List of Available 30 x 9.5 R15 tires for Daily Driver XJ, ZJ, or TJ - Page 3 - JeepForum.com

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post #31 of 85 Old 10-14-2013, 11:21 AM Thread Starter
Charley3
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Quote:
Originally Posted by Transy416 View Post
Just got the Cooper AT3's in 30 x 9.5 for my stock Cherokee and they worked great for me on mud, dirty steep hills, going over large rocks, etc. also quiet on the road. Only issue I noticed is some bumping in the rear if I was driving a little fast on gravel roads with potholes. This was with my hatch area full of gear so extra weight, and my shocks are original at 120,000 miles. Also noticed my rear bump stops are gone, so perhaps this is the problem (?) since these are slightly taller tires.
The stock shocks were never good when new, and they wear out by 30K to 40K miles. So your shocks are completely useless. I suggest get some Monroe Sensitrac shocks ASAP.

The stock rear springs are often wearing out by 30K to 50K depending on use. At your mileage, and with worn out shocks, and no bumpstops, you're rear springs are probably ruined. I think you need new rear springs. Get Crown (like Quadratec sells) if you want stock replacements. Crown parts are excellent quality and prices IME. If you want an even better spring and a slight lift, get OME springs.

Obviously having no bump-stops, worn out shocks, probably shot rear springs, and cargo weight is your problem.

I have some new bump-stops front and rear that I'll mail you for free, if you pay for postage. I MIGHT have some used, slightly worn, but still in fairly good shape, FREE rear stock tow package springs I can give you. If my cousing hasn't already grabbed them from my parts pile for his mother-in-law's XJ.


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post #32 of 85 Old 10-14-2013, 04:11 PM
Transy416
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Thanks! Will pm you.
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post #33 of 85 Old 10-14-2013, 04:32 PM
Transy416
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BTW, my tire installer recommended 38 PSI, which seemed pretty high to me. That's quite a difference from 28 front and 26 rear. What about when towing? I suppose the 38 may be appropriate then?

Posted by Charley3....
Here are cold tire pressures I find work best: 27 psi front, 24.5 psi rear at air temp around 55F to 60F. If air temp is 67 F to 72F, I want 28 psi front, 25.5 psi rear. If air temp is 79F or higher, I want 28.5 to 29 psi front, 26 to 26.5 psi rear.

Last edited by Transy416; 10-14-2013 at 04:57 PM.
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post #34 of 85 Old 10-14-2013, 04:44 PM Thread Starter
Charley3
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Quote:
Originally Posted by Transy416 View Post
BTW, my tire recommended 38 PSI, which seemed pretty high to me. That's quite a difference from 28 front and 26 rear. What about when towing? I suppose the 38 may be appropriate then?
Add 1 psi to rear tires for every 100 lbs of cargo in rear cargo area. That's an approximation. Adjust from there.

For example, if you had 200 lbs of rear cargo, run 28 psi rear tires, but also pay attention to contact patch, sidewalls, ride quality, and handling; and then adjust psi as necessary.

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post #35 of 85 Old 01-18-2014, 05:04 PM Thread Starter
Charley3
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I just saw a local XJ with new 30 x 9.5 R15 Multi-Mile Wild Country XTX Sport LT on it.
They are really good looking ATs with a good mix of small and larger tread blocks, smaller and larger voids, and lots of sipes.

This is a new tire design I haven't seen before. Looks good to me. It's available in 30 x 9.5 R15.

Looks like a really good AT tread design to me. Here is the Multi-Mile webpage about it. http://www.multimiletires.com/tires/...ication=SUV-LT


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post #36 of 85 Old 01-21-2014, 08:04 PM
Dozzer295
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I have a set of Hankook Dynapro ATMs on my 1993 ZJ and I love them driven in all sorts of terrain and they have yet to let me down even once. This is very important to me mostly due to the fact that I am a Volunteer firefighter and a member of my counties Rescue Squad. So it doesn't matter what it is doing outside when the pager goes off I've got to go. I even drove my the long trip up to upstate New York to visit my family during Christmas last year and was hit by a few snow storms that were bordering blizzards and once again the ATMs took the challenge head on and never failed me. When they eventually wear out I will be buying another set.
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post #37 of 85 Old 02-01-2014, 11:24 PM Thread Starter
Charley3
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Does anyone have any other 30 x 9.5 R15 tires to add to this thread that aren't already in the OP? If so, please post it, and then I'll add it to the OP.

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post #38 of 85 Old 02-12-2014, 01:19 PM Thread Starter
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http://www.jeepforum.com/forum/f15/c...onomy-2097065/

This other thread discusses tire size and gas mileage. Read it and you'll see more reasons to like 30s, IMO.

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post #39 of 85 Old 03-16-2014, 01:38 AM Thread Starter
Charley3
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I'm still adding 30" AS, AT, and MT tires to the OP. I just added a few tonight. So recheck it once in a while if you are interested in 30 x 9.5 R15 tires.

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post #40 of 85 Old 04-26-2014, 08:48 PM Thread Starter
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One cool thing about 30 x 9.5 R15 tires is that you can often buy used tires cheap and get good tires for low cost.

This is because Jeepers and Ford Ranger guys often use this tire size for a while, and then lift and buy larger tires later. Then they sell their 30 x 9.5 R15 cheaply. Often they are in good shape with lots of tread left. I've seen some sell with less than 5000 miles on them. I remember one set that only had around 1500 miles on them. More often they'll have 10,000 to 30,000 miles on them, but still good tires.

The price is certainly right. Sometimes you can get nearly new tires for a fraction of the cost of buying new.

Check the classifieds section of this forum, and any Jeep or Ranger forum, and you'll usually find one or more good deals available. Likewise check Ebay and Craiglist for used 30 x 9.5 R15 tires too.

If you use 30 x 9.5 R15 tires, you can sometimes buy slightly used tires for a song. Othertimes moderately used tires. You can save a lot of money on tires this way.

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post #41 of 85 Old 08-30-2014, 12:58 AM Thread Starter
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Here's a new size (or new to me).

235/75R16 is approx 29.75 x 9.3 R16 (actual size). I'd like that size if I was regeared for it.

I think it might fit a stock XJ.

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post #42 of 85 Old 09-01-2014, 06:23 PM
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Try this... it lists every tire close to the size you want.

http://tire-size-conversion.com/

Click "Go back to calculator".

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Back when ALL Jeeps were Government Issued.
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post #43 of 85 Old 09-02-2014, 03:01 PM Thread Starter
Charley3
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Quote:
Originally Posted by billiebob View Post
Try this... it lists every tire close to the size you want.

http://tire-size-conversion.com/

Click "Go back to calculator".
I'm familiar with that tool.

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post #44 of 85 Old 09-02-2014, 05:53 PM
brunolambert
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Quote:
Originally Posted by Charley3 View Post
Here's a new size (or new to me).

235/75R16 is approx 29.75 x 9.3 R16 (actual size). I'd like that size if I was regeared for it.

I think it might fit a stock XJ.
What do you mean regeared for it? Don't you have 30 tire anyway?

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post #45 of 85 Old 09-02-2014, 06:54 PM Thread Starter
Charley3
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Quote:
Originally Posted by brunolambert View Post
What do you mean regeared for it? Don't you have 30 tire anyway?
I have a tire that's named size is 30 x 9.5 R15, but it's manufacturer stated actual unloaded height at max pressure (50 psi) is 29.3" tall.

Most 235/75R15 load C tires are around 29.7" to 29.8" tall for their manufacturer stated actual unloaded height at max pressure (around 50 psi).

Of course I don't use max pressure in my 30's. I use 27.5 psi front, 24.5 psi rear. So my actual unloaded tire height is less than the manufacturer stated height.

My point is this: My 30 x 9.5 R15 have a stated height of 29.3". The 235/75R16C is 0.6" taller than that. I.e - half a size taller.

Since my 30 x 9.5 R15 are as tall as I'd want with stock gears (3.55), and I'd even like to (ideally) regear for those tires on mountain highways, for any tire taller than 29.5" I would defineatley want to regear.

For a 29.7" to 30" manufacturer stated actual diameter, I'd want 3.73 gears.

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