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Old 01-05-2005, 10:39 AM   #1 (permalink)
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Question New Cooper tire Discoverer STT?

It looks like cooper redesigned this tire....



anybody have any experience with this new tire?
it looks nice.. I saw it in one of the 4wd mags 2005 buying guide..


any comments?
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Old 01-05-2005, 10:43 AM   #2 (permalink)
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Reminds me of the MTR...
Looking at the thread pattern I'd say it will act very similarly to the MTR, so it'll rather suck in mud, be decent in rocks and rather good on street (for a MT, that is).

The overal performance will depend on the compound and sidewall, so hard to tell...
... and I wouldn't trust those sell outs in "pay per review mags"
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Old 01-05-2005, 11:00 AM   #3 (permalink)
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Quote:
Originally Posted by MudKick
Reminds me of the MTR...
Looking at the thread pattern I'd say it will act very similarly to the MTR, so it'll rather suck in mud, be decent in rocks and rather good on street (for a MT, that is).

The overal performance will depend on the compound and sidewall, so hard to tell...
yeah.. I hear ya... I have a large daily commute so I need a good all around tire.. if they act close to the MTR that's fine.

Quote:
Originally Posted by MudKick
... and I wouldn't trust those sell outs in "pay per review mags"
they didn't review it... they just gave a list of just about every MT tire available... so I don't think it was very biased .
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Old 01-05-2005, 11:45 AM   #4 (permalink)
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I checked em out at the local dealer a month ago and the sidewalls didnt feel as thick as the MTRs, but they felt a lot thicker than the BFG MTs. He only had a set of 31s and also said they didnt have a listing on 35s yet. They looked closer to the Toyos than the MTRs to me. No one has em on their vehicles around here yet.
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Old 01-05-2005, 12:41 PM   #5 (permalink)
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Check the similarity here too, kinda interesting. http://www.toyo.com/tires/tire_lines/off_road/opmt.html
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Old 01-05-2005, 12:55 PM   #6 (permalink)
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Yes, they are a completely new design. The tread compound is the same as the old. They run a 3 ply carcass now vs. the old style 2 ply carcass. I was surprised, as most places that build the 3 ply carcass (like BFG AT/MT) run 3 thinner plys that arent much thicker than the typical 2 ply, but these run some pretty thick cord. Should be fairly tough compared to other typical radial street MT's. Im guessing from the tread design they will work about like most other radial MT's in the mud- in other words they wont be that great. Although, the tread is supposed to be alot quieter on the street vs. the old style. Sizes are very limited right now- for some reason we are still building the old style STT along side the new ones. There is supposed to finally be a 37" coming out in these... more news as it develops.
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Old 01-05-2005, 01:47 PM   #7 (permalink)
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Quote:
Originally Posted by 45acp
Although, the tread is supposed to be alot quieter on the street vs. the old style. Sizes are very limited right now- for some reason we are still building the old style STT along side the new ones.
The old ones were great tires, but once they got below 1/2 tread, they were indeed among the loudest MT's out there. At least they didn't do anything squirrelly (like Uniroyal Laredo MT's for example), and they out-lasted pretty much anything else. The new-style in 255/85R16 is likely to be the next tires that go on my towrig, assuming they still make that size (got a call from some chick at Cooper saying they didn't have that size planned right now, but I'm not sure if she just meant not SOON).

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Old 01-05-2005, 02:16 PM   #8 (permalink)
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The 255/85's dont sell too well.... i wouldnt be surprised if we gave up on that size. They were gonna be my next tow rig tire, but pops got tired of waiting (i co-own a dually with my father) and slapped some E-rated BFG MT's on it. I would have really liked to try out the new STT's as ive been thinking they would make a really nice tow rig tire.

And yes, the old STT's are fawkin horrible below about 60%. Just as loud as a Swamper only higher pitched. The new tread design should/will cure that problem.
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Old 01-05-2005, 04:59 PM   #9 (permalink)
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I talked w/ Cooper yesterday anda local dealer today

The 37's as 45acp has stated are now available, have a thick 3 ply sidewall and are the same compound as the older STT's
Only available in 17's for now, but for the price I may just find me some H2 rims

Local dealer can have them in a week and price is ~$250 per tire INCLUDING tax, mount & balance
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Old 01-05-2005, 05:05 PM   #10 (permalink)
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Good to see the 37's are out now. I didnt know when they would be ran, because we dont build 37's here.... they are built in Findlay.
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Old 01-05-2005, 07:47 PM   #11 (permalink)
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Quote:
Originally Posted by Mikronized
It looks like cooper redesigned this tire....

Yeah, looks that way

/forum/general-4x4-discussion/304245-new-cooper-stt-design.html
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Old 01-06-2005, 06:18 AM   #12 (permalink)
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Quote:
Originally Posted by 45acp
The 255/85's dont sell too well.... i wouldnt be surprised if we gave up on that size. They were gonna be my next tow rig tire, but pops got tired of waiting (i co-own a dually with my father) and slapped some E-rated BFG MT's on it. I would have really liked to try out the new STT's as ive been thinking they would make a really nice tow rig tire.
Yeah, kind of an oddball size, but it's a good one for unlifted GM's as they fit the stock rims & don't rub (unlike 285's, which are same diameter, but wider). I had one set in this size in the old style & there was one issue with these. On this size & I think on 235/85's, there is a rib between the centermost lugs. It connects the lugs below 1/2 tread. So, once you get below 1/2 tread, the two center lugs kind of become one. They don't do this on other sizes, so not sure why they did on these. I only got 32,000 miles on mine before they got slick in the middle & rather than groove out that rib, I tossed 'em. Was a shame 'cause there was tons of tread left. I always got at least 45-50k out of the other sizes I ran on fullsize trucks, & 60,000+ on Jeeps. But, the 255/85's were the best snow tires I ever ran.

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Old 01-06-2005, 10:35 AM   #13 (permalink)
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I had some of the older ones way back in the day. They were a hard rubber so they didn't like to stick if wet at all but they ran for ever before they were done. I think they look like the Toyo myself.
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Old 01-20-2005, 05:32 PM   #14 (permalink)
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Quote:
Originally Posted by 45acp
The tread compound is the same as the old.

Just refound this while searching for something else and got re-confused by this decision. Why would Cooper put the time/money into developing such a kick-ass tread design and then still use the same old hard-as-hell, won't-grip-rocks-worth-shit (or slick roads) rubber compound If they combined this tread design with a rubber compound similar to what is used in MT/R's..... that would be a hell of a tire. Tell your superiors I'm willing to loose 10k miles worth of tread life for the ability to grip rocks
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Old 01-21-2005, 06:46 AM   #15 (permalink)
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Originally Posted by Indyguy
Tell your superiors I'm willing to loose 10k miles worth of tread life for the ability to grip rocks
But, not everyone is. I never had any issues with wet road traction, and don't give a schit about rocks. So, I liked the fact that the tires lasted longer than everyone elses & that the stiff tread didn't squirm around on pavement. In other words, it's perfect for my towrig

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Old 01-21-2005, 07:10 PM   #16 (permalink)
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Quote:
Originally Posted by Indyguy
Just refound this while searching for something else and got re-confused by this decision. Why would Cooper put the time/money into developing such a kick-ass tread design and then still use the same old hard-as-hell, won't-grip-rocks-worth-shit (or slick roads) rubber compound
I could tell you..... but maybe i shouldnt tell you.
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Old 01-21-2005, 09:57 PM   #17 (permalink)
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I could tell you..... but maybe i shouldnt tell you.

Maybe you shouldn't..... but I'd appreciate if you did.
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Old 03-11-2005, 04:46 PM   #18 (permalink)
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I stopped by a dealer last Saturday to check on the SST for my Frontier and best they could do at the time is to find out that they were not at the warehouse they order through. Called me back a few days later and said that they found out that my size (265-70/17) was on national backorder for about 2 or 3 months and estimated the price at about $150.

Backorder wise, I think this is likely to be accurate information. Price wise, I suspect that this is probably on the high side.

Anyone have some trail and road experience with these SSTs yet?

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Old 03-11-2005, 05:08 PM   #19 (permalink)
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I've asked a few places about the STT in 35x12.5R15 and no one can give me a straight answer about it...

This damn tire's been out on the internet forever and no one's actually gotten one yet. WTF.
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Old 03-11-2005, 06:54 PM   #20 (permalink)
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i got some 30x9.50's on my sidekick! haven't wheeled them yet but the ride good on the hiway!
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Old 03-12-2005, 04:24 AM   #21 (permalink)
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It was released way too early. The new STT and the new Mickey Thompson MTZ/ATZ share the same carcass, so that makes matters even worse as far as keeping up with orders. The stupid tire was in magazine ads before we were even putting them on the test wheel in the lab. Sizes are still limited but 33x12.50x15's and 35x12.50x15's are coming. When? I have no idea... basically the ad's first started running in mags as we were designing the tire. Sorry.
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Old 03-12-2005, 07:25 AM   #22 (permalink)
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Aw darn... Sure sounds like a screwy STT supply situation and an extended rollout of sizes. Am pretty sure some business manager needs to be kicked in the knees or elsewhere for creating this.

Chet... Sounds like you're the field test! An unpaid one at that! hehehe...

45... Thanks much...

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Old 03-25-2005, 09:26 AM   #23 (permalink)
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Hey there Chet...

You made it offroad with your STTs yet? How things turning out with them?

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Old 03-25-2005, 10:32 AM   #24 (permalink)
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Im waiting for either a 315/70/17 or a 35x12.50x17 to come out in the STT for the tow rig....
Scott
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Old 06-02-2005, 09:03 AM   #25 (permalink)
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Bringing this back up to see if anyone's had more experience with these tires. Mainly is the rubber super hard? Or is it comprable to the MTR?

John
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