a relatively sticky 
> summer. I've REALLY had to nurse the car to attempt to 
> reclaim some MPG, shifting at 1900 RPM, etc. Need to get the 
> UrS out for a roll.
> 
> LL - NY
> 
> On 4/26/06, Taka Mizutani <t44tqtro at gmail.com> wrote:
> >
> > I think in the case of a Infiniti M45 Sport, that those wide 19" 
> > performance tires
> > are not going to help fuel economy at all. I lost about 2 
> mpg in my 200q
> > when I
> > went from 225/45 to 255/40 tires.
> >
> > I've lost about the same 2 mpg going from my winter Hankook W303 in 
> > 175/65R14 to Falken Azenis RT-615 in 205/50R15. That's going from a 
> > pretty low-grip tire to a
> > really sticky tire. I imagine that in a heavier car, the 
> difference would
> > be
> > much worse.
> >
> > Taka
> >
> > On 4/26/06, DeWitt Harrison <six-rs at comcast.net> wrote:
> > >
> > > Well that's really good, IMHO. In my 2006 Infiniti M45 
> Sport (4.5 L, 
> > > 340 hp),  I'm lucky to get 15 mpg just loafing around 
> town. That's a 
> > > big cost penalty for a bit of rubber burning when you 
> need(?) it. I 
> > > think the V8q does a lot more with what it's got.
> > >
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