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post #1 of 12 Old 02-08-2014, 06:07 AM Thread Starter
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38s or 37s

7" Icon lift. Im currently running a 18x9 with a -12 offset.

will a 38 fit. All the tires ive been checking out in 37s for 18inch wheels are D rated and the 38 will hold more weight.
also Has anyone ever ran a 38/13.50.

Trail Grapplers were E-rated in 37/12.50. I think thats the only one i saw that was.
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post #2 of 12 Old 02-08-2014, 10:52 AM Thread Starter
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Pretty quiet forum lately on tire suggestions
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post #3 of 12 Old 02-08-2014, 04:18 PM
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Not many people are familiar with what it takes to run a tire that large. Also, there's a lot of info missing from your post.

What year truck?

What tire size are you running now?

The easiest way to tell if a tire will fit is to go outside and measure steering wheel lock on both sides and see how much clearance you have. Look at the bumper valance, bumper, rear wheel liner, control arms or leaf springs...



I've never ran a 38x13.50 but have ran 38x15.50.

11 F250 CCSB King Ranch

Gearhead tunes, No Limit Stage 2, No Limit Block Off, 5" exhaust, CTS

2.5" Carli Commuter, 37x12.5R20 Toyo RTs, Stock wheels


01 Ex 7.3l Limited

Swamps tunes, 6637, 4" exhaust, 6.0 trans cooler, Hellwig rear swaybar, CTS

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post #4 of 12 Old 02-08-2014, 04:20 PM Thread Starter
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Yah you are right...
2009 F250. CCSB 4x4.

35/12.50/18 Mud grapplers are whats on it now....Looks like there is a pile of room. They look itty bitty.
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post #5 of 12 Old 02-08-2014, 05:07 PM
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37's look like it will fit. I went on Nitto's site and they have a load ratting of 3970lb's which is really good for a tire that size. Trail's are also one of the best off-road tire on the market.

For 38's your gonna have to go up to 20" rims and those tires are only D rated.

If you still want the muds then I suggest going down a rim size as they have them 37x13.50R17 with a 4300lb E rating.

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post #6 of 12 Old 02-08-2014, 05:09 PM
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Ha... those do look tiny. You'll clear a 37 no problem with that size lift and you SHOULD clear a 38x13.5 as well with some minor trimming. Your best bet is to measure like I said or call trucktoyz or Icon to see if they've ran a 38 under the 7" kit.

11 F250 CCSB King Ranch

Gearhead tunes, No Limit Stage 2, No Limit Block Off, 5" exhaust, CTS

2.5" Carli Commuter, 37x12.5R20 Toyo RTs, Stock wheels


01 Ex 7.3l Limited

Swamps tunes, 6637, 4" exhaust, 6.0 trans cooler, Hellwig rear swaybar, CTS

06 headlights
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post #7 of 12 Old 02-08-2014, 06:27 PM Thread Starter
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Forgot to add my wheels are only 9 inches wide and -12 offset. I think i could clear either one. Id rather have functionality over having to worry about trimming or when i go through a hole ripping my fender flares off.

I also was looking at the load ratings as well. the 37 1250 Trail grappler seems to be the only Erated i saw. The rest were D. The weight ratings on the 38s were comparable to the E rated Trails though. Pretty sure im just going to keep these wheels
Tires i have now are 8/32nds so they still have some life left in them........Cant run on em though, it looks stupid.
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post #8 of 12 Old 02-15-2014, 04:46 PM Thread Starter
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Heres the setup im thinking of going with. Just nervous about fitting a 38 on this ICON 7" lift. Wish someone has done this before......Or i can get them with the 37" Toyos for 60 bucks less.....Or 37/12.50 Mud grapplers for 2645.00

heres the link 20x10 Black Milled Helo HE791 Maxx 8x170 12 Wheels Open Country MT 38x13 5x20 | eBay
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post #9 of 12 Old 02-15-2014, 06:21 PM
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Quote:
Originally Posted by Big_Smokey View Post
Heres the setup im thinking of going with. Just nervous about fitting a 38 on this ICON 7" lift. Wish someone has done this before......Or i can get them with the 37" Toyos for 60 bucks less.....Or 37/12.50 Mud grapplers for 2645.00

heres the link 20x10 Black Milled Helo HE791 Maxx 8x170 12 Wheels Open Country MT 38x13 5x20 | eBay
You're going to rub with 38's, so just go with the 37's. I ran a 9" lift with 38x15.50 and had to trim my valance and fenderwell pretty significantly. A 38x13.50 would've rubbed as well

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post #10 of 12 Old 02-15-2014, 06:29 PM
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I know we have different trucks, but I am running an 8 1/2" on my '03 with 38s and needed to trim the front valance due to rubbing. Chances are, you will be trimming some plastic off the front if you run 38s.

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