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Old 05-22-2012, 01:45 PM   #1
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285/75/17

How do these tires look with 2.5 inch lift and stock 17 wheels?

Isn't a 285/75/17 and 34x11.2 inch tire?

Well they fit or do I need to up to 4.75 offset?

Is 4.75 offset outside the stock fender flares?

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Old 05-22-2012, 02:15 PM   #2
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You can almost fit 285's on stock wheels so yes with 4.75bs. Do you need that much, no.285's barely rub on stock 6.25bs. Those running stock wheels with 1.5" spacers are actually running 4.75 (6.25" stock minus 1.5" wheel spacer)

Here is my old 285's with 4.75 bs pic




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Old 05-22-2012, 02:22 PM   #3
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Quote:
Originally Posted by BossierCity_WranglerJK View Post
How do these tires look with 2.5 inch lift and stock 17 wheels?

Isn't a 285/75/17 and 34x11.2 inch tire?

Well they fit or do I need to up to 4.75 offset?

Is 4.75 offset outside the stock fender flares?
Here are pics of 2.5" w/285/75/17 setting next to stock. 285/75/17 is closer to a 31x11.2. This set up is with a -12mm offset. Hope this helps
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Old 05-22-2012, 02:38 PM   #4
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285/75/17 is about 33.8" ~ 34"

? (((285*.75)/25.4)*2)+17

or:

http://www.tirerack.com/tires/tires....rain+T%2FA+KM2
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Old 05-22-2012, 04:59 PM   #5
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Sorry, 3jk is correct. I was thinking a 275/70/17 @ 33.1 and I had a typo
I was trying to remember the offset used.
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Old 05-22-2012, 05:41 PM   #6
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I am running 285/70R17 on my stock rims. No spacers and no rubbing.
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Old 05-22-2012, 07:45 PM   #7
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Quote:
Originally Posted by BossierCity_WranglerJK View Post
How do these tires look with 2.5 inch lift and stock 17 wheels?

Isn't a 285/75/17 and 34x11.2 inch tire?

Well they fit or do I need to up to 4.75 offset?

Is 4.75 offset outside the stock fender flares?
Well I did alot of research before going with a 285/70-17 BFG mud terrain T/A MK2's and Mickey Thompson classic 17x9, 4.5 backspace, 12mm offsets.

No lift, no nothing. Don't listen to folks that want to sell you more than you need.

Wheel Link:

Mickey Thompson Performance Tires & Wheels

Tire Link:
BFGoodrich Mud Terrain T/A KM2 tires - Reviews, ratings and specs in the Fort Worth Area - Discount Tire/America's Tire

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Old 05-22-2012, 08:16 PM   #8
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Quote:
Originally Posted by 50 Something View Post
Well I did alot of research before going with a 285/70-17 BFG mud terrain T/A MK2's and Mickey Thompson classic 17x9, 4.5 backspace, 12mm offsets.

No lift, no nothing. Don't listen to folks that want to sell you more than you need.

Wheel Link:

Mickey Thompson Performance Tires & Wheels

Tire Link:
BFGoodrich Mud Terrain T/A KM2 tires - Reviews, ratings and specs in the Fort Worth Area - Discount Tire/America's Tire

50 Something
The 285/70/17 that you have is a 32.8" x 11.2" tire. That size tire is pretty much considered the limit on stock suspension. The 285/75/17 that the OP is wanting to run is a 33.9" x 11.2" tire. Not going to be able to run a tire of that size offroad without a lift. Fender munching would commence at the first real flexy area.
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Old 05-22-2012, 08:33 PM   #9
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285/75/17 BFG KM2 - Teraflex 2.5" Coil 1.5" Spidertax

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Old 05-22-2012, 08:42 PM   #10
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Originally Posted by KG1 View Post
KG1,

How do you like those tires on the road? I know they are good off road. How much different do they ride compared to the stock 32" KM's on the Rubicon?

Thinking of getting a set of in 285/75/17 or 305/70/17 (both 34")
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Old 05-22-2012, 08:48 PM   #11
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I have been happy with them on the road. It is a daily driver and I know some say too stiff but the ride is good. Everyone who has driven it or as a passenger can't believe how good it is. A friend has the same Jeep with the 32s and says it's as good. I think the size has a good balance for looks and use.
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Old 05-22-2012, 11:41 PM   #12
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I have a 2.5 inch lift. So the tire is roughly almost a 34 inch tire.

I'm still a little confused on rather I can run this on my stock 17s or do I have to buy wheel spacers or aftermarket wheels?
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Old 05-23-2012, 12:53 AM   #13
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spacers or other wheels are highly recommended
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Old 05-23-2012, 06:14 AM   #14
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Quote:
Originally Posted by 4fit View Post
The 285/70/17 that you have is a 32.8" x 11.2" tire. That size tire is pretty much considered the limit on stock suspension. The 285/75/17 that the OP is wanting to run is a 33.9" x 11.2" tire. Not going to be able to run a tire of that size offroad without a lift. Fender munching would commence at the first real flexy area.
Jeff,

You are correct. I was just trying to point out the fact that the Jeep dealer, and Discount Tire said the biggest you can run stock is 255/'s. Not to mention some of the 4WD stores said I needed a lift kit to run the 285/'s.

Also, I think the 285/70/17 look more aggressive than the 285/75/17's since they look fatter due to the smaller overall height, but the same width.

I'm just a Newby on this site so I'm learning every day, but I figure why spend extra cash for a lift just to get 1/2 of an inch of tire. Over all is 1" but you have to cut that in half for body clearance.

I'm a service and sales manager for a Industrial Tire company, so we do not sell OTR (Over the Road) tires. Only NHS (Non Highway Service) Tires. That is why I had to do all of the research, before spending over $2K on tires and wheels.

Thanks,

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Old 08-13-2012, 12:23 PM   #15
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Originally Posted by rics1997 View Post
You can almost fit 285's on stock wheels so yes with 4.75bs. Do you need that much, no.285's barely rub on stock 6.25bs. Those running stock wheels with 1.5" spacers are actually running 4.75 (6.25" stock minus 1.5" wheel spacer)

Here is my old 285's with 4.75 bs pic



Are these Stock wheels? I'm headed to Germany and need a set up just under 35" but completely tucked under the factory flares....
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Old 08-13-2012, 01:33 PM   #16
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Two things I'd point out:

A) The stock BS is 6.0", not 6.25". The offset is stamped into the back of the wheels in millimeters and if you do the math it comes out to 6.0". Also, by measuring I got 5.75" on the stock 16" wheels. So, these things don't have quite as much backspacing as what's passed around the forums.

B) If you buy a 285/70-17 Treadwright tire, it will be the same size as a 285/75-17 "new" tire. So if the size is what matters most to you, you might save some cash by looking at the Treadwrights....like maybe $500 savings actually. The retreading process adds height to the tires.
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Old 08-13-2012, 02:33 PM   #17
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Two things I'd point out:

A) The stock BS is 6.0", not 6.25". The offset is stamped into the back of the wheels in millimeters and if you do the math it comes out to 6.0". Also, by measuring I got 5.75" on the stock 16" wheels. So, these things don't have quite as much backspacing as what's passed around the forums.

B) If you buy a 285/70-17 Treadwright tire, it will be the same size as a 285/75-17 "new" tire. So if the size is what matters most to you, you might save some cash by looking at the Treadwrights....like maybe $500 savings actually. The retreading process adds height to the tires.
Is the 16" BS and the 17" BS the same?

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