DIYbanter - View Single Post - Logic for or against the tire-rotation pattern X H X H

Meanie[_7_]

On 7/28/2017 4:38 PM, Ralph Mowery wrote:
In article , says...

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?

Years ago the recommended patern was the X type where each tire was at
each position at the end of all the swapping. Even the spare tire was
recommended, which would not be a bad idea was it not for the minispare
as tires sort of dry rot even if not on the road.

When radial tires came out,it was recommended to keep the tires on the
same side so they always turned the same direction. Just bought a new
2017 Toyato and the recommended rotation is to keep the tires on the
same side.

Sure wold be a pain to take them off the rim and reverse them. Probably
would put the letering on the wrong side,and if white wall or raised
letters, they would be facing the inside of the car instead of the
outside.

Pert of me believes the motive for swapping sides was to increase
business for the garages since the entire car would need to be lifted to
remove all tires as opposed to one side each for front and back, which
most garage mechanics can accomplish.