If you go to Tirerack.com you can look up the revs/mile figures for the
tires you are considering. I personally wouldn't go beyond a 10% increase,
ie 215/65R15.   Too much taller will work your motor much harder, and the
braking will be noticeably weaker because of the increased flywheel effect
of the larger diameter tires.
I learned this the hard way myself, you can make your own choice!

On 6/9/06, Mark C <obeechi@runbox.com> wrote:
>
> What about accelerating up hills? Have you tried this?
>
> > I went to 225/70R15 from 14 rims and notice no problems in acceleration.
> > What I did notice is an incredibly better ride and side wind stablity
> and
> > the assurance that cruising at 70mph has the RPM below 4K! If you ride
> the
> > freeway go that route especially with an autobox.
> >
> > Shawn
> >
> > On 6/8/06, Mark C <obeechi@runbox.com> wrote:
> > >
> > > I have the option, in a 15 inch wheel, of
> > >
> > > 205 65 15
> > > 225 70 15
> > >
> > > I'm wondering how much of a difference in torque and power the 225 70
> > > would make...
> > >
> > > I realize that on the one hand the rpms in third gear automatic would
> be
> > > reduced in freeway speeds
> > >
> > > On the other hand it would slow acceleration and how fast you can go
> up a
> > > mountain...
> > >
> > > I have a suburu 2.2 legacy engine
> > >
> > > Would appreciate any input, thanks.
> > >
> >
> >
> >
> > --
> > shawn feller, ohio
> > 1986 Vw Vanagon GL Westfalia
> > 1993 Vw Eurovan GL
> >
> > www.carboncow.com
> > www.carboncow.net
> >
>
> ----- End Original Message -----
>

--
Jake
1984 Vanagon GL
1986 Westy Weekender "Dixie"
www.crescentbeachguitar.com