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Old 11-10-2007, 11:17 AM   #1
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BIggest wheel/tire size you can put on....

was wondering what the biggest wheel/tire size you can put on an 08 JK sahara without having to do a lift kit? stock size is R18..... thanks not really sure hwo to post pics but here is a link to the wheel i was looking at procomp 8179

as far as rim size i was going to go with the 18 x 9... i know the stock tires will not fit thanks for the help just figured i id see what the biggest wheel i can put on without it rubbing etc... also how different will it handle...
sorry for the newbie questions guys, 1st jeep....

http://www.4wd.com/jeep-parts.aspx?c...d=168&plID=408

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Old 11-10-2007, 11:24 AM   #2
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Pavement pounder or you going to use it for off road?

Im just wondering.

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Old 11-10-2007, 01:19 PM   #3
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good point sorry bro... 08 JK sahara.....wanna use it for mostly street, everyday drive and some time off road.. more of my daily driver....i was thinking of the pro comp all terrain tires as a good choice but figured you guys will know better.... the store recommend not using stock tires on the 9 inch rim as the stock rim is 8.5 wide...

dont really see how the stock 18 x 8.5 is that much different from an 18 x 9 but they said it will be different handling and not good.... stock tire is bridgestone dueler 255/70/18 they rcommend on the 9 inch rim 285/60/18

they said it would be similiar to the overall height and width ofthe stock setup.. also not sure if this makes a difference but got a meyers sno plow on the front so i do not know how high i can go
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Old 11-10-2007, 03:33 PM   #4
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You can run up to a 33" tire without issues. Any larger and you will have rubbing problems. Depending on the offset of the wheels you are looking at, you could still have minor rubbing with the 33s.
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Old 11-10-2007, 03:42 PM   #5
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thanks for thesponse but i am a bit confused... i am using

http://www.redrock4x4.com/tech/tire_...&method=metric

so according to this a 285/60/18 is 31.5/11.2/18 where as the stock tires which are 255/70/18 32.1/10/18

so the 285/60/18 tires is an inch taller but not as wide correct? if so how is 285 smaller than 255... sorry but all this metric conversion shit confuses me...
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Old 11-10-2007, 03:58 PM   #6
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xxx/yy/zz

X= the width in Millimeters of your tire
Y= the percentage of width that is your side wall
Z= The inside diameter (i.e. the size of your rims)

285mm = 11.2in

60% of 11.2 is 6.72in
there are two side walls so thats a 13.44 total side wall
13.5 + 18 = 31.5in

so the tire is 31.5 x 11

I just wanted to give you an example of how the math works. I know you already knew the tire size. The thing with metric tires is that you need all three numbers to know the total tire size.
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Old 11-11-2007, 09:27 AM   #7
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thanks teejay...so if i am correct the the 275/65/18 will be more similar to the stock 255/70/18 where as the 285/60/18 is not
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Old 11-11-2007, 10:45 PM   #8
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What if your staying with the stock rims? Whats the biggest tire size you can pull off sticking with the stock 16" rims? I plan to do a 2" BB a little down the road, but probably start with tires for now. Id like to do either the 33" Mickey Thompson MTZs or the 33" Dick Cepek Mud Countrys, but I do some mild off roading and am a little worried about the rubbing till I get the BB.
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Old 11-12-2007, 09:21 AM   #9
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the OD of the tire has nothing to do with the wheel size. a 33" tire is the same height on a 18" wheel, as it is on a 16" wheel.


u can do a 33" tire on a JK without a lift on stock wheels, no problem.
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Old 11-12-2007, 02:51 PM   #10
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With no major rubbing problems off road? I keep hearing differing opinions regarding 33's without the lift.
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Old 11-13-2007, 10:34 PM   #11
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Ok I think Im just going to go for it and do 285/75R16s, will I need the wheel spacers on the stock rims for them to fit width wise?
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Mods so far: 285/75/16 M/T MTZ's on Cragar Soft 8's with no lift, 130w KC Slimlites, front tow hooks, Draw-Tite 2" hitch receiver

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Old 11-15-2007, 08:27 PM   #12
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I ordered a set of Mickey Thompson 285/75R16 today. Still staying with the stock rims (planning on it atleast), but Im not sure about the backspacing, if some wheel spacers are a requirement. If so I am still unsure if Im going to do them or get some less expensive new wheels.

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NOW: '07 Unlimited X - Jeep Green, Auto, Soft Top, 4.10 Gears, Trac-Lok LSD, Infinity Sound System
Mods so far: 285/75/16 M/T MTZ's on Cragar Soft 8's with no lift, 130w KC Slimlites, front tow hooks, Draw-Tite 2" hitch receiver

Daddis Fight Camps / Team MFS
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