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Old 04-01-2012, 12:32 AM   #61
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Old 04-01-2012, 12:36 AM   #62
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Alright, The new wheel/tires don't come close to touching the spare tire stops. There is a pretty good gap there. It is tight though with no rattles.

Do people recommend the Daystar Tailgate Bump Stops? And are they plenty long enough for the 3.75 bs of the MB's? If too long are they easy to trim. The way they are designed they sort of look like they aren't to trim friendly.


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Old 04-01-2012, 07:55 AM   #63
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Quote:
Originally Posted by rics1997
Alright, The new wheel/tires don't come close to touching the spare tire stops. There is a pretty good gap there. It is tight though with no rattles.

Do people recommend the Daystar Tailgate Bump Stops? And are they plenty long enough for the 3.75 bs of the MB's? If too long are they easy to trim. The way they are designed they sort of look like they aren't to trim friendly.
I have the MB TKO's with 33x12.50x15 Duratracs. I also have the Daystar bump stops. Mine fit and didn't need to be trimmed. Even if they're a bit too long, they're just squishy enough with that big tire pushing on it, that they don't have to be trimmed.
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Old 04-01-2012, 08:07 AM   #64
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Here are pics of mine.

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Old 04-01-2012, 08:54 AM   #65
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Originally Posted by LitleMs
Here are pics of mine.
Nice. So they just squished down? They looked like they're about just right to do that, but I haven't put mine on yet.

Truthfully, these DuraTrac 33s on 15" wheels are so light I'm not convinced the bumpstops are necessary, but they're like $15, so might as well toss'em on.
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Old 04-01-2012, 09:12 AM   #66
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All done it is awesome







Wow! That looks really good man. Enjoy!
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Old 04-01-2012, 09:14 AM   #67
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Originally Posted by rics1997 View Post
Alright, The new wheel/tires don't come close to touching the spare tire stops. There is a pretty good gap there. It is tight though with no rattles.

Do people recommend the Daystar Tailgate Bump Stops? And are they plenty long enough for the 3.75 bs of the MB's? If too long are they easy to trim. The way they are designed they sort of look like they aren't to trim friendly.

They trim very easily, just need a utility knife. Make sure you cut em about 3/8" longer than your measurement, so the spare will snug up against them really well.

EDIT: Like LitleMs said, you probably won't need to trim yours @ all. Mine were w/a bs of 4.5".
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Old 04-01-2012, 12:04 PM   #68
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Quote:
Originally Posted by MTH

Nice. So they just squished down? They looked like they're about just right to do that, but I haven't put mine on yet.

Truthfully, these DuraTrac 33s on 15" wheels are so light I'm not convinced the bumpstops are necessary, but they're like $15, so might as well toss'em on.
Yep, they just squished down. Don't ya just love my high-tech choice of words? lol
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Old 04-01-2012, 06:50 PM   #69
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What psi are you guys running in your 33 Duratracs???
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Old 04-01-2012, 06:56 PM   #70
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What psi are you guys running in your 33 Duratracs???
I'm at 35 psi. A touch high, but the mpgs are good, it handles fine, and my TPMS stays quiet.
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Old 04-01-2012, 07:10 PM   #71
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I'm at 35 psi. A touch high, but the mpgs are good, it handles fine, and my TPMS stays quiet.
35?!?!?!? kidding...kidding.
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Old 04-01-2012, 07:21 PM   #72
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I had a bid discussion on this too with my local shop that did my tires. The max PSI is 35psi but the shop insisted that I would be better running mine at 35psi. it is riding very well at that but I really am thinking of lowering it to 32 psi. 35psi will be better range for gas mileage but may cause center wear IMO. I am thinking 32 PSI is a good compromise to keep the pressure up for better MPG yet get a little better tread wear
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Old 04-01-2012, 07:21 PM   #73
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Quote:
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What psi are you guys running in your 33 Duratracs???
I'm interested in this answer too.
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Old 04-01-2012, 07:29 PM   #74
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IMO the Duratrac 33X12.5X15 (does not apply to any other duratrac size) should be in a range of 28 to 35 psi. 28-29 would be the smoothest ride yet may decrease MPG's slightly and may cause outer tread wear. 30-32 would be the mid range best for tread wear. 33-35 will make the tire a little stiffer but with this tire it is hard to notice and will give slightly better gas mileage but may also cause center tread wear.

The 33X12.5X15 is the only one in the Duratrac line that has a 35PSI max rating. All other Duratrac should be run at 35psi minimum
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Old 04-01-2012, 07:29 PM   #75
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I've run them at 35, 33, 32, 30, and 28. The worst MPG was at 28 and the jeep felt like it had more dead weight. Anything above 33 and when they heat up to 35 or over your gonna feel the rougher ride and see the wear in the middle. I'm getting the very best wear and fuel economy balance with all four at 32 cold. Check them regularly and drive slowly. It's a very comfortable ride at this psi.
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Old 04-01-2012, 07:33 PM   #76
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Well just put mine on Sat and damn it is rough. Got from DTD already on the wheels. Going to check paid tomorrow before work. Wanted to know what every one was running before I go tomorrow.
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Old 04-01-2012, 07:35 PM   #77
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32psi it is.
Thanks.
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Old 04-01-2012, 07:55 PM   #78
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Quote:
Originally Posted by ESP
I've run them at 35, 33, 32, 30, and 28. The worst MPG was at 28 and the jeep felt like it had more dead weight. Anything above 33 and when they heat up to 35 or over your gonna feel the rougher ride and see the wear in the middle. I'm getting the very best wear and fuel economy balance with all four at 32 cold. Check them regularly and drive slowly. It's a very comfortable ride at this psi.
Mine are 30 now.....going to bump 'em up to 32 now. Thanks guys!
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Old 04-01-2012, 07:59 PM   #79
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Quote:
Originally Posted by rics1997
I had a bid discussion on this too with my local shop that did my tires. The max PSI is 35psi but the shop insisted that I would be better running mine at 35psi. it is riding very well at that but I really am thinking of lowering it to 32 psi. 35psi will be better range for gas mileage but may cause center wear IMO. I am thinking 32 PSI is a good compromise to keep the pressure up for better MPG yet get a little better tread wear
Same story here.

The JKU is hauling around a few hundred extra pounds though, so I can say that 35 psi rolls great. Really good ride. It might wear a little extra in the center, but not as bad as I'd expect from a 2 door.
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Old 04-01-2012, 08:09 PM   #80
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Same story here.

The JKU is hauling around a few hundred extra pounds though, so I can say that 35 psi rolls great. Really good ride. It might wear a little extra in the center, but not as bad as I'd expect from a 2 door.
Very true, didn't even think about that. You could certainly justify running them at 33 or a little higher for the JKUs. These duratracs are pretty much in destructible and even though we run them a little higher and they may wear more in the center, we are benefiting from better fuel economy every time we drive them. Plus it just means we can all get those 35s sooner!
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Old 04-01-2012, 08:16 PM   #81
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Very true, didn't even think about that. You could certainly justify running them at 33 or a little higher for the JKUs. These duratracs are pretty much in destructible and even though we run them a little higher and they may wear more in the center, we are benefiting from better fuel economy every time we drive them. Plus it just means we can all get those 35s sooner!
:rofl;

Let me ask you this: Where are yours wearing? Does your wear pattern go all the way across on the surface of the tires including the edge tread pattern, or is it more on that center tread pattern? I'd say 90% of my wear is on the center tread pattern--in other words, pretending the tire is a true 12.5" wide, the vast majority of my wear is probably on the center 10".
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Old 04-01-2012, 08:19 PM   #82
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Yep I'm thinking the wear is pretty much the same for me running them at 32 and you at 34-35. Its mostly 10 like you say. I've lowered it down as mentioned to around 28-30 and it really felt different. Much more sluggish and resistant when coasting and getting up to speed. I'm thinking 32-33 tops is perfect for these on a JK and 33+ on a JKU is gonna get the best results.

Now back to checking DTD and tirerack to see when those BFGs get back in stock.
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Old 05-03-2012, 08:54 AM   #83
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I am about to install my setup today, the Duratracs came filled at 35 psi. So for a JKU, 33 or 34 psi is best?
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Old 05-03-2012, 09:58 AM   #84
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Rics, your Jeep look awesome man, great job. The more I look at photos of 2-door Jeeps, the more I feel that 33" is the best size tire. 35" look too big for a 2-door IMO. 35's are more suited for a 4-door.
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Old 05-03-2012, 01:31 PM   #85
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