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Old 01-01-2014, 06:28 PM   #1
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Best rim size

I'm thinking of putting 285/70R17 tires on a 14 JKU Sport S. I'm considering Pro Comp 1089 polished wheels, but I am unsure if the 17x8 or 17x9 is the right wheel size. Any help would be appreciated.

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Old 01-01-2014, 06:33 PM   #2
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I think the 17X8 is acceptable. I know that 17X9 is recommended. I have 285/70/16 tires mounted on 16X8 Procomps.

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Old 01-01-2014, 06:37 PM   #3
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I also went with 16'' wheels. Tires were way more affordable in the wheel size.
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Old 01-01-2014, 06:38 PM   #4
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the best wheel size is 16".
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Old 01-01-2014, 06:46 PM   #5
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I have 17x8 with 315/70R17 tires. Either 8 in or 9 in wide rims would work with a 285 wide tire. I had 265s on my 8 inch wide rims before I got the 315s.

You can also go to the tire manufacturers website. They should have a table of rim widths recommended for each tire size. For example, BFG recommends 8-11 inch wide rims for my T/A KOs.
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Old 01-01-2014, 07:00 PM   #6
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Good thread. I'll probably go with 16s, based on fact I can go wide or skinny. Seems like most 15" tires are 33x12.5, which tend to stick out about 2" from fender. 16" is a good compromise and offers more flexibility without incurring the costs of bigger wheels and tires. Looking at the ATX Artillery in 16" with 285/75x16 Duratracs.
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Old 01-01-2014, 07:36 PM   #7
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Great, looks like I can do the 8 inch rim. Thanks!
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Old 01-01-2014, 07:47 PM   #8
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if you are never going to go 35's then I would get the 8" wide tires. I run 285/75-17 on stock 7.5" rims and I like how they look. You will be amazed at how quickly 285/70-17 tires start looking small The first day you think they are nice and big but by the end of the week you are wishing you went bigger.
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Old 01-01-2014, 08:11 PM   #9
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if you are never going to go 35's then I would get the 8" wide tires. I run 285/75-17 on stock 7.5" rims and I like how they look. You will be amazed at how quickly 285/70-17 tires start looking small The first day you think they are nice and big but by the end of the week you are wishing you went bigger.
Did you use wheel spacers on the stock rims?
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Old 01-01-2014, 08:18 PM   #10
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if you are never going to go 35's then I would get the 8" wide tires. I run 285/75-17 on stock 7.5" rims and I like how they look. You will be amazed at how quickly 285/70-17 tires start looking small The first day you think they are nice and big but by the end of the week you are wishing you went bigger.
But that is not enough sidewall for wheeling
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Old 01-01-2014, 08:38 PM   #11
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But that is not enough sidewall for wheeling
really? I am surprised as I bet a lot of other people are too lol.
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Old 01-01-2014, 08:40 PM   #12
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Did you use wheel spacers on the stock rims?
yes 1.5" spidertrax

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Old 01-01-2014, 08:55 PM   #13
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ahhhh. so many choices but if this is a DD vehicle with a little trail ridding then use a P285/70r17 (not and LT but P series) on a 9" wide wheel. if you don't need the cut resistance of a 10 ply heavy duty tire don't put them on. unsprung weight is not your friend and 10 ply tires are much heavier. fuel mileage will suffer with a heavier tire, riding qualities will suffer as well as your get up and go. use the 9" wide wheel with a 4.5" backspace. the slightly wider wheel will make the tire look bigger then what it is (if that's important) but most important steering response will be quicker and tires will wear flatter and longer. oh ya did I forget to tell you they are a whole bunch cheaper too. look at the new BFG, nitto ATor the Firestone destination AT. all three are very easy free rolling fuel efficient tires. smooth and quite too.
all bets are off if your using it differently then described.
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Old 01-01-2014, 09:06 PM   #14
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if you want to go a little taller as your going to have a little lift on use the toyo atII. they made the tread a lot more compliant and increased the traction capabilities by adding a lot more siping. I would stay with the 9" wide rim if its a DD. if you plan on doing some hard wheeling do the 8" wide.
just so you know. the 285/70r17 is 33" tall and about 11.5" wide. the 285/75 is 34" tall so sidewalls are even taller. the toyo is a really neat tire too. works well everywhere. I would say its probably the most versatile tire you could put on a jk. but with taller sidewall fuel mileage will suffer a bit and you will have changed your final drive gearing enough that you will have a less get up and go. and steering will be a little less responsive.
good luck and good wheeling
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Old 01-01-2014, 09:08 PM   #15
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ahhhh. so many choices but if this is a DD vehicle with a little trail ridding then use a P285/70r17 (not and LT but P series) on a 9" wide wheel. if you don't need the cut resistance of a 10 ply heavy duty tire don't put them on. unsprung weight is not your friend and 10 ply tires are much heavier. fuel mileage will suffer with a heavier tire, riding qualities will suffer as well as your get up and go. use the 9" wide wheel with a 4.5" backspace. the slightly wider wheel will make the tire look bigger then what it is (if that's important) but most important steering response will be quicker and tires will wear flatter and longer. oh ya did I forget to tell you they are a whole bunch cheaper too. look at the new BFG, nitto ATor the Firestone destination AT. all three are very easy free rolling fuel efficient tires. smooth and quite too. all bets are off if your using it differently then described.
Yes, it will mostly be a DD. I am leaning toward MT Baja ATZs
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Old 01-01-2014, 09:13 PM   #16
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if you want to go a little taller as your going to have a little lift on use the toyo atII. they made the tread a lot more compliant and increased the traction capabilities by adding a lot more siping. I would stay with the 9" wide rim if its a DD. if you plan on doing some hard wheeling do the 8" wide.
just so you know. the 285/70r17 is 33" tall and about 11.5" wide. the 285/75 is 34" tall so sidewalls are even taller. the toyo is a really neat tire too. works well everywhere. I would say its probably the most versatile tire you could put on a jk. but with taller sidewall fuel mileage will suffer a bit and you will have changed your final drive gearing enough that you will have a less get up and go. and steering will be a little less responsive.
good luck and good wheeling
I am loving them. I replaced 285/70-17 at2's with them and they are actually taller by about 1.5" in real life. the 285/70-17 were under 32" actual mounted and the 75's are exactly 33" mounted with 30psi. They are incredibly smooth and I have 4.10's and no power difference and around town mpg is the same and hiway is not much difference not enough to now if it is the tires or just winter blend. I would agree that steering is probably not as responsive but still not bad. If you did not know what rating they were you would never guess by riding in the jeep.
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Old 01-01-2014, 10:28 PM   #17
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Right gears, great tire size and great tire. Like I said. Its about the best all around do everything well tire for a jk I know of.
When you get around to it switch to a 9 wide RIM and on road property will be enhanced.
Good wheeling
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Old 01-02-2014, 01:39 AM   #18
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If you air down a lot go with the 17x8. That's what I went with after finding the guys that air down a lot like me needs the narrower wheel to help stop the tire from braking the bead.
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Old 01-02-2014, 06:24 AM   #19
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Everyones use dictates different combinations. And if you did actually do a lot of wheeling with the DD use a wheel designed for wheeling. Like interco Birddog wheel. Its the only wheel designed to be 100 percent functional. Has a special low pressure bead seat too.check out the website
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Old 01-02-2014, 07:43 AM   #20
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Everyones use dictates different combinations. And if you did actually do a lot of wheeling with the DD use a wheel designed for wheeling. Like interco Birddog wheel. Its the only wheel designed to be 100 percent functional. Has a special low pressure bead seat too.check out the website
do you have a time line with the 17X8 hub centric rim is going to be out? I volunteer to be a beta tester.
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Old 01-02-2014, 07:59 AM   #21
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If the wind is blowing the right direction the worlds first 100% functional jk wheel will hit in 3-4 months.
Will make you a killer one time only deal but in return you must use the heck out of your jk and post results of wheel performance
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Old 01-02-2014, 08:01 AM   #22
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If the wind is blowing the right direction the worlds first 100% functional jk wheel will hit in 3-4 months.
Will make you a killer one time only deal but in return you must use the heck out of your jk and post results of wheel performance
pm sent.
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Old 01-04-2014, 08:53 PM   #23
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So, if I go with 16 inch rims (285/75R16) instead of 17, does the back spacing need for the rim change?
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Old 01-04-2014, 09:01 PM   #24
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No, spacing stays the same. Just get a little more sidewall
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Old 01-05-2014, 07:53 PM   #25
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ahhhh. so many choices but if this is a DD vehicle with a little trail ridding then use a P285/70r17 (not and LT but P series) on a 9" wide wheel. if you don't need the cut resistance of a 10 ply heavy duty tire don't put them on. unsprung weight is not your friend and 10 ply tires are much heavier. fuel mileage will suffer with a heavier tire, riding qualities will suffer as well as your get up and go. use the 9" wide wheel with a 4.5" backspace. the slightly wider wheel will make the tire look bigger then what it is (if that's important) but most important steering response will be quicker and tires will wear flatter and longer. oh ya did I forget to tell you they are a whole bunch cheaper too. look at the new BFG, nitto ATor the Firestone destination AT. all three are very easy free rolling fuel efficient tires. smooth and quite too. all bets are off if your using it differently then described.
So the backspacing on the 17x9 is 4.75 rather than 4.5 (as on 17x8. Will this be sufficient with the 285/70R17?
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Old 01-05-2014, 07:56 PM   #26
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So the backspacing on the 17x9 is 4.75 rather than 4.5 (as on 17x8. Will this be sufficient with the 285/70R17?
that is plenty. You would be safe with anything from 5.2" or less.
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Old 01-05-2014, 08:04 PM   #27
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love the 17 inch/35 tire setup
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Old 01-05-2014, 08:12 PM   #28
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Gopokesjeep is spot on, now go get some New shoes. Also try an insure that your choice of wheel is hub centric and as light as you can get. Then post pictures with how it performs. A friend of mine just got some NITTO tires and wheels from discount tire. Called on the way to San Diego. Could not believe how quite and smooth it road. He removed steel 16" rims and factory tires. You can expect the same results.
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Old 02-12-2014, 04:05 AM   #29
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If the wind is blowing the right direction the worlds first 100% functional jk wheel will hit in 3-4 months. Will make you a killer one time only deal but in return you must use the heck out of your jk and post results of wheel performance
WOW. Another 4 months?
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Old 02-12-2014, 09:59 AM   #30
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17 is the new 15. Many 17" options out there to go with. I love my 285-70-17's.

I went with Level 8 Guardians which are 8.5" wide giving many different tire options to fit.

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