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10.5 or 12.5

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Old 05-12-2009, 06:56 PM
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10.5 or 12.5

so i have 32/1150/15 on my ride currently. i have been wanting to go up to a 33 and was debating on how wide to go. what do you gain from a wider tire or a thinner tire.
Old 05-12-2009, 10:16 PM
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THIS IS NOT OFFROAD TECH.


Old 05-13-2009, 01:32 AM
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ok, so where do i ask questions about offroad tires
Old 05-13-2009, 05:52 AM
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if i remember correctly theres a section for tires. lol.
what r u goin for? looks?
Old 05-13-2009, 06:18 AM
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10.5 ftw
Old 05-13-2009, 06:22 AM
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personally on my rig once i get a lift and backspaced rims, i plan on using 33x12.50 tires.
Old 05-13-2009, 07:08 AM
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after running the 12.5s for so long, i wish i could have ran a 10.5...the wider tires are a lot more wear and tear on our very weak IFS parts. They dont rub as much and will get you just as far down the trail.

My front end is shot to hell because of the wider tires and it really sucks having to constantly replace all the parts that are up there.

Last edited by 881stGenRunner; 05-13-2009 at 07:15 AM.
Old 05-13-2009, 07:14 AM
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I would run the 10.5's, it was already said that there is way less wear and tear, better turning and they look good.
Old 05-13-2009, 07:20 AM
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Its not going to give you better turning unless the 12.50s are rubbing and is what is limiting the steering in the first place.

I ran 12.50's since my truck hasn't been stock. I never had any problems on ifs with that size.
Old 05-13-2009, 07:23 AM
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Originally Posted by 904_runner
Its not going to give you better turning unless the 12.50s are rubbing and is what is limiting the steering in the first place.

I ran 12.50's since my truck hasn't been stock. I never had any problems on ifs with that size.
Ha, you just werent on that size for very long before you upgraded to a SA!

I've been on 33x12.50s since December 2006. All my steering parts are TRASHED!! ahah
Old 05-13-2009, 07:32 AM
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no i didn't.

i did run it pretty hard with a 4" ifs lift though/and that size and hadn't had problems in the year i ran it. I also know quite a few people who haven't had problems, but i have heard a lot of people say they dislike the "wider" tires for the fact they will mess up ifs.
Old 05-13-2009, 07:32 AM
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depends what you're doing with your truck. if you're rock crawling, dirt trails, or daily driving, go with the 10.5s. if you're mudding, go with the 12.5s. i roll 33x10.5 BFG A/Ts cuz its on pavement 90% of the time.
Old 05-13-2009, 08:20 AM
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Check this out http://www.expeditionswest.com/resea...tion_rev1.html

It's probably one of the most empirical, scientific articles I've ever read about tires.
Old 05-13-2009, 09:04 AM
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Originally Posted by brunner628
ok, so where do i ask questions about offroad tires
The Tires/Wheels section.


But seriously.

10.5's ftw..

The heavier weight and more rolling resistance of 12.5's will kill you gas mileage more than just jumping up to 33's.


31 10.5's Get me there.
255/85's soon.



Old 05-13-2009, 10:29 AM
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skip the 33's and go with 39.5"s.. You going to want them anyways!
Old 05-13-2009, 10:35 AM
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/me throws a garbage can at mike.


Old 05-13-2009, 02:14 PM
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thanks for all the input. i would like 39.5's. thanks for all the input even in the wrong section (sorry) i was thinking about the 10.5's being the hot ticket and with all the input i have made my mind up. i spend a good bit on the street that was the reason for the post. thanks again and i will watch were i post in the future.
Old 05-22-2009, 12:19 AM
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My buddy just got BFG 33x9.5r15s, they gripped really well on mud, gravel, dirt, and rock this past weekend. I'll see if I can find a video.

Just want to add that if you are driving in snow or mud, the narrower tire cuts a narrower path and thus moves through easier. If you are sinking into the mud or snow, air down a bit. IMO narrow tires are more versitile and way more suited to light, low-power trucks used for a variety of tasks.
Old 05-27-2009, 04:07 PM
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Originally Posted by Matt16
My buddy just got BFG 33x9.5r15s, they gripped really well on mud, gravel, dirt, and rock this past weekend. I'll see if I can find a video.

Just want to add that if you are driving in snow or mud, the narrower tire cuts a narrower path and thus moves through easier. If you are sinking into the mud or snow, air down a bit.
with a 9.5" tire, you should *theoretically* be able to stop better as well due to smaller footprint contacting the ground - according to the article on tires that's floating around the web.

personally, i'm in the market for tires and am planning on going with a 33x10.5x15. reason for this is 9.5" tires are less common, therefore would have higher chance of random tire dealer not having a replacement in an emergency situation. they also look a little funky being so skinny.

a 12.5 tire would be nice, but for me the extra weight + wider footprint = quicker wear. i'm looking to get as much treadlife I can safely use because proper+safe tires are expensive!

right now i'm lookin' at the BFG KM2 since my truck is not a DD anymore.

Last edited by highonpottery; 05-27-2009 at 04:18 PM.
Old 05-27-2009, 07:15 PM
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Do a check for 33"x10.5"x15" on www.tirerack.com and see how many results come up.

It's sad that everyone with a lifted domestic demands those stupid 12.5s.


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