What is equivalent to 31 x 10.5 x 15 for trucks?

[Chunkster]

Hi,

Trying to look for replacement truck tires for my Pathfinder and searched and searched and can't find a definite answer to this.  Can someone tell me the equivalent tire size to 31 x 10.5 x15" within the same rim size, ie 265/70/15?  Why the difference in naming conventions?
Thanks,

Rich

[safristi]

265/75R15 would be the closest size for you, although still a little bit smaller than 31". We had 31x10.50R15s on our Xterra, and they were slightly (but noticeably) larger than the stock 265/75R15s.