As you might guess from the subject, I own BFG TA K/O LT245/75/R16E tires and they're mounted on 8" rims. The problem is, the spec range of rim widths for that tire is 6.5 to 7.5", see http://www.bfgoodrichtires.com/assets/pdf/all_terrain_ta_kd.pdf. If I had known that I would have bought different tires as there are similarly sized tires from other manufacturers that are spec'ed to work with 8" rims. I originally bought those rims for 255 mm width tires.

The tires work great, and I'm not worried about running them under normal pressure (say, 35--40 psi).

But I'm afraid to air them down and maybe blow the bead.

Any thoughts on how low I can go without blowing the bead? 25 psi is surely safe. I'd like to go as low as 20 but would be afraid to go to 15.

For anyone reading quickly, the point is that the tires are designed for a narrower rim, so they need some pressure to push the bead out to 8". So it doesn't seem they can be aired down as much as a tire designed for a wider rim.

???

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2003 Liberty, ARB bumper w fogs and KC SlimLites
Front Franky II HD, rear OME948 w Rancho RS9000/XL shocks
LT245/75R16C Duratracs on Moabs
4.10 gears, front & rear ARB lockers, Boulder Bars, AFE Stage 2 intake
Surco rack w BajaRack jerry can holder
Cobra 75 WX ST

06 LJ Rubi, 3.5" RE SA and 33" BFG KM2s, GenRight tank

with an 8 inch and the BFG in a 245-75 I would think about 20-24 , you could possibly go lower depending on the type of wheel also since that at times makes a difference,
your main problem is the wheel width but you already know that

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited

I've heard the Rubi Moab rims are designed to hold at lower pressures - don't know how low and you'll probably have to drop it enough to blow a bead before you know for sure - i.e. Trial and error works - but the errors can be painful.

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2005 CRD
stuff
Skeptic quod gratis asseritur, gratis negatur

duh should of read what he had
ATXKJ, I have heard the same about Moabs

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited