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post #1 of 8 Old 08-12-2010, 05:10 PM Thread Starter
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Tire pressure?

What tire pressure is everyone running for daily driving with 35x12.50/20s. I have the Nitto Trail grapplers. I am having a problem with getting them balanced. It is rough enough to make your voice jump between 40 and 50. The local tire shop says they are dead on with their balancer. They suggested balancing beads. Anyone using these? Didn't want to try them without knowing something about them and if they mess up the tires. I do have 1/4" spacers all the way around, bnut didn't think they would cause this. I may take it somewhere else tomorrow to get a second opinion. When I checked the pressure in the tires, I found bpth rear around 72psi. The passenger front around 70psi. and the driver front around 58psi. I let the air out to 58psi all the way around. It seened to help a little. Any suggestions?

'08 F250 Crew Cab King Ranch 6.4L (White)
4" Zone Offroad Lift
Spartan Tuned
Spartan TCM
DPF/CAT Delete
EGR Delete
ARP Head Studs
S&B
MBRP
35x12.50x22 TOYO M/T
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post #2 of 8 Old 08-13-2010, 06:19 AM Thread Starter
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Well, going to try the balancing beads. Putting 6oz. Pack in each tire. Hope this fixes the problem. I'll post the results.

'08 F250 Crew Cab King Ranch 6.4L (White)
4" Zone Offroad Lift
Spartan Tuned
Spartan TCM
DPF/CAT Delete
EGR Delete
ARP Head Studs
S&B
MBRP
35x12.50x22 TOYO M/T
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post #3 of 8 Old 08-13-2010, 06:40 AM
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I've got the same tires on my factory 20s, and they balanced out very well according to discount tire. Maybe you should take it to one of the bigger chain places or a truck stop to see. I've never heard of balancing beads or any of those things actually working. If you think about it, those places are used to doing smaller tires, but the truck stops would do bigger stuff....
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post #4 of 8 Old 08-13-2010, 07:04 AM Thread Starter
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They mounted and balanced the first time. I brought it back the next day because of the ride bouncing everywhere around 40-50mph. They then said a couple of the tires were out 3oz. or so. This is 1 day after supposedly balancing the first time. Now they are saying they are balanced according to the balancer. Still have enough bouncing at 45mph to make your voice jump when talking. Already bought the beads, and they are putting them in now. If this doesn't work, I'm going somewhere else. On top of everything, they damaged one of my KR center caps. The manager said just to get another one and bring him the invoice. Man...always somethin

'08 F250 Crew Cab King Ranch 6.4L (White)
4" Zone Offroad Lift
Spartan Tuned
Spartan TCM
DPF/CAT Delete
EGR Delete
ARP Head Studs
S&B
MBRP
35x12.50x22 TOYO M/T
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post #5 of 8 Old 08-13-2010, 09:12 AM
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I had a local discount tire put 35s on my dodge and they bounced pretty good. I took them off the next day and put them on my balancer at work and they were a good 12 oz off on a few. I've had customers get tires from there and they were far off too. After I balanced my tires they rode smooth for 20k miles till I got rid of the truck for my ford.
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post #6 of 8 Old 08-13-2010, 09:19 AM
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...if your spacers arent hub centric you will have that exact problem

past trucks...
72 F350 2wd 390/auto
85 C10 4x4 (first & last chevy)
86 F150 2wd 300/4 spd
75 F100 4x4 460/auto & 38" Hawgs
77 F250 highboy 4x4 400/4 speed
76 F350 4x4 390/4 speed 6" lift 38" Hawgs
89 Eddie Bauer Bronco
79 Bronco 460/auto 35" Swampers
93 Lightning with KB 2.2
01 supercrew 2wd 5.4 liter
01 F250 Platinum 7.3 diesel 6" icon 35" procomps
...and currently a 75 F100, waiting for a 6.0 heart
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post #7 of 8 Old 08-13-2010, 12:01 PM Thread Starter
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Just 1/4" spacers. Will they cause that? Anyway, the truck is at a different shop now. They are dismounting the tires, removing the beads, re-mounting and balancing. They said they could do it. I know people with bigger tires go them as well. A friend of mine had 44" tires balanced there. They said the spacers would not cause my problem. How do you know if they are hub-centric? I did not ask when I bought them.

'08 F250 Crew Cab King Ranch 6.4L (White)
4" Zone Offroad Lift
Spartan Tuned
Spartan TCM
DPF/CAT Delete
EGR Delete
ARP Head Studs
S&B
MBRP
35x12.50x22 TOYO M/T
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post #8 of 8 Old 08-13-2010, 01:59 PM Thread Starter
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Finally...Got an answer from the second tire shop. Used a road force balancer and found that passenger side rear tire was out of round. Called Discount Direct...I had to purchase another tire to swap out. They e-mailed a shipping label to send back the deformed tire once the new tire arrives and is swapped out. They will re-emburse my card acct. when deformed tire is recieved. Oh. And I removed the spacers. It helped alot. Evidently they are not hub-centric. So after $107 for mounting/balanciing the first time. $45 for spacers. $30 for balancing beads (which are removed now). $50 for second tire shop to dismount, remove beads, mount/balance, and tell me what was wrong(had someone sweet talk them for that deal). I now have a little piece of mind. Now just waiting for my new tire to arrive (maybe Wed. or Thurs.). The spacers were not much, but did make a difference in looks and rubbing on the trailing arm. I guess I need to find a set of hub-centric spacers. Where can I get a set?

'08 F250 Crew Cab King Ranch 6.4L (White)
4" Zone Offroad Lift
Spartan Tuned
Spartan TCM
DPF/CAT Delete
EGR Delete
ARP Head Studs
S&B
MBRP
35x12.50x22 TOYO M/T

Last edited by Down2Ride; 08-13-2010 at 02:04 PM.
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