Selection of tires - Page 2 - JeepForum.com

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post #16 of 31 Old 12-08-2013, 02:04 PM
streetglideok
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I have them coming in 30x9.5 here monday. They may be a bit agressive for me but they should handle the rocks here fine

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post #17 of 31 Old 12-08-2013, 04:04 PM
Charley3
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Quote:
Originally Posted by SLADE View Post
Please explain why you think an "unmodded" Jeep won't benefit from an MT tire.

You can benefit from an MT on an "unmodded" Jeep just as much as a lifted and modified Jeep can. A/T's are completely useless for some people.
It's a clue to use and fitment. ATs are easier to fit (less side lugs).

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post #18 of 31 Old 12-08-2013, 04:46 PM
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Originally Posted by Charley3 View Post
It's a clue to use and fitment. ATs are easier to fit (less side lugs).

OK.

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post #19 of 31 Old 12-08-2013, 05:42 PM
Charley3
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For example, most (perhaps all) 30 x 9.5 R15 AT will fit his stock vehicle with stock wheels just fine, but a close fit.

Will a 30 x 9.5 R15 Cooper STT fit? I think it's questionable due to large side lugs.

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post #20 of 31 Old 12-08-2013, 05:54 PM
SLADE
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So what is the difference in size/fitment between an A/T and an M/T tire?

How much more room is needed for an M/T tire compared to an A/T tire?


Some people can't sacrifice the traction and performance to settle for an A/T tire.

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post #21 of 31 Old 12-08-2013, 07:49 PM
streetglideok
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That all depends on the tire maker. I will be putting my shoes on a soon to be lifted KJ Liberty, so I'm limited on room. The 30" STT specs at 29.7", where as the all terrain Cooper AT3 with the same fitment specs at 29.3". In a 31"x10.5 the AT3 is 30.2", vs the STT of the same size spec'ing at 30.75". I nearly went with the AT3 in 31"x10.5 for the closeness in diameter, but decided I wanted something better for the rocky trails here. If the 30x9.5 had been closer in size, I may have swung with those personally. If you compare a lot of the all terrain tires vs mud terrain tires of the same tire maker, you'll see a trend, all terrains tend to run smaller than mud terrains.
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post #22 of 31 Old 12-08-2013, 11:46 PM
Charley3
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Quote:
Originally Posted by SLADE View Post
So what is the difference in size/fitment between an A/T and an M/T tire?

How much more room is needed for an M/T tire compared to an A/T tire?

Some people can't sacrifice the traction and performance to settle for an A/T tire.
An MT won't help if it doesn't fit. If a size barely fits in an AT, it might not fit in an MT.

I don't know how much more room is needed for an MT, but more room is needed.

As for traction, an AT is good for many things. An AT is better at some things, but MT is better at some things.

I don't care what tire he gets. I'm not selling tires. I just pointed out an issue to consider.

It's more likely an AT 30 would fit, but go ahead and try an MT 30. It'll be interesting to find out if they fit.

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post #23 of 31 Old 12-09-2013, 12:01 AM
Charley3
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Quote:
Originally Posted by streetglideok View Post
That all depends on the tire maker. I will be putting my shoes on a soon to be lifted KJ Liberty, so I'm limited on room. The 30" STT specs at 29.7", where as the all terrain Cooper AT3 with the same fitment specs at 29.3". In a 31"x10.5 the AT3 is 30.2", vs the STT of the same size spec'ing at 30.75". I nearly went with the AT3 in 31"x10.5 for the closeness in diameter, but decided I wanted something better for the rocky trails here. If the 30x9.5 had been closer in size, I may have swung with those personally. If you compare a lot of the all terrain tires vs mud terrain tires of the same tire maker, you'll see a trend, all terrains tend to run smaller than mud terrains.
Yes. MT usually run taller. They also run a lot wider counting the side lugs..
It'd be a lot more difficult to fit a Cooper STT 30 x 9.5 than a Cooper AT3 30 x 9.5.

Which proves I had a valid concern regarding fitment/clearance.

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post #24 of 31 Old 12-09-2013, 06:03 AM
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Yep, your concerns would be valid. I had heard it before, and when I looked into it closer for my jeep a few weeks ago, I was finding sometimes big differences. When you go with a mild tire, there isn't much difference from a 30X9.5 and a 235/75r15. And the 31" isn't much taller than the aggressive 30", just somewhat wider. So yeah if there are fitment concerns with a 30", all terrain may be the better choice.
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post #25 of 31 Old 12-09-2013, 12:10 PM
Charley3
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Quote:
Originally Posted by streetglideok View Post
Yep, your concerns would be valid. I had heard it before, and when I looked into it closer for my jeep a few weeks ago, I was finding sometimes big differences. When you go with a mild tire, there isn't much difference from a 30X9.5 and a 235/75r15. And the 31" isn't much taller than the aggressive 30", just somewhat wider. So yeah if there are fitment concerns with a 30", all terrain may be the better choice.
Yep, that height difference can affect fit/clearance, especially on stock Jeep.

The width matters too. The MT usually have big side lugs that make tire wider. Those side lugs can rub/grab sway bars and lower control arms when turning sharp left or right.

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post #26 of 31 Old 12-09-2013, 12:19 PM
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So what do you think OP?

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post #27 of 31 Old 12-09-2013, 05:00 PM
SLADE
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First time Ive seen someone prioritize size over tire performance.


If you need an MT, get an MT.

If you need an AT, get an AT.

If your that close to max tire size, be prepared to make accommodations if needed.

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post #28 of 31 Old 12-09-2013, 06:21 PM
Charley3
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Size is part of performance.

I think you should go ahead and follow your plan. Get some 30 x 9.5 R15 Cooper STT and put them on your stock WJ with stock wheels.

See what happens. Then post about it. I'd love to read about it.

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post #29 of 31 Old 12-09-2013, 07:06 PM
streetglideok
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My 30"s came in today finally. Everyone at work was gawking at how mean the look,lol. They are noticeably bigger than my P235/75r15 tires, so the lift will happen before I re-shoe her. As for need, I needed a tire that would deal with the rocks better than a mall terrain, but I also wanted as big of tire as I could fit, and be useable. 31" would probably fly in an all terrain and work better for the road, but the STT in a slightly smaller size will be better for the trails.
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post #30 of 31 Old 12-10-2013, 06:14 PM
greengo
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Choosing a tire

I just got a set of Mickey Thompson Baja STZ that are a mild snow and mud tire. They replaced the Goodyear Wranglers and come in the same size as the originals (255/75R 17)
They have a mild aggressive tread are very quiet. So far I am very impressed.
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