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31"s fit under no lift with no rub?


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I just read a post and one of the "smart guys" said for us newbies we should post a whole lot of specifics on what we want. Here's a lot of details and even two freaking pictures! :D

 

1. "Can 31" tire fit under my stock MJ with none to little rub?" My MJ is a 92, 4.0L, 2WD, bad azz machine!

 

2. I just bought a set of steel stock Wrangler wheels for 60 bucks. (picture below)

 

3. I want the "Destination MT" tire and I believe the smallest they offer is 31". (picture below)

 

2.

 

3.

 

I'll go with the smallest "Destination MT" tire I can find; I'll actually go with the "Destination AT" if I have to. I am keeping the 3.07 gear ratio for now because I need a daily driver and I'll be taking it on 2k+ mile trips this winter. I have the 4.0L High Output so I will be able to deal with the slow acceleration speed from the gear ratio (for now). Even though I'll be driving it on the road a lot and a road type stock size tire is best I still want an "off-road" type tire because the Comanche looks so much better :rotf: with nice tires.

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Are those wheels from a 2007 or newer wrangler? if so I think the bolt pattern is wrong. Just check it before you mount new tires on them. You can probably buy adapters to make them fit but the good ones are not cheap.

 

I put my old Comanche wheels on my 08 MK and it's the same bolt pattern. (picture below)

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an MK isn't a Wangler. the MK retains the 5 on 4.5 bolt pattern. The new wrangler has a 5 on 5" pattern.

 

2wd MJs sit lower than 4wd MJs and it'll be a reeeeal tight fit putting 31s in there. I'd say 30" tires are the max for a 2wd.

 

my 88 with 30" BFGs:

 

 

 

also, be prepared to hate driving an MJ with 31" tires and 3.07 gears. :ack:

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an MK isn't a Wangler. the MK retains the 5 on 4.5 bolt pattern. The new wrangler has a 5 on 5" pattern.

 

2wd MJs sit lower than 4wd MJs and it'll be a reeeeal tight fit putting 31s in there. I'd say 30" tires are the max for a 2wd.

 

my 88 with 30" BFGs:

 

 

 

also, be prepared to hate driving an MJ with 31" tires and 3.07 gears. :ack:

 

The light seems to be shining on me today. I checked the Wrangler they came off of and it was off a 06 Model, I assume that was the last year they made the 4.5, and I just measured my bolt pattern and the new wheels and they are the exact same size. :brows:

:cheers:

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I feel special being called a smart guy. Thank you, there arent many people whove ever said that to me. I'm just trying to help out. There are a few grumpy old bastards on here (no offense guys) that don't take the lack of info very well. The more info we have the better we can help you... thats all.... just makes sense. And I agree that the 30" tires would be much better. You may still get some rub with them as well. You could swap your lower control arms for WJ grand cherokee ones, or adjust the stops as mentioned. I scored a free set of 235's off of a wrangler because they didnt like the rubbing, but they don't rub on my 2wd MJ. The rubbing won't hurt anything, all the ones Ive seen do this barely show any marks on the tire from where this happens, its just a bad sounding annoyance. Good luck with your build, and keep us updated! :thumbsup:

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2wd MJs sit lower than 4wd MJs and it'll be a reeeeal tight fit putting 31s in there. I'd say 30" tires are the max for a 2wd.

I'm going to disagree with Pete. Not about the ride height -- the 2WD is lower than the 4WD -- but that's not a bar to running 31s if you use factory rims. I'm running 31x10.50s on my old '88 XJ. The only rubbing is on the lower control arms at full steering lock.

 

The solution is either shim the steering stops, as suggested above, or change to WJ Grand Cherokee LCAs that have a bend in them to allow more tire clearance.

 

I do agree with Pete that 30s are a better choice. I am currently using the 31s because I had them, not because I think they are the best choice for a stock height vehicle with stock gearing.

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I feel special being called a smart guy. Thank you, there arent many people whove ever said that to me. I'm just trying to help out. There are a few grumpy old bastards on here (no offense guys) that don't take the lack of info very well. The more info we have the better we can help you... thats all.... just makes sense. And I agree that the 30" tires would be much better. You may still get some rub with them as well. You could swap your lower control arms for WJ grand cherokee ones, or adjust the stops as mentioned. I scored a free set of 235's off of a wrangler because they didnt like the rubbing, but they don't rub on my 2wd MJ. The rubbing won't hurt anything, all the ones Ive seen do this barely show any marks on the tire from where this happens, its just a bad sounding annoyance. Good luck with your build, and keep us updated! :thumbsup:

 

lol, you knew I was you referring too you as "smart guy". Hey, I'm thankful for the information, I need as much as possible, even lectures. My build is far from over and I will keep yall updated.

Thanks for all the info,

Casey

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HOW CAN i TELL THE DIFFERENCE between high pinion and regular? I'm going to the junk yard saturday and there's a bunch of XJs there.

 

On a high pinion the pinion, that the driveshaft is connected to, enters the diff above the center line of the axle. A low pinion the driveshaft enters the diff below the center line of the axle. All Cherokees up to 99 and all MJ's used a high pinion D30.

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looks like they fit :yes:

 

 

On an off note, I do not recommend ever jacking up or supporting your vehicle by the leaf springs. This can prove to be very unsafe, and can damage the spring, as demonstrated by the bend in the location where you are currently jacking the vehicle up.

 

Just my .02.

 

-Alex

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:agree: Also the jack could slip causing a disaster!

 

According the Firestone website, they make a Destination MT in a 235/75/15. This would be your best choice with the 3.07s.

 

I will add these are good tires! I ran a set of 33s, and they lasted around 70K miles and never let me down (rotated very often!). I wasn't easy on them either! Took me through Tellico (r.i.p.), Uwharrie, Callantee, etc... etc... without a stumble.

 

If they made a 35", I would have got them for the MJ!

 

I will also add that these, at least the 33s, run pretty true to size. They were larger than friends 33" pro-comp MTs and BFG MTs for example.

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:agree: Also the jack could slip causing a disaster!

 

According the Firestone website, they make a Destination MT in a 235/75/15. This would be your best choice with the 3.07s.

 

I will add these are good tires! I ran a set of 33s, and they lasted around 70K miles and never let me down (rotated very often!). I wasn't easy on them either! Took me through Tellico (r.i.p.), Uwharrie, Callantee, etc... etc... without a stumble.

 

If they made a 35", I would have got them for the MJ!

 

I will also add that these, at least the 33s, run pretty true to size. They were larger than friends 33" pro-comp MTs and BFG MTs for example.

Well, I just got some 3.55 gears and already had them installed. Still how big inches wise are the 235/75/15. I saw firestone only had 30" destination MTs.

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I just looked up a chart.

 

 

______________________________________________________________________________

METRIC TIRE SIZE CONVERSION CHART

 

 

15 inch tires sizes

 

Width Aspect Wheel Diameter Section Width

205/70 15 = 26.3 8.1

245/70 15 = 28.5 9.6

205/75 15 = 27.1 8.1

215/75 15 = 27.7 8.5

225/75 15 = 28.3 8.9

235/75 15 = 28.9 9.3

245/75 15 = 29.5 9.6

265/75 15 = 30.6 10.4

215/85 15 = 29.4 8.5

245/85 15 = 31.4 9.6

275/85 15 = 33.4 10.8

315/85 15 = 36.1 12.4

325/60 15 = 30.4 12.8

 

 

 

 

16 inch tires sizes

 

Width Aspect Wheel Diameter Section Width

305/65 16 = 31.6 12.0

345/65 16 = 33.7 13.6

245/70 16 = 29.5 9.6

305/70 16 = 32.8 12.0

225/75 16 = 29.3 8.9

245/75 16 = 30.5 9.6

265/75 16 = 31.6 10.4

285/75 16 = 32.8 11.2

295/75 16 = 33.3 11.6

215/85 16 = 30.4 8.5

235/85 16 = 31.7 9.3

255/85 16 = 33.1 10.0

265/85 16 = 33.7 10.4

305/85 16 = 36.4 12.0

255/70 16 = 30.1 10.0

 

 

The above numbers are computed values and some rounding has been done on the computed values. The actual tire sizes can and will vary depending on the tire manufacturer.

 

To compute the values in the table above, use the formula of:

 

HEIGHT = ((width * aspect-ratio * 2) / 2550) + rim size

 

WIDTH = (width / 25.50 )

 

For example, a 235/75R15 tire is ((235*75*2)/2550)+15) = 28.8 inches of tire height. The tire width is figured by 235/25.5 = 9.21

 

Metric tire sizes are stated as three numbers. The way it reads is:

 

width / aspect ratio R tire rim size

235 / 75 R 15

 

Tire Size Calculator

 

 

P-Metric Size Actual Tire Width Actual Tire Height

15-inch rims 205/70R15 8.7 inches 26.2 inches

215/75R15 8.46 inches 27.6 inches

235/75R15 9.25 inches 28.8 inches

265/70R15 10.4 inches 29.6 inches

16-inch rims 245/75R16 9.64 inches 30.4 inches

285/75R16 11.2 inches 32.8 inches

315/75R16 12.4 inches 34.6 inches

395/70R16 15.5 inches 37.7 inches

17-inch rims 235/65R17 9.25 inches 29.5 inches

265/70R17 10.4 inches 31.6 inches

255/75R17 10.4 inches 32.0 inches

285/70R17 11.2 inches 32.7 inches

315/70R17 12.4 inches 34.3 inches

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