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post #1 of 9 Old 09-16-2013, 09:21 AM Thread Starter
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Tire change questions

I have the rubicon express 3.5 short arm kit and am running a 275/65 r20 wheel and tire set up. I recently went to 4.56 gears and it helped a ton. I am debating about moving to a 37x12.50 tire. My question is how will this effect my on road handling. will it smooth out the ride at all (a little rough now), will I notice any ill effects? basically is this a smart or dumb decision and what will change? I will rarely, if ever, go off-road and in the event I do it will be Strictly very easy trails.Thanks!
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post #2 of 9 Old 09-16-2013, 09:25 AM
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What shocks are you running?


2012 Jeep Wrangler - Gecko
3.5" Rock Krawler X Factor
40x13.5 Nitto Mud Grapplers / 17" Fuel Hostage
Poison Spyder Brawler Lite / Poison Spyder Rocker Knockers
Poison Spyder RockBrawler w/ Tire Carrier



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and yet... canada still sucks worse

we'd make fun of your prime minister if we could... unfortunately nobody's ever heard of him!
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post #3 of 9 Old 09-16-2013, 09:32 AM Thread Starter
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I will have to double check but I believe I am running Rubicon Express shocks. When I purchased the Kit I explained I wanted Maximum on road comfort so I Guess it is whatever 4wd hardware said was the best. I will check shortly.
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post #4 of 9 Old 09-16-2013, 09:36 AM
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Quote:
Originally Posted by rzide View Post
I Guess it is whatever 4wd hardware said was the best. I will check shortly.
There's the first part of your problem.


2012 Jeep Wrangler - Gecko
3.5" Rock Krawler X Factor
40x13.5 Nitto Mud Grapplers / 17" Fuel Hostage
Poison Spyder Brawler Lite / Poison Spyder Rocker Knockers
Poison Spyder RockBrawler w/ Tire Carrier



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Quote:
Originally Posted by 2k2wranglerx View Post
and yet... canada still sucks worse

we'd make fun of your prime minister if we could... unfortunately nobody's ever heard of him!
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post #5 of 9 Old 09-16-2013, 09:44 AM Thread Starter
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They are aev blisteins dunno the specifics.
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post #6 of 9 Old 09-16-2013, 11:32 AM
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What kind of tires are you running? Load range? PSI?

Bilsteins are a little on the firm side, which some like.

I would agree with before, don’t just go by what some big conglomerate chain store recommends. You’re lucky they got you Bilstein but Rubicon Express is owned by 4 Wheel Parts, so naturally they pushed the RE lift.

-Dan

2008 JK X: Sold
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post #7 of 9 Old 09-16-2013, 12:08 PM
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More sidewall and at lower psi should help the ride a little. Try 30 psi and go from there (up & down) to find a ride quality your comfortable with and that work with your load rating (ie: higher load rating = stiffer sidewall and might work better with lower pressures).

I ran 30 psi rear and 32 psi up front with 315/70r17s. That's about the same amount of sidewall you'd be running with 37's. A little firm, but not harsh. Those #'s gave me the best compromise between ride quality & gas mileage. I also run bilsteins.

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post #8 of 9 Old 09-16-2013, 12:22 PM Thread Starter
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I run nitto terra grapplers with the E load range and i Believe 32 psi
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post #9 of 9 Old 09-17-2013, 04:33 AM Thread Starter
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Any input would be greatly appreciated. I need to make a decision.
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