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Unread 07-24-2014, 08:30 PM   #1
watsonkyle42
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Biggest tires I can get away with.

I am new to the forum and was wondering what the biggest tires I could put on my 2003 Wrangler Rubicon 16x8 wheels are. The ones I have are 30x9.5 I beleive and just look way to skinny to me I do not currently have any lift kits installed wanted to see if no could get away with out having to install one .. any advice would be greatly appreciated thanks!

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Unread 07-24-2014, 11:08 PM   #2
robncar
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If you had 15" wheels, that would be 31x10.50x15 - 30.7" high and 10.5" wide

With the Rubicon, stock was LT245/70R16 - 29.5" high and 9.8" wide

So, the size that would fit (on a stock TJ Rubicon) and be equivalent to the 15" tire above for the 16" wheel would be LT265/70R16 - 30.7" high and 10.6" wide

You "may" need to shim the steering stops with a couple of washers to keep from rubbing at full steering lock
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Unread 07-25-2014, 05:21 AM   #3
KaiserJeep
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The stock Rubicon tires were LT245/85R16's or 30.7" high and 9.3" wide when mounted on the 16x8" stock Moab wheels with 5" backspacing. That is the largest size with no rubbing.
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Unread 07-25-2014, 06:28 AM   #4
Vinman
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Quote:
Originally Posted by KaiserJeep View Post
The stock Rubicon tires were LT245/85R16's or 30.7" high and 9.3" wide when mounted on the 16x8" stock Moab wheels with 5" backspacing. That is the largest size with no rubbing.
LT245/75R16 on the Canadian TJ Rubicons.
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Unread 07-25-2014, 06:39 AM   #5
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Quote:
Originally Posted by KaiserJeep View Post
The stock Rubicon tires were LT245/85R16's or 30.7" high and 9.3" wide when mounted on the 16x8" stock Moab wheels with 5" backspacing. That is the largest size with no rubbing.
245/75r16 on the American ones too.
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Unread 07-25-2014, 06:50 AM   #6
Unlimited04
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Quote:
Originally Posted by watsonkyle42 View Post
I am new to the forum and was wondering what the biggest tires I could put on my 2003 Wrangler Rubicon 16x8 wheels are. The ones I have are 30x9.5 I beleive and just look way to skinny to me I do not currently have any lift kits installed wanted to see if no could get away with out having to install one .. any advice would be greatly appreciated thanks!
stock tire size is a 31" tire, 245/75R16. that is generally considered the biggest you can fit without modifications.
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Unread 07-26-2014, 09:21 AM   #7
watsonkyle42
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So if I get cragar 15x8 wheels with 4 BS and some 33x12.5 tires for it is all i need is a 3.75" lift to prevent rubbing? I do run trails often prob 60% of time on road 40% off road
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Unread 07-26-2014, 09:24 AM   #8
Wheelin98TJ
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Quote:
Originally Posted by watsonkyle42 View Post
So if I get cragar 15x8 wheels with 4 BS and some 33x12.5 tires for it is all i need is a 3.75" lift to prevent rubbing? I do run trails often prob 60% of time on road 40% off road
That would work.

Zone 4.25 combo kit is another inexpensive option for getting the lift height you need.
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Unread 07-26-2014, 10:16 AM   #9
watsonkyle42
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4.25 wont make it look lifted too much compared to tires would it?
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Unread 07-26-2014, 10:26 AM   #10
watsonkyle42
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Also will I need anything else to make my jeep run right I read alot of stuff and sometimes I wonder if im getting into something I cant really afford due to people talking about having to change control arms and transfer case drop kits stuff like that .. I might add my jeep is automatic so I dont know if that has a bear in on the situation .. I just dont want to spend 2grand on the lift tires and wheela only to find out I have to spend another 2 grand to make it all work right.
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Unread 07-26-2014, 03:36 PM   #11
Unlimited04
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Quote:
Originally Posted by watsonkyle42 View Post
So if I get cragar 15x8 wheels with 4 BS and some 33x12.5 tires for it is all i need is a 3.75" lift to prevent rubbing?
you'll need to cycle the suspension with the springs removed...set up your bumpstop extensions, steering stops, etc.

Quote:
Originally Posted by watsonkyle42 View Post
I do run trails often prob 60% of time on road 40% off road
so if you drive 10,000 miles per year (about average), you spend 4000 miles off-road per year?
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Unread 07-26-2014, 06:22 PM   #12
watsonkyle42
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Ok maybe I got the percentages wrong lol good point I use it for my daily driver and hunting rig it may see 1000 miles off road a year as I do alot of hog hunting driving around the ranch at night. As for cycling the suspension and all that I honestly have no idea how too do that I was wanting to install lift kit my self but would it be a safer bet to have it professionally done as to the fact I dont know how to do the other stuff you're talking about? Or is it simple stuff I just need to read up on and maybe check out a couple you tube vids?
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Unread 07-26-2014, 07:50 PM   #13
Unlimited04
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Originally Posted by watsonkyle42 View Post
As for cycling the suspension and all that I honestly have no idea how too do that
lucky for you there are very detailed write-ups and more information that you could ever want, right here on this forum. Look at my signature.

and no, having it "professionally done" just means somebody else is going to take the parts out of the box and slap them on as fast as possible, without any consideration to whether stuff works or not.
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Unread 07-26-2014, 08:09 PM   #14
watsonkyle42
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Hey man thanks for your advice/help I know I probably sound like I shouldn't even be around a jeep lol this is a great forum with people who actually want to help and not just make fun of the guy who dosent know anything i am proud to be a member!
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Unread 07-26-2014, 11:01 PM   #15
J03_TJ
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Quote:
Originally Posted by watsonkyle42
... I do run trails often prob 60% of time on road 40% off road
Quote:
Originally Posted by Unlimited04
........ so if you drive 10,000 miles per year (about average), you spend 4000 miles off-road per year?
Not sure if he meant 60/40 was miles or time? Just sayin lots lower miles on the odo when wheeling vs cruising on asphalt. No offense just felt like typing on here. But I do get that these are our toys so we should be thinking about clock time (odo clock that is) on them not time spent in them.
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