Wheel and Tire Discussions - Page 9 - JeepForum.com

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post #121 of 2367 Old 10-13-2011, 06:12 AM
thecegla
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Hi guys I'm newbie on this forum and in off-road at all.
I just got a first Jeep and had couple of trips with it to the desert - as this is most common in the place I live.

I got stuck few times, mostly due to lack of experience , however I believe changing a tire/rim combination might improve sand/desert capability of the car.

Although I like above presented solutions, I was thinking about fixing smaller rims -16'' (presently stock 18''), so i get even greater footprint on the send when deflated. Also was considering if installing steel rims would not be a good idea as I believe it is harder to loose tire.
For that planning to buy 275/70/R16 (maybe 275/75/R16 but those seem to be too high).

I'm really curious about your opinion ... any serious cons ??

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post #122 of 2367 Old 10-13-2011, 07:54 AM
fljeepleo
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Well first thing is what is your engine? If you have the Hemi the smallest wheel that will clear the brakes is the 18 inch. If you have the pentastar I believe the smallest you can do is a 17 inch. I maybe mistaken on the 17 inch but if you have the hemi due to the HD brakes anything under 18 will not fit.

2011 Stone White Grand Cherokee Laredo E, ORA1, QT2, Factory Trailer Tow, 3m FX 15% Tint.
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post #123 of 2367 Old 10-13-2011, 08:31 AM
Terminator2
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Quote:
Originally Posted by thecegla View Post
It is V6 Pentastar ...
16s will likely not clear the calipers as 17s are the smallest that supposedly fit the v6 and 18s the smallest that fit the v8 so unless you want to grind down your stock calipers the 16s will not fit.
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post #124 of 2367 Old 10-13-2011, 08:56 AM
thecegla
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cheers guys,

so I have to check what is available with size 275/70/17 (or maybe even 275/65/17), (after all I read here I guess 275/75 /17 will not fit)..
If you could only comment also is steel rims are good idea or not ?
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post #125 of 2367 Old 10-13-2011, 11:14 AM
Terminator2
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Quote:
Originally Posted by thecegla View Post
cheers guys,

so I have to check what is available with size 275/70/17 (or maybe even 275/65/17), (after all I read here I guess 275/75 /17 will not fit)..
If you could only comment also is steel rims are good idea or not ?
275/70/17 (~32.2" tall) might fit but it might rub depending on the tires actual specs. 275/65/17 (~31.1" tall) should fit easily with no rub unless you are trying to run a 17x10 wheel with it.
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post #126 of 2367 Old 10-13-2011, 12:26 PM
thecegla
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Quote:
Originally Posted by Terminator2 View Post
275/70/17 (~32.2" tall) might fit but it might rub depending on the tires actual specs. 275/65/17 (~31.1" tall) should fit easily with no rub unless you are trying to run a 17x10 wheel with it.
thank you very much for all comments - really appreciate it

Now need to check what is available here in terms of rims and tire in this size.
Maybe I'll have to order in states ...

Also was wondering if any of you guys had experience inner bead locks like those for example: http://www.innerairlock.com/beadlocks/

they seem to be a good solution (not cheap though) as it would allow to deflate down to 10 PSI even - this is very helpfull on very loose sands, which can happen really out of the sudden here (learned it hard way )
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post #127 of 2367 Old 10-13-2011, 12:46 PM
Terminator2
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Quote:
Originally Posted by thecegla View Post
thank you very much for all comments - really appreciate it

Now need to check what is available here in terms of rims and tire in this size.
Maybe I'll have to order in states ...

Also was wondering if any of you guys had experience inner bead locks like those for example: http://www.innerairlock.com/beadlocks/

they seem to be a good solution (not cheap though) as it would allow to deflate down to 10 PSI even - this is very helpfull on very loose sands, which can happen really out of the sudden here (learned it hard way )
Yeah I have some sand but nothing like you have. My Jeep has no issues crawling the sandy (and some nasty slick clay) trails behind my house with the tires fully aired up to 36 psi and I have 265/50/20s so I have 1" less sidwall on each par of my tires. I will be running 275/55/20 tires eventually or I might go down to 18s and run 275/65/18s. I have not seen inner beadlocks but if that works than it would be a good mod to have.
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post #128 of 2367 Old 10-17-2011, 08:28 PM
EVILUTION
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This is not my picture but I think the 275/55/20's look great on the stock wheels!

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post #129 of 2367 Old 10-20-2011, 11:45 AM
Terminator2
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New Plan for me though. I sold the stock 20 inch wheels and tires. Monday I have 305/60/18s comming and 18 x 9.5 wheels as well. I love the look of the stock 20s but they needed to be wider like at least a 9.0 IMO and during any kind of offroading the 20s will get messed up very easily do to little sidewall (50 or 55 series tire).
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post #130 of 2367 Old 10-25-2011, 10:20 AM
webspoke
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Quote:
Originally Posted by dedoman View Post
Hmmm. I wonder if this setup will work without spacers?! I'm putting a level or lift kit on... No QL.

Thoughts??
If you mean the 285/60/18's - it works fine with my QL at it's normal and highway setting (1/2" lower). There is another jeep on here without QL with the same tire on XD wheels also who has not mentioned any issues (see page 5 of this thread)

2013 White V8 Limited, 285/60/18 Terra Grapplers, 25000 miles problem free
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post #131 of 2367 Old 10-25-2011, 01:07 PM
DamonP
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Lots of good looking wheel/tire combos on here. I am looking at going skinny and taller on the Mopar Offroad Wheels or possibly even the Spare Steelies and plan to get the Rocky Road Outfitters 2.5" lift. All that being said, anyone have a guess if 265/70/18 (equiv. to 32.6x10.7x8.3) would fit?
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post #132 of 2367 Old 10-25-2011, 07:11 PM
My1stJGC
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Quote:
Originally Posted by webspoke View Post
Yes, your speedo will read low by 3%. It is about 2mph at 70mph (reads 70, actually running 72). I've checked mine against a GPS and that is pretty accurate.
Shouldn't you be running slower. According to www.1010tires.com mine being a laredo 245/70-17 vs 285/60-18 being slower. Stock 245/70-17 60mph & 285/60-18 58.1mph.
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post #133 of 2367 Old 10-26-2011, 10:22 AM
webspoke
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Quote:
Originally Posted by My1stJGC View Post
Shouldn't you be running slower. According to www.1010tires.com mine being a laredo 245/70-17 vs 285/60-18 being slower. Stock 245/70-17 60mph & 285/60-18 58.1mph.
285/60/18 are 31.5" vs 245/70/17 at 30.5" (same as all the other oem wk2 sizes). And I checked mine with a standalone gps as well, at it matches the calculations, about 3% error in the speedometer.

2013 White V8 Limited, 285/60/18 Terra Grapplers, 25000 miles problem free
2011 Black V8 Overland, retired at 46000 miles with QL problems
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post #134 of 2367 Old 10-26-2011, 11:24 AM
dedoman
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Quote:
Originally Posted by My1stJGC View Post
Shouldn't you be running slower. According to www.1010tires.com mine being a laredo 245/70-17 vs 285/60-18 being slower. Stock 245/70-17 60mph & 285/60-18 58.1mph.
I think he's on the mark!



Stock Tire - 265/60R18 >**optional tire 1** Tire 1 - 285/60R18 >Search Tires
Section Width: 10.43 in 265 mm
**optional tire 1 Section Width: 11.22 in 285 mm
Rim Diameter: 18 in 457.2 mm
**optional tire 1Rim Diameter: 18 in 457.2 mm
Rim Width Range: 7.5 - 9.5 in
**optional tire 1 Rim Width Range: 8 - 10 in
Overall Diameter: 30.51 in 774.95 mm
**optional tire 1Overall Diameter: 31.46 in 799.08 mm
Sidewall Height: 6.25 in 158.75 mm
**optional tire 1 Sidewall Height: 6.73 in 170.94 mm
Radius: 15.25 in 387.35 mm
**optional tire 1 Radius: 15.73 in 399.54 mm
Circumference: 95.84 in 2434.3 mm
**optional tire 1 Circumference: 98.83 in 2510.2 mm
Revs per Mile: 681.7
**optional tire 1Revs per Mile: 661.1
Actual Speed: 60 mph 100 km/h
**optional tire 1 Speedometer1: 58.1 mph 96.9 km/h
Speedometer Difference: - Speedometer Difference: 3.116% too slow
**optional tire 1** Diameter Difference: - Diameter Difference: 3.02%
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post #135 of 2367 Old 10-26-2011, 02:34 PM
My1stJGC
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Quote:
Originally Posted by webspoke View Post
Yes, your speedo will read low by 3%. It is about 2mph at 70mph (reads 70, actually running 72). I've checked mine against a GPS and that is pretty accurate.

Then this is a typo.
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