On Saturday, July 29, 2017 at 11:26:32 AM UTC-10, Andy wrote:
> On Saturday, July 29, 2017 at 12:21:28 PM UTC-5, dsi1 wrote:
> > On Friday, July 28, 2017 at 9:44:45 AM UTC-10, Roy Tremblay wrote:
> > > What do you think about the 4-tire rotation pattern below?
> > > X > H > X > H year 1
> > > X > H > X > H year 2
> > > etsetera
> > >
> > > Basic assumptions:
> > > Assume the alignment is within spec.
> > > Assume the fronts consistently wear differently than do the rears.
> > > Assume that F->B differential wear is symmetric per axle.
> > > Assume the spare is a donut and therefore out of the picture.
> > > Assume a rotation every change of seasons (about 4K miles roughly).
> > > Assume bidirectional tread.
> > > Assume whitewalls on one side (otherwise I could flip them on the rim).
> > > Assume USA crowns, which is to say almost no crown most of the time.
> > >
> > > How does the logic of this X > H > X > H rotation pattern look to you?
> > >
> > > Assume tires go on in year 1, front to back, numbered:
> > > 1 2
> > > |
> > > 3 4
> > >
> > > The first X-pattern rotation in Spring of year 1 gets us:
> > > 4 3
> > > |
> > > 2 1
> > >
> > > The H pattern in Summer of year 1 gets us to:
> > > 2 1
> > > |
> > > 4 3
> > >
> > > The X pattern of Fall of year 1 gets us to:
> > > 3 4
> > > |
> > > 1 2
> > >
> > > And then, finally, the Winter H pattern of year 1 gets us back to:
> > > 1 2
> > > |
> > > 3 4
> > >
> > > At the end of the year, with this X > H > X > H pattern I devised, I think
> > > the tires would have been on every combination but always as a set per axle
> > > because my fronts wear differently than do my rears.
> > >
> > > If I flip them on the rim, does that help in giving me rotation options?
> >
> > My guess is that tire rotation is mostly a device used by tire companies to get people to come into their shops on a regular basis. I've never done it nor am I likely to ever start. I don't have enough time and money to just toss it into the wind.
>
> Rotating tires and re-balancing increases their life and places like Discount Tires do not charge for the service.
>
> Not doing so is "tossing money into the wind".
> But tire companies love you. :-)
>
> Andy

No charge, that's great! Now if they can rotate the tires in 60 seconds or less, I'd go for it. Ideally, you want your tires to be rotated every night while you're sleeping. I believe that would be the best way to go.