Static vs. Dynamic Tire Balancing - 37" tires

[evantwheeler]

Just put new 37" cooper AT3's on my 2500 (17" wheels). So much quieter than the 35" Toyo R/T's they replaced, but they are horribly out of balance compared to the old wheel/tire combo (20" wheels). I opted to go with the dynamic balance beads inside the tire, at the recommended weight for the tire size. I think it was 8oz of beads per tire. Looking on advice for next step to get these things to balance out.

Do I add more beads if 8oz didn't do it? Can too much hurt?

If I want to go to a static weight on the wheel (stick-on), do I need to dismount the wheels and remove all of the beads from inside the tire?

What say the experts or experienced with big tires?

 

[LargeOrangeFont]

You dont need to dismount, just pop one of the beads off (inner probably), reach in and pull out the beads. Then reinflate to reset beads, and balance.

 

[SBMech]

Guidelines are no more than 6 oz per tire. Any modern balancer is "dynamic" meaning it rolls it on a shaft to check balance. Static is like a bubble balancer...not even acceptable anymore except for like tractors and farm equip...even then lol.

Take the weights off, and mark the tire, break the bead off and recenter it 180deg from where it was, try again.

If you can't get closer than that, the tire is defective.

I just read your post again... beads inside the wheel? You mean weights glued to the inside of the rim vs weights stuck on the outer bead?

Dynamic balancing

For more complex cases of tire imbalance, dynamic balancing is a technique using spinning computer balancers to measure the tire on all three axes. The mechanic places a fully assembled wheel and tire on a machine and rotates it at speed ranging from 16-25 km/h (10-15 mph) to 88-96 km/h (55-60 mph).

I have never heard of putting beads inside a tire.

 

[SBMech]

Hmm. Just read up on "Dyna Beads"

FYI that is NOT "Dynamic Balancing"....I don't believe the hype personally, and disagree with the principal.

 

[Rajobigguy]

First hings first. You need to make sure that the tires are true. There aren't many shops around that due tire truing anymore but some of the shops that sell larger off road tires still do it and it is importation. If you have to mount the tire in different locations to get the balance right then you have a tolerance stack-up that is unacceptable, check to make sure that that the wheel itself isn't inherently unbalanced. Any shop with a computer balancer can do this by spinning the rim without the tire mounted. If you have a badly balanced rim you should replace it.

 

[Flying_Lavey]

Never use beads. They are garbage and only KINDA work on really heavy sidewall tires (like tractor trailer type heavy). Most tires have an indicator for where the stem should be aligned for most optimal weight distribution (usually a small colored dot, yellow indicating heavy part of the tire and red indicating lightest). If those aren't aligned, you're already working from a disadvantage. Take it to a reputable shop that has calibrated computer balancers. Insist they clock the tire to reduce the amount of weights and do not allow them to use a hammer on (don't want to fuck up a new wheel). A good tire tech and a good balancer can get tires, even 37" off-road tires, balanced to the point where only a couple ounces at most is needed

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[DEEZNUTS]

First hings first. You need to make sure that the tires are true. There aren't many shops around that due tire truing anymore but some of the shops that sell larger off road tires still do it and it is importation. If you have to mount the tire in different locations to get the balance right then you have a tolerance stack-up that is unacceptable, check to make sure that that the wheel itself isn't inherently unbalanced. Any shop with a computer balancer can do this by spinning the rim without the tire mounted. If you have a badly balanced rim you should replace it.

Picked up some falkens last year for the commuter car. Had one that wouldnt balance out at all, no mater what they did. It was horrible. Finally forced the shop to check true, sure enough that effing tire was square. Shop warrantied it and all is good.

 

[WhatExit?]

I'd only use a shop with Hunter road force balancers

Wheel Balancers | Hunter Engineering Company®

Hunter offers a full-line of wheel balancers that provide the fastest and most efficient balance through patented software and exclusive features. Learn more.

www.hunter.com

 

[SoCalDave]

^^^^This

 

[SBMech]

Just so you know, it's easy to get even big offroad tires balanced pretty close if you spend the time.

I got my buddies 37" K02's for his Raptor to 2oz or less each wheel.

 

[jones performance]

ditch the beads. have em balanced the old school way.

 

[evantwheeler]

Thanks to the RDP braintrust. On the hunt for a local shop with a Hunter machine and a tech that knows how to use it (I'm not in SoCal).

 

[Universal Elements]

Beads suck. Had them on my F-450 with 19.5’s. Shitcanned them. You want the joB done right, take the truck to one of Petes Road Service locations. They were the only ones that were able to get it right. Truck shook really bad. May want to call them and see what they Say.

Locations - Pete's Road Service, Inc.

10 SOCAL LOCATIONS STOP BY TODAY!

www.petesrs.com

 

[monkeyswrench]

I've only had luck with the beads on big tires...kind of as pointed out above. By big, I mean 44" and above. My theory, no real proof as I'm not that bright, is the tire speed was slower. At a good clip, the tire was just loping along. That, or sidewall height, but haven't had the need to try a 37" tire on a 10" rim

With a lot of the current aftermarket truck wheels, they have been out of balance on their own. As mentioned, break them down again, and spin the tire 180, and try again. Sometime there, to another 90 degrees, and then get it down to a few ounces. Basically, use the tire unbalance to offset the rim unbalance.

 

[ibelio]

i will sell you the machines on car spin balancer and tire truer dont use anymore they are hunters

 

[Rajobigguy]

i will sell you the machines on car spin balancer and tire truer dont use anymore they are hunters

Curious, how much you want? I don't really need them but if the price is right.

 

[ibelio]

1k for both?

 

[HPBoats83]

I'd only use a shop with Hunter road force balancers

Wheel Balancers | Hunter Engineering Company®

Hunter offers a full-line of wheel balancers that provide the fastest and most efficient balance through patented software and exclusive features. Learn more.

www.hunter.com

So I’m actually going through this right now with 2 sets of tires that wouldn’t road force to specs. On this “replacement” set I have I’m currently at 54#, 41#, and two around 20#. I’m now forcing the manufacturer to take them back and I’m going to do a major name brand like Toyo or Nitto. This receipt shows the first set.

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[pronstar]

The Toyo, Nitto and Yoko large tires I’ve run, have needed very little weight to balance.

I think their QC is very good.
YMMV


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[Pivot]

My toyo 35s with 20” methods stay balanced forever. Smooth as can be.