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Old 06-09-2012, 09:26 PM   #1
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285/70R17 on stock rims and questions

Anyone running this size tire on stock rims? Specifically with a 6 spd and 3.73s. If so, how much power and mileage loss did you experience when you moved up from stock?

Any rubbing?

Thinking about running this size with the Teraflex 1.5" levelling kit. Anything I need to be aware of?

2012 JKU sport

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Old 06-09-2012, 09:31 PM   #2
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i ran them with out any rubbing and no lift until i discoed my sway bar then i just trimed the fenders. on the stock wheel you may rub a very little on the sway bar at full lock. this can be fixed by spacers or adding a washer or two to your stearing stops. because most tires never actually measure what there metric numbers say they should you might not rub at all. have the tire shop mount one up to check

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Old 06-09-2012, 09:45 PM   #3
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I am running them, no issues, love the look, tough to say difference in mileage, I have not adjusted my speedometer yet to match the tires.
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Old 06-10-2012, 12:21 AM   #4
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3" Rubicon Express lift and 285/70R17 tires.
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Old 06-10-2012, 12:43 AM   #5
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3" Rubicon Express lift and 285/70R17 tires.
Thanks. Any rubbing?
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Old 06-10-2012, 07:22 AM   #6
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Thanks. Any rubbing?
No rubbing at all. Actually am ordering a set of 35" tires this week.
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Old 06-10-2012, 11:38 AM   #7
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So I don’t start a new thread just to ask but not to jump the topic here either. I was looking at a JK the other day it had 315/70/17 on the stock 17 inch wheel, any thoughts on this set up? I was thinking it looked good.
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Old 06-10-2012, 05:25 PM   #8
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34s are good. probably has wheels spacers
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Old 06-10-2012, 05:29 PM   #9
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I'm running 285/70/17's on stock rims with a Teraflex 1.5" leveling kit and Spidertrax 1.5" wheel spacers but I have a auto tranny and 3:21 gears. I've noticed no loss in power or mileage.
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Old 06-10-2012, 06:00 PM   #10
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So I donít start a new thread just to ask but not to jump the topic here either. I was looking at a JK the other day it had 315/70/17 on the stock 17 inch wheel, any thoughts on this set up? I was thinking it looked good.
That setup is very popular. But you would definitely need wheel spacers in order to accommodate the 315s.
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Old 06-10-2012, 06:02 PM   #11
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My 285/70/17's rubbed very slightly on stock wheels. I was going to let it ride until the shop showed me the wear on the inside of the rubber. I though it could eventually compromise the tire so I got spacers. I posted pictures in the other thread of before and after wheel spacer with the 285/70/17's
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Old 12-11-2012, 05:40 PM   #12
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do you have pictures?

Im looking at getting some KMC rockstar 17 inch rims with duratec 185/70/17 duratec tires.

I have a 2012 rubicon with no lift kit.

I am mainly a highway driver with occasional light off roading...mainly for farm and hunting work. I am going to get a lift kit but want to wait a bit.

I am okay with getting spacers but I want to make sure that it wont ruin the tires until I get it
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Old 12-11-2012, 11:51 PM   #13
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The aftermarket rims have enough backspacing that you won't need spacers
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Old 12-12-2012, 08:06 AM   #14
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No rubbing at all. Actually am ordering a set of 35" tires this week.
No rubbing at all? Even when flexing on the trail?

I was under the impression that on stock wheels with no spacers, you could run them on the road fine...but offroad they'd get into the inner rear fender liners real bad, and possibly rub in the front too.
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Old 12-12-2012, 08:43 AM   #15
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^^^ ill vouch for that. even with a 2.5 in lift and the right backspacing ive seen 315 (34.5s) tear fender liners apart flexing off road.


35x12.5s in the picture but another guy in my club with the same lift runs 315s and they do the same thing.
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Old 12-12-2012, 09:54 AM   #16
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Yeah I had 285/75-16 (same thing as 285/70-17) on my '11 with 4.5" backspacing, and they would still rub offroad. Just barely...but they did rub. That's why I was so nervous about running 285s on stock wheels. I don't see how it would ever work on the trail. And I never could get a definitive answer from anybody who'd tried it. So I bought "the combo".
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Old 12-12-2012, 08:30 PM   #17
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285/70r17's

Installed the Teraflex leveling kit, then upgraded to the larger tires on MOAB rims. So far mall crawling no issues at all with rubbing.In mileage I lost 2mpg, acceleration might have lost some but not enough to be noticeable. I'm running Bridgestone Revo 2 tires. Quite on the road and better than average traction in snow and rain.

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