I have been thinking lately about this bc im going into the new tire route here soon. But as you flex on a trail wouldnt it be easier to stuff a 30 than a 31 into your wheel well? like couldnt u get alil more flex with a 30? or am I just thinking stupidly?

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05 KJ Limited (fully loaded)
2.5in Daystar front spacer/OME HD rear coils
Rancho RSX shocks
31x10.5x15 BFG AT on black steels
Front and rear tow hooks
Polk audio db6501 full range speakers and tweeters
12" Kicker Comp CVR sub

30's will give you 1/2" more flex than 31's. 31's will give you 1/2" more ground clearance than 30's. It is a trade off. I chose 31's and love it. Also, just FYI, I found that 31x10.50x15 were considerably less expensive than 16" version. Enough difference for me that I bought a set of Black D's from Summit in addition to tires and paid about the same as just tires for 16" wheel.

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2007 Light Khaki 4x2 Sport
- Debadged - LTT CAI with Amsoil Filter - JVC HD Radio - Infinity BassLink
- Iggee Seat Covers - Black Moabs - 265/75-16 Cooper Discoverer ATP - 4.10's
- DIY Franky sitting at 23.75" - Al's 4.5 UCAs - Trimmed F&R Bumpers
- Removed Rear Sway Bar - Removed Rear Vibration Damper
- 75k miles so far...

I don't have a problem stuffing my 32's. It's tight, but they fit. 31's won't be a problem.

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- Mike
'12 JK

Jeep Tech Files

Depending on the actual specs from brand to brand, there is often much less than 1" difference between "30's" & "31's.', anyway. Make sure you check the actual specs of the tire you are interested in.

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LOST # 633
'05 KJ 3.7L/6spd/241 245/75/16 MT's
'88 MJ 4.0L/AW4/231 SWB HPD30 & trac-loc D44 w/3.73's
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