15/16" wheels - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 15 Old 07-13-2010, 05:27 AM Thread Starter
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Question 15/16" wheels

can you run 15 or 16" wheels on the jk with a lift? am i too old school, seems like that would make a lot of sense! tires $20 to 50 bucks cheaper, wheels are cheaper and i would think you can get a better off road ride with more rubber between your rim and the ground! any thoughts or experience?
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post #2 of 15 Old 07-13-2010, 06:55 AM
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The general concensus is the your wheel should be ~1/2 the diameter of your tire. So, if you're gonna run 33's, then a 16" wheel would be fine (even a 15" wheel)... if you're gonna run 35's, then a 17" wheel is just fine... with 37's a 17" wheel is still fine, but an 18 would be ok... once you move up to 40's a 20" wheel is (sort of) accepted, but not mandatory -- a 17" wheel in a 40" tire is just fine... with 42's a 20" wheel would be acceptable and I'm not sure I'd want to run any smaller than 17" in that tire.

Once you get too much sidewall, it becomes more harm than good. A moderate dose of wheel inside the tire is fine.

Again, a 1:1 (or thereabouts) ratio of wheel:tire is just about right.


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post #3 of 15 Old 07-13-2010, 07:16 AM
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I have 16's with 33's on mine with a 2.5 lift. Pic in my garage or my profile.

If you want 15's, you may have to do some caliper grinding. Some fit, some don't.
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post #4 of 15 Old 07-13-2010, 07:41 AM
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The general consensus on 15 inch rims is 3.75 backspacing. I was going to go 15's, but I picked up 5 16 inch soft 8's for 75 bucks on craigs list so it made my decision a lot easier.
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post #5 of 15 Old 07-13-2010, 07:53 AM
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I'm running 15x8 Soft 8s with 4" BS. Bought em from Jegs for $185 shipped.

Planman ran 15s/37s for a while.

Another member just ordered 15" Black Rock 909Ds and will have pics soon.

Do some searching. Mine fit without any issues whatsoever. You can't run stacked tape weights though and they do require quite a bit of weight.

For what it's worth I paid $185 for my wheels and $195 per tire for 35x12.5R15 Goodyear MT/R w/Kevlar. Search my username and you'll see pictures.

I have no regrets. It doesn't handle weird, it doesn't grind, it looks awesome, and people think I have 37s because the damn MTRs are so big.

Let me know if you have questions. Search my name as well as Planman for TONS of info.

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post #6 of 15 Old 07-13-2010, 08:37 AM
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Quote:
Originally Posted by jeeperjkj View Post
The general concensus is the your wheel should be ~1/2 the diameter of your tire.
I've never heard anyone state this before. The primary reason folks run larger than 15" wheels on their JK's is to avoid rubbing issues on the brake calipers.... more about that later.

Tires with R15 are significantly cheaper, and typically have a lower load range which makes the tires less stiff and more capable while aired down. The extra tire bulge helps protect your wheels as well.

15" wheels are fine up to a 37" tire.... beyond that point it starts to look a bit silly and you'll probably want the extra sidewall strength of a higher load range tire.

As for the rubbing issue with 15" Wheels check THIS post out.

I'll be the first person to point out that my experience is limited, so I'll let the more experienced members yay or nay my post.

2008 JK X 2dr. Std. Blk
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post #7 of 15 Old 07-13-2010, 08:45 AM
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Quote:
Originally Posted by BryGuy View Post
I've never heard anyone state this before. The primary reason folks run larger than 15" wheels on their JK's is to avoid rubbing issues on the brake calipers.... more about that later.

Tires with R15 are significantly cheaper, and typically have a lower load range which makes the tires less stiff and more capable while aired down. The extra tire bulge helps protect your wheels as well.

15" wheels are fine up to a 37" tire.... beyond that point it starts to look a bit silly and you'll probably want the extra sidewall strength of a higher load range tire.

As for the rubbing issue with 15" Wheels check THIS post out.

I'll be the first person to point out that my experience is limited, so I'll let the more experienced members yay or nay my post.
i pretty much agree with what he said

I ran 15's on my JK with 33's, but i ran 32's, 33's, 34's, 35's, 36's, and 37's on 15's on my TJ with no problems.

it's all about the offset getting 15" rims to fit a JK, and i'd plan on steel only, but i have heard about an aluminum 15" that fits as well.
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post #8 of 15 Old 07-13-2010, 04:55 PM
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I run the Black Rock 909s 15" just fine, no rub or grinding.

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post #9 of 15 Old 07-21-2010, 07:00 PM
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I have a friend that just bought an 08 Rubi with 31" tires. He kept the 33X12.5R15 KM2s that he had on his 2000 TJ. He was told that he couldn't run 15" wheels on his 08. I refered him to this thread where he found that the Pro Comp 8179 15X10 wheel w/3.62" BS was working with no problems. He had Discount Tire order them and they arrived today and the don't clear the calipers. They told him that they didn't think 16" wheels would work. Why do they work on others with no issues and not his 08?
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post #10 of 15 Old 07-21-2010, 08:08 PM
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The 'tire size no more than double you wheel size' rule has been around ages.

The reason being having to much sidewall can equal more sidewall roll on the street, which can be dangerous. This was is a lot more prevalent with bias tires than belted though.


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post #11 of 15 Old 07-21-2010, 08:11 PM
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Quote:
Originally Posted by Venturer View Post
I have a friend that just bought an 08 Rubi with 31" tires. He kept the 33X12.5R15 KM2s that he had on his 2000 TJ. He was told that he couldn't run 15" wheels on his 08. I refered him to this thread where he found that the Pro Comp 8179 15X10 wheel w/3.62" BS was working with no problems. He had Discount Tire order them and they arrived today and the don't clear the calipers. They told him that they didn't think 16" wheels would work. Why do they work on others with no issues and not his 08?
The ProComp 8179's are an Alloy wheel. As far as I know only 15" Steelies will work.


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post #12 of 15 Old 07-21-2010, 09:13 PM
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Quote:
Originally Posted by Venturer View Post
I have a friend that just bought an 08 Rubi with 31" tires. He kept the 33X12.5R15 KM2s that he had on his 2000 TJ. He was told that he couldn't run 15" wheels on his 08. I refered him to this thread where he found that the Pro Comp 8179 15X10 wheel w/3.62" BS was working with no problems. He had Discount Tire order them and they arrived today and the don't clear the calipers. They told him that they didn't think 16" wheels would work. Why do they work on others with no issues and not his 08?
Buy steel wheels or Black Rock 909D if you want to run 15" wheels with little chance of complications.

Read what I said above...$185 FOR FOUR FRIGGIN WHEELS!

08 Unlimited - Flame Red "Lucy"
2.5" RC Coils & 33" KM2 on stockers

08 JK - Stone White "The Goat"
2.5" BB, 35" MTRs on 15s, Rubi sliders - just the beginning
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post #13 of 15 Old 07-21-2010, 09:16 PM
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According to the chart BryGuy referred to, the 8179s are working for the guys on that chart both 8" & 10". We're confused!
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post #14 of 15 Old 07-21-2010, 10:10 PM
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Discount tire 15x8 MB72 -19mm offset




These clear the calipers no problema.......................................... .....


Goodyear 35 12.50 15 MTR Kevlar

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35 12.50 15 MTR Goodyear Kevlars

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post #15 of 15 Old 07-22-2010, 03:22 AM
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I've been thinking of down sizing to 15" wheels, thanks for all the info. Birk I hope you find what your looking for, thanks again everyone.
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