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Old 03-17-2014, 02:25 PM   #1
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Using minimum rim width?

I am interested in putting the Kumho 315 70/R17 on my stock Sport S rims. I believe the stock rims are 8.5 inches in width and that's the minimum for these tires.

I spoke with a dealer who told me you should avoid using the minimum on the width range because you get a bad ride from that. he started explaining that the tires "balloon" and you don't have the sidewall supporting the weight as much as you should.

Can anybody comment on this?

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Old 03-17-2014, 02:34 PM   #2
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I hope a 315/75/16 fits on a 16x8 wheel, because that's what I just ordered. Any input on this configuration would be great.

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Old 03-17-2014, 02:48 PM   #3
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Your stock wheels are 7.5"...those tires might be to wide
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Old 03-17-2014, 03:54 PM   #4
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People put 315 tires on stock jk wheels no problem...the problem becomes the tires rubbing because the back spacing is not enough. Do you plan on using wheel spacers to push the wheels out farther?
Do you have a lift installed?
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Old 03-17-2014, 03:57 PM   #5
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The tires should fit the rims ok. I've run 33x12.5R17 BFG KM2's on stock JK 17's.
Contact patch might be a little small but you can air down and do the chalk test to maximize it.

You may need some 1.25" to 1.5" spacers to keep the tires from rubbing your frame, fender liners, brake lines and sway bars. Spidertrax spacers are about $99 a set, you'll need 2 sets.
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Old 03-17-2014, 03:58 PM   #6
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I put 315x70x17 on my stock Call of Duty rims, 7.5" width, with 1.5" spacers, and I have had no issues at all.
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Old 03-17-2014, 04:47 PM   #7
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Thanks

Thanks, I realized after posting that they are indeed 7.5".

I'm planning a small lift (2.5" Teraflex) and adding spacers. Either rough country or spidertrax.

Thanks, I'll give it a try...

By the way, if anybody has any recommendations on a different 35 inch tire, let me know. I'm a newbie at this..
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Old 03-17-2014, 05:06 PM   #8
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Quote:
Originally Posted by malangon View Post
Thanks, I realized after posting that they are indeed 7.5".

I'm planning a small lift (2.5" Teraflex) and adding spacers. Either rough country or spidertrax.

Thanks, I'll give it a try...

By the way, if anybody has any recommendations on a different 35 inch tire, let me know. I'm a newbie at this..
For a good all around tire....duratracs or BFG A/T. You will get 100 opinions on tires though.
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Old 03-17-2014, 05:47 PM   #9
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The GY Duratracs are one of the most popular tires out there. I know a lot of guys that run them. They are also one of the lighter and aggressive looking AT tires out there weighing only 60 lbs in the 315/70R17. This past year some "New" tires are coming out. Tires that cover the gap between AT tires and MT tires. Better suited for us guys that have a DD and like too off road on the weekends. Here are a couple of examples.
Mickey Thompson Performance Tires & Wheels
Dick Cepek Tires & Wheels
Falken also has a new tire coming out. - Falken’s new WildPeak MT. (They say it's pretty quiet)
All the above tires have a longer tread life than most MT's, are more aggressive than AT tires and are not as loud as most MT tires.
Good luck with your search! So many good tires to choose from.
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Old 03-17-2014, 06:02 PM   #10
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I run the Falken wild peaks and they have worked out really well. Very good in rain and snow, quiet as a DD. About $225/tire.
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Old 03-18-2014, 05:46 PM   #11
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Hey guys, I just posted a "rim width" question on another thread, only came across this one after.... In order not to double post, I would really like some of the great experience/advice I've been gathering off this forum!

Largest tire on stock JK? Here's your answer!

PS: I've already bought a Superchip Flash-cal...

Thanks!
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Old 03-19-2014, 12:56 PM   #12
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I ordered the pro comp 7069 in a 16x8 wheel, and going with a 315/75/16 general grabber red letter tires. I'm hoping that the 4" back spacing is enough and not too much. It's a jkur lifted 2.5". Fenders are cut so I just need to cut my rock guards and punch seams. Will post pics after the wheels and tires get put on.

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