There is no denying the batteries (optima) are not the same.
Tires, well, let's see some proof.
get a picture of your depth guage in a BFG KM2 with the load range showing.
not handy no, I do have a set of km2's in a 31 at work.
I will have a look when I work on sunday
don't know if I can get the tread depth and the load range in the same picture though.
as for teh optima's, I know they do make different sizes with different cranking amps and so on.
but I think they should be the same for the same group size(this one I am not sure of, but what costco sells is usually the same, if not better than other places with most everything(or at least they try to make it that way))
I might try to make a few calls to check on the batteries though.
I figured as much.
I have a costco membership, well, I dont think it has expired, however when I went in and asked about tires, I was told I could only purchase the same size as the door sticker indicated. Could I get a set of 33x12.5x15 KM2's from Costco? I am up in fort mac right now, so if you wouldnt mind shooting me a price that would be great. I can provide you with my member ID if you need it. If you send prices, can you send them before any discount?
I would get excited if you could get Toyos, but I can get them from Direct Buy too.
just a sec, I re-read the thread, and I am making the assumption you work there...do you?
I do work there, check costco.ca too, you can order by size I think now, no toyo's though.(I just checked the site, adn that size does not come up)
some limitations on sizes we can mount, but if you have them on there now, and some other things work out, you should be ok.
don't rub, hold enough weight, etc.