OK, test my math
I measured tread depth on my rear tire at 9/32 and expect original was 10/32.
That is only 1/32 wear in almost 2,000 miles.
If worn to legal limit (not something I am likely to do), then I have 7/32 left.
At 2,000 miles per 1/32, I could run another 14,000 miles on the original tire.
In addition, as tires wear, they harden and last longer.
I think the math is correct, but I do not expect more than I would get with a M/C rear, which is about 10,000 miles, rather than 16,000 miles.
OTOH, most of my miles have been long distance.
That maths bit looks correct, but the assumption that tires '
harden and last longer' as tires wear is only correct to a point!! :lecturef_smilie:
It's correct in that as the (surface) compound ages, it gets 'packed down' tighter (which is why most tires lose some tread depth very quickly when first put into use, then the wear rate slows for a while) as well as slowly evaporating out the 'aromatics' that keep the compound soft and supple and grippy etc, so that over time and wear (at least initially) the tread will tend to harden and wear better.... :thumbup:
BUT, and here's the kicker; as you wear the tread down
more, the compounds used in almost all radial tires get softer as they wear (to better encompass & 'grip' the belt layers & cord/steel plies) and while that compound might get 'packed down' a little tighter during use, the deeper it is in the construction layers of the tire, the less aromatics will have evaporated out and so the softer the compounds remain!! :sour: So
MOST tires (radial tires especially) tend to lose some tread depth fairly quickly, ie, in the first 3-500 miles or so; then the 'apparent wear rate' tends to slow for quite a while, pretty much most of the tire's useful life; before the tread wear starts to speed up again juuust a little as you get closer to the legal minimum tread depth; after which the tread wear rate generally increases exponentially until suddenly, you're running on the cords!! :shocked:
All of which boils down to your 'educated guesstimation' of reaching 14,000 miles as being '
theoretically possible', but as you've already mentioned, '
practically unlikely'!
Reaching 10,000 miles - yeah, maybe; something less than 10,000 miles - quite likely!!
Especially if the bulk of your miles are long & reasonably 'hot' in terms of tire temps! :thumbup:
Funnily enough, tires that only ever get used for short runs at relatively slow speeds/never reaching their optimal traction temps do tend to 'harden' fairly quickly and then last pretty well; but unless you manipulate their pressures to increase their operating temp so that they do actually hit that optimal traction temp range, their grip levels will fairly rapidly degenerate until they are so bad that you'd be better off wearing teflon slicks while running a hi-speed slalom course on an ice-skating rink!! :yikes: Been there, done that! Got the badly stained shorts to show for it too!
Aren't tires fun?!?
hyea: :yes: :banghead:
Ps: the BFG g-Force Comps worked
REALLY WELL..... for a little while!! :sour: I'd think most would be hard pressed to get too much more than about 5000 summer-time miles out of them; but they could have a helluva lotta fun in those miles!
hyea:
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