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Unread 11-21-2008, 08:15 PM   #1
WJJay
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all terrain to mud terrain issues?

I have a 3" IRO lift with 265/75/16 bfg all terrains and soft 8s. i've already done some trimming to take care of some rubbing. i'm planning on getting km2s soon and was wondering if i will need to move down in size or if i am gonna have to do a lot more trimming. currently i do rub some time on the rear part of the front wheel wells--mainly while turning in reverse. will this be worse with a mud terrain?

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Unread 11-21-2008, 08:24 PM   #2
Kramer H
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yeah it should..

i had some used 33125017 pro comp at's and moved to the km2's (32115015) and got quite a bit of rubbing, its a blockier tread pattern, i dont know how much more it will rub, but it will be taller and a tad wider (due to the over the shoulder tread design). but hey, the next size down is a 245, and who wants 245's
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Unread 11-21-2008, 08:26 PM   #3
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its a possibility since the treads are alot beefier, and the different tread could come in contact to a part in where the AT tires did not. If all else fails, buy some spacers. $60 at IRO.
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Unread 11-21-2008, 08:34 PM   #4
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You need to check the actual size of the 265/75/16 bfg a/t and the actual size of the km2 in 265/75/16. Just because you convert it to metric doesn't mean it actuate. If they are the same size and I mean to manufacture spec, they should rub the same as the others but the thing that is different, if the mt might actually grab the bummer where the ats just slide along it.
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Unread 11-21-2008, 08:41 PM   #5
Kramer H
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the tread depth of any km2 is going to be more than any bfg at, it will be a tad bit taller, by anywhere from 5 to 12 32nds i would guess? i would almost bet money that the km2 will be a little taller tire, especially if the bfg is worn down.
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Unread 11-21-2008, 08:44 PM   #6
GraKee99
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That is why I said look at the actual manufacture size. And he didn't say his BFGs were worn down.
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Unread 11-21-2008, 08:53 PM   #7
WJJay
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i would estimate about 60% tread, now would spacers solve my problem or just lessen the rubbing somewhat or is it more a trial and error sort of thing--i'm hesitant to trim the rear of my wheel well but if thats the best option
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Unread 11-21-2008, 10:51 PM   #8
Kramer H
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i had to trim a little bit of my rear fender, not to bad, i would say if your rubbing with 60 percent tread on your bfg's, i would say that you should get the the 2657516's and do what it takes to make it fit, the only downside is that when your flexed out it could destroy a few things so a 245 might just be the way to go if you dont wanna trim any more or lift it any higher..

Right off bfg's website.

LT265/75R16/E 123/120Q RWL 33231 7 - 8 10.5 on 7.5 31.9 18 652 3415@80 3085@80 KM2 _____KM2_____

LT265/75R16/E 123Q BSW 71887 7 - 8 10.5 on 7.5 31.8 15 654 3415@80 BFG AT IF ITS A 10 PLY

LT265/75R16/D 120S RWL 61724 7 - 8 10.6 on 7.5 31.7 16 656 3042@65 IF ITS AN 8PLY

so the km2 is overall 31.9 inches tall with 18 32nds new tread depth
and the bfg ATs either 31.8 or 31.7 overall inches tall with 16 32nds new

if at 60percent, i would say your at about 10 32nds?

a NEW km2 is 18 32nds. quite a difference when you had to trim to fit the bfg AT's.

Hope this helps you out

GraKee99, sorry i didnt mean to sound like a d**k i wasnt trying to haha, just trying to help!

Last edited by Kramer H; 11-21-2008 at 11:08 PM..
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Unread 11-22-2008, 05:11 AM   #9
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Get 265/70/16's that is a better size for a 3'' lift, the 265/75/16's are best suited for a 4'' lift.
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Unread 11-22-2008, 05:17 AM   #10
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Whats the backspacing on the soft 8s? The edge of a mud terrain seams to have more tread sticking out. That might rub more. Reason I asked about backspacing is soft 8s are about the same cost as spacers.
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Unread 11-22-2008, 05:28 PM   #11
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i've found these sizes on tirerack 255/70 and 255/85 (besides the 245/75) -- no 265/70.
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Unread 11-22-2008, 06:51 PM   #12
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Quote:
Originally Posted by WJ04 View Post
Get 265/70/16's that is a better size for a 3'' lift, the 265/75/16's are best suited for a 4'' lift.
This is correct. If you wanted to move down a tire size, you dont want to change the first three numbers, just the second two. The way tire sizing (in metric) works is- the first three numbers (i.e. 265) are the section width of the tire, which would be, in this case, 265 millimeters, 26.5 centimeters, or approximately 10.43 inches. The second number will be the aspect ratio, which means by what percent of the width equals sidewall height. So, if the second number is 75, your sidewall height will be 75% of your section width. The third number you hopefully know. This is why, if you wanted a somewhat smaller tire, you would move to the 265/70/16. The reason it seems that the first number makes the tire bigger/smaller is because 75% (or whatever the aspect ratio may be) is going to be a smaller amount on a 245 than on a 265. This is why if you want some 32's, but would like to keep stock rims, I would suggest running a 235/85/16, which is just as tall as a 265/75/16, but not as wide. Sorry for the ramble, just trying to help out. Hope this clears up any questions.
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Unread 11-22-2008, 07:36 PM   #13
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Quote:
Originally Posted by wjjeepman34 View Post
This is correct. If you wanted to move down a tire size, you dont want to change the first three numbers, just the second two. The way tire sizing (in metric) works is- the first three numbers (i.e. 265) are the section width of the tire, which would be, in this case, 265 millimeters, 26.5 centimeters, or approximately 10.43 inches. The second number will be the aspect ratio, which means by what percent of the width equals sidewall height. So, if the second number is 75, your sidewall height will be 75% of your section width. The third number you hopefully know. This is why, if you wanted a somewhat smaller tire, you would move to the 265/70/16. The reason it seems that the first number makes the tire bigger/smaller is because 75% (or whatever the aspect ratio may be) is going to be a smaller amount on a 245 than on a 265. This is why if you want some 32's, but would like to keep stock rims, I would suggest running a 235/85/16, which is just as tall as a 265/75/16, but not as wide. Sorry for the ramble, just trying to help out. Hope this clears up any questions.

this is very true, i just hate how skinny a 235/85/16 is and i havnt seen them in anything but a 10ply? unless its something like a tsl or something? (trying to learn a little more then i know, sorry for the question) anyhow, dont but spacers, i dont actually belive that the soft 8 is only like 30 more a wheel than a spacer, and you have something that is fit over the hub like a wheel is supposed to, not centered by the lug so the lugs carry ALL the weight.. just my oppinion though, there are tons of guys on here than know more about this than i do.
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Unread 06-11-2010, 08:56 AM   #14
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i will receive shipment for my 245/75/R17 BFG Mud Terrain KM2 tires and am planning to mount them to stock rims....as I progress through the project I will note what I've had to do....the goal is to not use spacers if I can get away with it....I also dont like the idea of cutting the bolt if I don't have to....

however, this is my daily driver, so i'm trying to eliminate ALL rub if possible with minimal cost and modification...

and HEY Kramer!!!
WHAT"S WRONG WITH 245s!!?!



oh yeah, i've got the ome 2" hd lift installed...that's kind of worth mentioning...
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Unread 06-11-2010, 09:08 AM   #15
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I had 265/70 R17's in both BFG KO's and GY MT/R's and 255/75/R17 in both GY GSA's and BFG Mud Terrains and in both cases I moved from AT to Mud/Rock tires in those sizes and in both cases there was a small amount of rubbing on the latter that needed to be addressed that wasnt with the AT's leading me to think the lugs on them are taller then the AT's. The difference was extrememly minimal and with smart trimming additional cutting will be unnoticable. Trim smart not excessive and you will have better results. you can barely tell I trimmed mine..
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