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Discussion Starter #1
Hi. I just got a new 2017 JKU Sport S and the tires are killing me. I traded in a TJ with BFG KM2s so I'm missing the more aggressive look/feel.

My question: will Maxxis Bighorn MT tires sized 285/75r18 fit on my stock jeep. I don't want a lift and I don't go off road (unless you count the terrible roads in New Orleans).

The ones I'm looking at are mounted and balanced on procomp 18x9 5034 rims with 4.5 back spacing.

I've read so many threads/posts regarding the biggest size tire for stock jeeps but now I'm confused since my jeep won't be going off road. Will that size work?

Thanks for your help!
 

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285/75-18 are taller than many 35's so my opinion is you will need some lift or get flat fenders it you will have issues
 

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285/70R17 Nitro Grabbers on 17" rims with 4.5 back space.
No Lift
3.21 gears
Automatic Transmission
No rubbing
No problems with 3.21 gears on the flat lands of South New Jersey
Getting about 19 to 20 mpg
I did recalibrate the speedometer
I don't drive off road
4 tires, rims, balance, mount, TPS and shipping to the house, about $1,500
 

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285/70-17 are not even close to as big as 285/75-18.
 

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If you go off road you will rub your fenders badly even when not fully flexed.
 

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285/70R17 Nitro Grabbers on 17" rims with 4.5 back space.
No Lift
3.21 gears
Automatic Transmission
No rubbing
No problems with 3.21 gears on the flat lands of South New Jersey
Getting about 19 to 20 mpg
I did recalibrate the speedometer
I don't drive off road
4 tires, rims, balance, mount, TPS and shipping to the house, about $1,500
but this photo is off the road?
 

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That bighorn is bigger than most 35" tires as it measures out to 35.1". Per their description it should fit your stock rim. Will probably need spacers, flat fenders and or a lift. Heres the copy and paste description:

The 285/75R18 Maxxis Bighorn has a diameter of 35.1", a width of 11.5", mounts on a 18" rim and has 592 revolutions per mile. It, has a max load of 4080 lbs, has a maximum air pressure of 80 psi, a tread depth of 19/32" and should be used on a rim width of 7.5-9.5".
 

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Sorry missed the oart about your 18x9's with 4.5 backspacing. That will work, but you'll still need to lift or flat fenders
 

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Discussion Starter #13
Sorry missed the oart about your 18x9's with 4.5 backspacing. That will work, but you'll still need to lift or flat fenders
Ok ive kinda given up on the idea of those 35s because of the rubbing.

I'm on Sport S tires right now: 255/75/17...I'm trying to decide if I should just buy a new set of mud tires 285/70/17 mt or get some rubicon takeoffs to help with the overall look. The rubi takeoffs are $600. Or I'd likely have to get some cheaper new mud tires.

Opinions please???
 

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You stated in your opening post that you liked the KM2s that you had on your TJ. You have a couple of choices that will fit without modifications and will fit your current rims - LT255/75R17 BFG Mud Terrain KM or LT255/80R17 BFG Mud Terrain KM2.

I am not sure what the difference is between the KM and KM2 but the LT255/75R17 is apparently not available in the KM2 and the LT255/80R17 is apparently not available in the KM.

The LT 255/75R17 tire is the same size tire you now have but instead of the SRA glorified street tread, it is the aggressive tire that is on the Rubicon, Recon and Chief and a few others. It retails for $241 and is a 32" tall tire (actually a few hundreds of an inch over 32. The LT255/80R17 tire retails for $273 and is according to BFG 33.3" tall which would be about 6/10 of an inch closer to fenders, but is a 10" tire so if it rubs it would not be nearly as bad as the LT285/75R18 tire you are looking at.

In addition, you could keep your stock rims until you decide to replace them. Also keep in mind than any 18" class tire will be more expensive than the same class tire in 18". For example the KO2 LT255/70R18 (32" tire) is $247 ea while the LT255/75R17 (32" tire) is $235. (Prices from the BFG website). Just ask any Sahara owner who has looked at tires about availability. One of the things I like about my Chief over my Sahara is the fact that it has 17" wheels and there are tire options galore out there.
 

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Discussion Starter #15
You stated in your opening post that you liked the KM2s that you had on your TJ. You have a couple of choices that will fit without modifications and will fit your current rims - LT255/75R17 BFG Mud Terrain KM or LT255/80R17 BFG Mud Terrain KM2.

I am not sure what the difference is between the KM and KM2 but the LT255/75R17 is apparently not available in the KM2 and the LT255/80R17 is apparently not available in the KM.

The LT 255/75R17 tire is the same size tire you now have but instead of the SRA glorified street tread, it is the aggressive tire that is on the Rubicon, Recon and Chief and a few others. It retails for $241 and is a 32" tall tire (actually a few hundreds of an inch over 32. The LT255/80R17 tire retails for $273 and is according to BFG 33.3" tall which would be about 6/10 of an inch closer to fenders, but is a 10" tire so if it rubs it would not be nearly as bad as the LT285/75R18 tire you are looking at.

In addition, you could keep your stock rims until you decide to replace them. Also keep in mind than any 18" class tire will be more expensive than the same class tire in 18". For example the KO2 LT255/70R18 (32" tire) is $247 ea while the LT255/75R17 (32" tire) is $235. (Prices from the BFG website). Just ask any Sahara owner who has looked at tires about availability. One of the things I like about my Chief over my Sahara is the fact that it has 17" wheels and there are tire options galore out there.
You are right. I need to just bite the bullet and get the KM2s. But I think I'll do 285/70/17s....I think that's the biggest I can go without lift or changing/cutting my fenders.
 
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