i just got a set of tires 39.5 15 wide 16 rim put them on and went for a drive and the truck wobled all over the road i went and looked at the tires and they are not balanced is that my problem

 

Sounds like it...

What size tires were you running on the truck before? No previous problems? No play in the wheel bearings? Shaking at highway speeds, or any speed?

 

the tires are 39.5 by 15 r16 and there was no problem before the tires
at any speed was smooth

 

So there's obviously heavy spots with the new ones. Take them to a shop and they'll give 'em a spin. I'm sure they'll at least need a balance, might need to be rotated on the wheel.

I was able to run 37s with no weights on my old truck, and somehow not have any wobble even on the highway... Good luck I suppose.

 

Used tires? If so, do a rotation and see if that helps. I've never bought new tires and have had to swap em around to find a good pair for the front.

I'd jack the front end up, grab the top of the tire and try to move it forward and back to see if there's play in the ball joints/wheel bearings.

 

bearing balljoints are good

 

depending where you live it might be hard for you to find a shop to spin balance them. closest shop to me is like 70 miles away. locals won't go above 36's.

i have a chart somewhere, but i can't find it right now. a lot of guys running big tires use copper or plastic bb's in the tire to achieve balance. the best part is you can't over balance with this trick. it makes a little noise at low speeds like in parking lots. but works pretty good up to 70+mph. generally a cup and a half of bb's in each tire should be good for 40's but like i said, you can't overdue it because it all spreads out.

 

stay away from powder balancing media like equal. i personally feel it's a scam, and most compressors have a lot of moisture in the air and it will make the powder clump and kill any balancing effect.

 

You mean this chart?
Aggressive Tire Chart

One of them at least... You can just go for as many ounces of Airsoft BBs as on the chart if shops won't balance for you. Still give them the fun of seating the bead, but Dan's right, should fix your problem...

 

yep, that's the one.

 

what front axle?

no weight what so ever on my boggers and they ride smooth-ish.


Id be willing to bet something else is going on causing these tires to "wobble" unless they are really worn crappy.

 

That's why it'd be good to find a shop to throw them on the balancer, just to give you the reading. Then you'll know if there's a heavy spot in any of the tires, and you won't be looking for problems that aren't there. Smaller shops having a slow day will usually do it for a tip, and some for free (which then end up with a 12 pack).
Rotating the tires could help if it was just the fronts worn unevenly, but even if that is the case, you'll be replacing rear axle bearings and seals in no time if they are that unbalanced.

 

oddly enough, my 40'' boggers rode great on the street. my 38.5'' sx's rode like **** even after a local shop attempted to balance them. had 35'', 36.5'', and 38.5'' groundhawgs and gumbo mudders that were fine with no balance. i'll assume he's got regular tsl's from the size. i don't have a whole lot of experience with them, but like i said the sx's were the ****tiest tires i've ever had for on road, but they were great in mud and deep snow.

 

the front is a king pin 60 and the truck is a 80 f250 no more gay beam front end

 

I never could keep lead weights on the rim lip.