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Enoch Snyder (Esnyder)
Member
Username: Esnyder

Post Number: 90
Registered: 10-2002
Posted on Sunday, January 18, 2004 - 08:16 pm:   Edit Post Delete Post Print Post

For any of you guys running the 34x10.50 LTB(?) swamper.
I run Co-op Gripspurs now that are bias ply and have very thick rubber. When they are cold, they are extra rough because of the flat spots they get when they sit for very long. It vibrates the heck out of the truck, and although I love them off-road, I'm ready for something I can drive around town a bit easier.
How do the LTB bias plys do when starting cold? How much different do they feel from regular radial mud-terrains you've had? I know they'll run differently, be noiser, etc. but I'm specifically curious about the cold flat spot question.
Thanks,
Enoch
 

Will Cupp (W_cupp)
Senior Member
Username: W_cupp

Post Number: 300
Registered: 07-2003
Posted on Sunday, January 18, 2004 - 08:31 pm:   Edit Post Delete Post Print Post

I would think it would be about the same. Are you hell bent on bias plys?
 

Enoch Snyder (Esnyder)
Member
Username: Esnyder

Post Number: 91
Registered: 10-2002
Posted on Sunday, January 18, 2004 - 08:56 pm:   Edit Post Delete Post Print Post

I think so too, but it may depend on the number of plies. I think the Co-Ops are 10 ply or something like that, although I'm not sure.

Not really at all. I'd just as rather have an aggressive radial, but I don't know of one in that size. I'd like to get something slightly larger than the 255/85. I've been thinking 285/75, but my tire guy says he doesn't want to put them on my 7" rims, and I don't want to buy new rims, if I can even get 16x8" rims.
 

Kyle Van Tassel (Kyle)
Moderator
Username: Kyle

Post Number: 548
Registered: 11-2002
Posted on Sunday, January 18, 2004 - 08:59 pm:   Edit Post Delete Post Print Post

Anything bias is going to be that way but its the trade off... Those swampers are tough as nails. Just net very street friendly
"Blow me"
 

Nadim Samara (Discodino)
Member
Username: Discodino

Post Number: 192
Registered: 02-2003
Posted on Monday, January 19, 2004 - 03:49 am:   Edit Post Delete Post Print Post

KVT
Have seen a Cherokee on those tires in Lebanon...they didn't flex until he got them to ~3psi (no beadlocks).
FWIW I drove around offroad on my Simex on 4psi for 8 hours to "break them in" and it helped...
Radials suck :-)
 

Peter Matusov (Pmatusov)
Senior Member
Username: Pmatusov

Post Number: 1237
Registered: 09-2002
Posted on Monday, January 19, 2004 - 02:38 pm:   Edit Post Delete Post Print Post

Enoch, 285 mm is 11.2" - four inches' difference between the tire and rim width is not bad at all.
 

Enoch Snyder (Esnyder)
Member
Username: Esnyder

Post Number: 92
Registered: 10-2002
Posted on Monday, January 19, 2004 - 05:18 pm:   Edit Post Delete Post Print Post

Thanks for the thoughts, guys. I used to switch rims a lot, but I'm getting old, fat, and lazy. It looks like I'll be compromising off-road ability somewhat and go with a MT, probably the BFG. I'll sure miss the bulletproof aspect of the bias ply, though.
Peter, I was wondering the same thing. I didn't think it was too bad... Think I'll talk to a different tire guy. Kind of like going to a different doctor until you hear what you want!
Enoch

PS- As I typed this I called another tire place and they said putting the 285/75 on the 7" rim isn't "recommended", but they do it all the time. Now I need to go figure out what it does to turning radius, etc. It's not a tire size I hear much talk about here on Disco Web.
 

Peter Matusov (Pmatusov)
Senior Member
Username: Pmatusov

Post Number: 1238
Registered: 09-2002
Posted on Monday, January 19, 2004 - 06:43 pm:   Edit Post Delete Post Print Post

Enoch, putting a wider tire on a narrower rim will change the contact pattern, so you are concerned about wear, you need to play with the tire pressure.
I have 35/12.5R15 tires on an 8-inch wide rim (4.5" of difference), and it seems to be just right.
 

Enoch Snyder (Esnyder)
Member
Username: Esnyder

Post Number: 93
Registered: 10-2002
Posted on Monday, January 19, 2004 - 08:53 pm:   Edit Post Delete Post Print Post

Thanks for the tip. I've never really run wider tires before, I've always gone tall and skinny. I worry about the sidewalls getting cut a little, but I've also had some recent issues with sinking into deep, soft mud that other trucks floated across. 285s should be a decent compromise (I think they are about 33x11.50s, as you pointed out). My wife's truck has a set of them on it, so I may switch one on a rim and mount it and check it out.
ES
Enoch
 

Nadim Samara (Discodino)
Member
Username: Discodino

Post Number: 195
Registered: 02-2003
Posted on Wednesday, January 21, 2004 - 04:48 am:   Edit Post Delete Post Print Post

I'll be running the 10.5 Simex (effectively wider) and the 12.5 SXs on 10" rims...don't think I'll have an issue though.
 

Micky_dee (Micky_dee)
Member
Username: Micky_dee

Post Number: 48
Registered: 11-2003
Posted on Wednesday, January 21, 2004 - 05:04 am:   Edit Post Delete Post Print Post

ive heard of and read about this. shaving the tire. thay shave off exsevive high spots in the tire to get rid of this dreaded thump thump thmup. and i found that if you air the tire down a lot, to under ten it will help with this thumpimg. but i have never experience the shaving, just read about it.
hope that helps!
 

Clif Ashley (Cta586)
Senior Member
Username: Cta586

Post Number: 478
Registered: 04-2002
Posted on Thursday, January 22, 2004 - 05:40 pm:   Edit Post Delete Post Print Post

"dreaded thump thump thump"

I will go ahead and assume you are talking about the flat spots that develope on bias plys.

This is a problem that would be an issue, generally, only on the streets. So are you suggesting that he runs under 10psi on the street?

I also do not understand how removing tread from the tire would prevent the flat spot that naturally occurs with a bias ply tire.
 

Enoch Snyder (Esnyder)
Member
Username: Esnyder

Post Number: 94
Registered: 10-2002
Posted on Friday, January 23, 2004 - 11:32 am:   Edit Post Delete Post Print Post

Yeah, I wouldn't want to cut off one of the best things about the tires! And definitely won't be running under 10 psi on the street.
My question was really trying to see if some bias plys are worse than others for flat spots, and if so, how the LTB stacked up. I'm not sure anyone who's responded is actually running those specific tires, but the general concensus is that once you go bias, you get the flat spots.
 

Aaron Owens (Aaronowens)
Member
Username: Aaronowens

Post Number: 63
Registered: 10-2002
Posted on Friday, January 23, 2004 - 01:24 pm:   Edit Post Delete Post Print Post

Enoch, I run the 34x9 TSL Special Service tires and they flat spot after say an hour or so of sitting. How long they stay flat after moving I have found highly dependent on outside temp. If its 70 degrees or higher they will round out nicely within a 1/4 mile. If its 30 degrees, it takes maybe 3-4 miles.

I run 40psi on road and 20 or so off. Anything less on road than 40 and they require a lot more gas pedal to keep the same speed up.

Aaron
 

travis spierling (Tspierling)
New Member
Username: Tspierling

Post Number: 6
Registered: 01-2004
Posted on Friday, January 23, 2004 - 06:08 pm:   Edit Post Delete Post Print Post

You might try running super swamper ssr 285/75r16. Its not a bias ply, but a good comprimise. It actually measures about 34x11.5 I know someone running a set and never has any problems. I just purchased a set myself and am waiting to install them
 

Enoch Snyder (Esnyder)
Member
Username: Esnyder

Post Number: 95
Registered: 10-2002
Posted on Friday, January 23, 2004 - 10:14 pm:   Edit Post Delete Post Print Post

Travis-
Sweet suggestion! I had never checked them out much, although I check out the interco site a good bit. Might be just what I need. They have a sweet 35x10.50x16 which would be a great looking tall and skinny tire. Probably taller than I could deal with on my truck, though, without MORE mods. Let me know how they turn out. Will you be running wheel spacers or anything besides the American Racing 16x7s?
Aaron-
I've also noticed the difference in temperature for my bias plys. It takes a while to warm them up when its cold. Thanks for the verification that the swampers are no different. I usually run mine around 40 also, but with the tread of the co-ops I don't usually bother to air down off-road. Makes for a bumpy ride, though!
Enoch

 

Perrone Ford (Perroneford)
Member
Username: Perroneford

Post Number: 229
Registered: 02-2003
Posted on Friday, January 23, 2004 - 10:33 pm:   Edit Post Delete Post Print Post

I have the LTBs. They aren't that bad. Yes they thump, but it's perfectly liveable.

-P
 

Gordon Turner (Gordo)
Member
Username: Gordo

Post Number: 57
Registered: 07-2003
Posted on Saturday, January 24, 2004 - 01:03 am:   Edit Post Delete Post Print Post

perrone, havent seen you on the board much. Did you have to trim to run those 34s you have on your rangie. I saw it on your site and wondered if you trimmed or not. I had to trim quite a bit for my 255/85s which are 33.3 and narrow. Just curious as I would think you would have. They look good though. Gordo
 

Micky_dee (Micky_dee)
Member
Username: Micky_dee

Post Number: 49
Registered: 11-2003
Posted on Sunday, January 25, 2004 - 12:30 am:   Edit Post Delete Post Print Post

dosent shaving the tire remove the high spots? cause i thought that there where a lot of hight spots on these tires. with blem tires having more or exsevive amounts of rubber in unwanted spots? i quess like a recap. when tyhe thread overlaps? i am not sure though. like i said i read a whole article about this in some magazne some where some time. tire talk you know.....
 

Micky_dee (Micky_dee)
Member
Username: Micky_dee

Post Number: 50
Registered: 11-2003
Posted on Sunday, January 25, 2004 - 12:35 am:   Edit Post Delete Post Print Post

they said that on shaving, that they remove between 5 to 8 puonds of unwanted rubber? sound real or what. and if that is so, than i would tend to think that 5 pounds of missed place rubber whipping around would give a thumping feeling.
 

Enoch Snyder (Esnyder)
Member
Username: Esnyder

Post Number: 96
Registered: 10-2002
Posted on Sunday, January 25, 2004 - 07:57 pm:   Edit Post Delete Post Print Post

Perrone-
I was hoping you'd catch this thread. I've seen your pictures before.
Perfectly liveable sounds OK, although that is certainly subjective! The tires I have rattle the heck out of my whole truck. They have
super thick tread, though, thicker than the swampers.
I think you're from Florida, they're probably worse in colder weather!
ES

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