New wheels and tires and sticking out past the fenders - JeepForum.com
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post #1 of 16 Old 10-11-2015, 01:25 PM Thread Starter
drth20
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New wheels and tires and sticking out past the fenders

I've been googling my *** off for the past few hours and I can't find exactly what I'm looking for. Hopefully someone here can help.

I'm going through a battle between being mature and logic and sticking with 33's, or doing the opposite and getting 35's. I'm running 4.10's with a manual and I'm very happy with the current gas mileage my wife is reporting back to me (I'm still overseas). My biggest fear of going to 35's would be tanking the fuel economy. I'm less worried about the power loss of a larger tire.

I'm currently running 33x10.5x15 KM2's on 15x8 w/ 3.75 BS and I'm not a fan of the "squatty" stance, my fault for not doing enough research before ordering them.



So I'm debating on a few things here. If I stay with 33's I'm going to get 285/75r16 KM2's on 16x8 wheels with 4.25" backspacing. I'll maintain my fuel economy and power from the 4.10's, and I know they'll get rid of the "squatty" look. Price will be around $1,600ish

-OR-

I go to 35's in which case there are two options:
1) 315x75x16 KM2's on 16x8 w 4.25" BS. I know I'll like the look but price is around $1,900ish
2) 35x12.5x15 KM2's on 15x8 Cragar Soft 8's w/ 4" BS $1,300ish

I'm leaning far closer to the 35's on 15's for the sheer cost savings but I'm worried about the stance. Does anyone have any pictures of the #2 set up and can definitively show me how far the tires will stick out of the fenders?

Looking forward to hearing back from you all.

KCCO!


'14 JK Sport, Lifted, mud-tires, stuff 'n' things.
'85 Jeep J20, "Dorothy" currently in rebuild.

Last edited by 1222; 10-11-2015 at 03:26 PM. Reason: DON'T BYPASS THE WORD CENSOR
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post #2 of 16 Old 10-11-2015, 05:21 PM
SLADE
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KM2s are short for their labeled height anyhow, so if you're stuck on a KM 2 then you might as well get a 35 since you allready have a 14 with 4.10s.

There are much better tires in sizes to balance the choice between 33s and 35s if your interested in getting off the KM 2 kick. If your allready planning on wheels, there is no reason not to consider some of the 18" sizes also.

You can make a responsible choice and still run a "35".

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post #3 of 16 Old 10-11-2015, 05:25 PM
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Since your overseas, I assume that your wife took the pictures for you?

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post #4 of 16 Old 10-11-2015, 05:42 PM
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Did you have gears put in? sports would have 3.73 at best, most are 3.21.

If you go with 35x12.5x15. Your Max Bs is 3.75. Better at 3.5. I run 3.75bs on my 15x8 and it is very tight near the tierods. i do run aftermarket tie rod as well that has larger tres. It is so close at 3.75 if they were 4"bs it would rub at the tre.

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post #5 of 16 Old 10-11-2015, 06:06 PM
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NM sig says 14 sport. Agreed it will have 3.73 at best but likely 3.21 with a manual. Unless of course the gears have already been swapped.

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post #6 of 16 Old 10-11-2015, 06:14 PM
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Quote:
Originally Posted by JTPhoto View Post
Unless this is a 2007 which would have 4.10 with a tow package. I didn't see what year the OP has here

His profile says 2014.....

I can only assume that the Jeep listed under his name in bold letters is the Jeep in question.

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post #7 of 16 Old 10-11-2015, 08:39 PM
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4.75 back spacing sticks out with 35's. The bigger tires do not bother me speed wise at all with 3.73. 4.10's should be perfect.
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post #8 of 16 Old 10-12-2015, 12:51 AM Thread Starter
drth20
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Here's the "Squatty" stance aforementioned that I don't like.



Quote:
Originally Posted by SLADE View Post
Since your overseas, I assume that your wife took the pictures for you?
yes, she did. She's been enjoying the Jeep, even relearned how to drive standard so it didn't sit all year. She's a keeper.

Quote:
Did you have gears put in? sports would have 3.73 at best, most are 3.21.
Yes I had new gears installed, Yukon 4.11's (4.10's) I came from 3.23's.

To explain my choice in tire:
I'm a creature of habit and have had good luck with the KM2's so far. I've looked at the Nitto's, Duratrac's, GY MT/R's and keep coming back to the KM2's for their overall quality, positive reviews and price. Based on my research and talking to owners, the Nitto's are heavy and a bit overpriced in my opinion, I've gotten feedback that the Duratrac's are great all around but can wear out pretty quickly due to the softer compound, I drove a wrangler with 35" MT/R's and it liked to wander on the highway. I've considered the Firestone Destination MT's as I had them on a Cherokee when I was in High School but they were very loud on the road. The KM2's have done me well so far.

Sorry 222Doc
Quote:
If you go with 35x12.5x15. Your Max Bs is 3.75
Max BS with a 15x8 wheel is 4". Cragar Soft 8's as I mentioned. I might have to grind the front calipers down a little to help them fit but that's a non-issue.

Any pictures of how far a 35x12.5x15 tire will stick out of the fenders with 4" backspacing on an 8" rim?

'14 JK Sport, Lifted, mud-tires, stuff 'n' things.
'85 Jeep J20, "Dorothy" currently in rebuild.
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post #9 of 16 Old 10-13-2015, 01:42 AM Thread Starter
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So many views and no more responses?

'14 JK Sport, Lifted, mud-tires, stuff 'n' things.
'85 Jeep J20, "Dorothy" currently in rebuild.
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post #10 of 16 Old 10-13-2015, 06:52 AM
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Going with a stuby bumper will really open up your options as far as backspacing. I run 35's on 20x12's with a 4.75 back spacing, with no issues. I do have higher clearance fenders but doing a fender trim would equal out.

I also have 3.73's and I would think 4.10's would be perfect for 35's I'll eventually get up to some 4.56's when i re gear.
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post #11 of 16 Old 10-13-2015, 07:06 AM
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Quote:
Originally Posted by drth20 View Post
Here's the "Squatty" stance aforementioned that I don't like.

yes, she did. She's been enjoying the Jeep, even relearned how to drive standard so it didn't sit all year. She's a keeper.

Yes I had new gears installed, Yukon 4.11's (4.10's) I came from 3.23's.

To explain my choice in tire:
I'm a creature of habit and have had good luck with the KM2's so far. I've looked at the Nitto's, Duratrac's, GY MT/R's and keep coming back to the KM2's for their overall quality, positive reviews and price. Based on my research and talking to owners, the Nitto's are heavy and a bit overpriced in my opinion, I've gotten feedback that the Duratrac's are great all around but can wear out pretty quickly due to the softer compound, I drove a wrangler with 35" MT/R's and it liked to wander on the highway. I've considered the Firestone Destination MT's as I had them on a Cherokee when I was in High School but they were very loud on the road. The KM2's have done me well so far.

Sorry 222Doc
Max BS with a 15x8 wheel is 4". Cragar Soft 8's as I mentioned. I might have to grind the front calipers down a little to help them fit but that's a non-issue.

Any pictures of how far a 35x12.5x15 tire will stick out of the fenders with 4" backspacing on an 8" rim?


If you go with an alloy wheels, chances are you won't have to grind the calipers at all. I have 15x8 alloys and no grinding whatsoever.
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post #12 of 16 Old 10-13-2015, 08:33 AM Thread Starter
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Quote:
Originally Posted by SLADE View Post
KM2s are short for their labeled height anyhow, so if you're stuck on a KM 2 then you might as well get a 35 since you allready have a 14 with 4.10s.

There are much better tires in sizes to balance the choice between 33s and 35s if your interested in getting off the KM 2 kick. If your allready planning on wheels, there is no reason not to consider some of the 18" sizes also.

You can make a responsible choice and still run a "35".
I've been a big fan of the KM2s and they've treated me well so far. What tires have treated you well? I asked for a quote from a 4wheelparts.com rep for a set of 315/75r16 Mickey Thompson MTZ's and their Deegan 38's in the same size. At full price they're not too bad and people seem to really like them. Plus, going to a 16x8" rim I can get the 4.25" BS which will keep me in the fenders.

If I stick with a 15x8" wheel I'm getting the Cragar Soft 8's for the 4" BS. I'm doing all of this to get away from the "squatty" look that the 3.75 BS currently gives me and 4" of BS on an 8" wide wheel is the least about of BS I will go. My concern here isn't with gearing or rubbing issues but how far out of the fenders my tires will run.

I appreciate the responses everyone but even with all the responses no one has really even eluted to my original post's question of how far out of the fenders will a 35x12.5x15 tire on a 15x8 wheel with 4" backspacing stick out?

'14 JK Sport, Lifted, mud-tires, stuff 'n' things.
'85 Jeep J20, "Dorothy" currently in rebuild.
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post #13 of 16 Old 10-13-2015, 08:48 AM
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you have a 11.25" tire now so you'll gain 1.25" going to a 12.5 wide so half of 1.25 is .62 so about 5/8" for the tire and the .25 gain in backspacing haved is .125 so over all 3/4th" difference, if my maths all right and tires are to spec.
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post #14 of 16 Old 10-13-2015, 06:43 PM
SLADE
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Quote:
Originally Posted by drth20 View Post
I've been a big fan of the KM2s and they've treated me well so far. What tires have treated you well?


I'm not stuck on a certain tire. Right now (on or for different 4x4s), I have Fierce Attitude, Kelly TSR, Nitto Trail Grappler, Goodyear MTR/k, Super Swamper TSL, and Pit Bull Rocker bias. That's just a sample of the many different tires Ive put miles on.

There are a lot of different tires to choose from for a DD, you just have to pick one that fit your needs the best. Could be use, size, load range, price, looks, fitment or what ever your looking for. There is no one perfect tire for everything. I can tell you something I like and something I don't like about every one of them.

Right now, your in a tossup on tire size BUT there are many sizes in between a simple 33x12.50 and a 35x12.50. Look at some of the other sizes that may be a good compromise to get the best of both worlds and see what tires are available in those sizes.

BFG KM2s is one tire I was very disappointed in. I sold them at half tread and bought a new set of tires. My wife even encouraged it because they made her feel uncomfortable in the passenger seat. They lack sipping for wet, snowy, and icy conditions along with the solid horizontal lugs lacking lateral traction they where miserable at times. They made a challenge out of spots that previous and current tires walk across. The disappointment was probably multiplied by the over whelming amount over rated reviews from diehard BFG lovers. Not doubting that there are happy BFG owners but they are not what they are made out to be.

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post #15 of 16 Old 10-14-2015, 01:39 AM Thread Starter
drth20
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I hear ya, different strokes for different folks. I'm a terrible bandwagon rider when it comes to brands, I hardly stick to one or the other. My wife and I took a road trip from NH to the Outer Banks to Nashville and back on the KM2's and they were smooth the whole way, so I have some favoritism to the KM2's. About 10 years ago I ran a set of Firestone Destination M/T's on my Cherokee and I was skeptical at first about the brand they treated me very well. They were loud on the road they were excellent off-road and lasted a fairly long time.

I've sense been looking at Mickey Thompson's line up and I'm leaning toward their Deegan 38's in a 315/75r16. New tire, and I can't find any longevity reviews but so far people seem to like them on and off-road. At around $1,200 for a set of 5, they won't break the bank either.

'14 JK Sport, Lifted, mud-tires, stuff 'n' things.
'85 Jeep J20, "Dorothy" currently in rebuild.
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