Tread depth BFG All Terrains

I have the AT specs here.

Tread depth is 16/32 inch so , half inch . . . which equates to about 12.7mm

Patrol22,
I'm not sure that you will be able to make any worthwhile conclusions about how far you can travel on any given amount of tread depth. Different tyres have different wear rates. Also, in my opinion, if a tyre's original tread depth was say 32/64ths and you'd done 30,000klm with the depth now down to 16/64ths (ie: half way down), you couldn't expect to get a total of 60,000klm out of them.....probably only about 40,000klm all up. You need to keep 2 things in mind.......(1) you can only safely use about 80% of the original tread depth or else you'd be running on slicks & (2) as the tyre wears, it's diameter decreases and it does slightly more revolutions per 100klm of distance travelled, so the wear rate is accelerated the more the tyre wears.
Just my opinion....I'm no bloody expert.
Cheers,
Roachie

Hi Pete
Just for interest, the last 10-15% of the tyres life is when you get the most problems with punctures, if you are going to stay around town that is fine, if heading out on a trip this can be a major problem.
Raywanderin' in retirement. victor 2010

Interesting to compare with the Cooper STs
http://www.coopertires.com.au/tyres/stt_specs.htmBob

Thanks for the advice everyone - will probably get a new set and keep my existing one's for round town and spares. I have 9 rims so running two sets of the same tyre makes some sense.