wrote:
better to leave the tyres alone, rotating the position of tyres went out
of fashion about 60 years ago.
I realize all the responses (so far) to this post were trolls or jokes, but
if you were actually serious, please do read my explanation below of what I
feel is the inherent value in rotating tires periodically.
In my case, the suspension is aligned (caster, camber, and toe anyway), and
tires are selected, mounted, and balanced (statically), and pressurized,
and repaired (from the inside with a patchplug), and rotated by me, so
everything about those tires is up to me, and not to a mechanic who is paid
by the hour who might skip some of the steps that I do (see below) to save
time.
Of course, I can only meticulously statically balance the wheel-and-tire
assembly, but the dynamic-balance test of driving at speeds shows no
dynamic imbalance that can be felt by the driver.
http://wetakepic.com/images/2018/02/...ic_balance.jpg
Given the well-aligned vehicle is driven daily on mountainous hilly steep
very windy roads, including a mandatory K-turn daily, the fronts inevitably
develop a unidirectional feathering that can be barely felt by the hand
which is palpable consistently at around 4K miles.
http://www.jeepforum.com/forum/attac...828_100512.jpg
Since the spare is a different brand, I rotate in the classic four-wheel
II-X-II-X pattern that puts each tire at each of the four corners over a
period of 12K miles (about 8 to 10 months of driving) - and - when I rotate
- I inspect the entire carcass for pebbles & shards as shown here from this
weekend.
http://wetakepic.com/images/2018/02/18/splinter1.jpg
To overcome some of the boredom of plucking detritus out of the tread, I
count the objects removed, where there are always more than 50 per tire, so
I try to approach a count of 100 objects removed, some of which turn out to
be this (staple?) shard I found yesterday.
http://wetakepic.com/images/2018/02/18/splinter2.jpg
While you intimate that the periodic inspection and rotation of tires has
"gone out of style", my reasonably logical position is that the selection,
mounting, balancing, pressurizing, inspection, repair, and rotation of
tires is a reasonable and rational act that results in increased safety and
life of the tires - partly because removing something like this shard never
goes out of style!
http://wetakepic.com/images/2018/02/18/splinter3.jpg