BenK wrote:
kellertx5er wrote:
What most people fail to realize about this issue is that there are rotational (centrifugal) forces acting on the tire structure. These forces increase with the SQUARE of the speed. So, while 70 mph vs 65 mph is only a 7.7% increase, the centrifugal forces increase by 16%. At 72 mph the increase is 22.7%.
Something to keep in mind when deciding how much is too much.
And most of the 'tread separations' are from rotational forces
(tension) on the 'ST' class tires so often mentioned here and on other
forums
Add to keller's comment, that the tires flat spot against the pavement
which has bending of the tire tread in two areas and the sidewall on
both sides
That flexing is what creates 'most' of the heat
If going very fast, there is a build up that the surface area can NOT
reject (transfer via conduction to the air and radiate to the air)
The flexing is determined by the rim width vs the tire size recommendations,
the PSI and the load, just to name a few
This is not an absolute...since one has never had a failure...therefore
no one will ever.....to someone has had a failure and therefore everyone will...
I've had ST tires separate. They were aired up to spec and only going
60MPH with a 10,000 utility trailer towed by my Sub
They were NOT hot to the touch either
I've had a F350 flying pass me towing a huge fiver. Could smell him
and about 2-3 miles ahead came across slow traffic...then the debris
field of rubber chunks...then that same guy on the side of the road
with the fiver. A couple other cars with cracked windshields behind
him
This is the laws of physics folks. There is no going around them, nor
a magic sauce...other than to follow their spec's, which includes MPH
Anyway, keller...am glad to see your post. Too often have to quote
Proverbs 26,4 on technically based topics...won't be able to view this
thread now that I've logged in...the blocking function does that
Your only quoting halve of the energy formula?
MM49
