iwishiwasbigger
New member
First a bit of background.
I bought I 2017 SR5 in July. I upgraded to the TRD wheels and Nitto Terra Grapplers and started immediately getting a vibration at 65+ MPH. I decided to lift the runner in hopes of correcting the issue. I went with a combination of a Tuff Country 4" coil spacer lift. Link to lift here Toyota 4Runner Lift Kits | Tuff Country EZ-Ride and also swapped the OEM struts with Bilstein 5100's all around. Now after the lift the truck looked great but still had a nasty vibration at 65+ MPH. I had Discount Tire in ABQ road force balance the tires and it went away for about 100 miles, it sat over night and came back. Very similar to a lot of others I've read. I was able to get rid of both the TRD wheels and terra grapplers and went with a wrangler duratrac 285/70/17 on a Procomp Vertigo 17x9 ET -06 4.75" backspace. They road better but I still had a vibration. Two of those tires were found to be out of round and were replaced. Some of the vibration was gone but came back with vengeance. I the. Switched to the ridge grapplers in a load range c and the ride was worse than ever.
I took the truck to a good forms who is a fabricator for off road trucks etc. he went through everything and suggested I get rid of the spacer lift all together. We decided on an icon extended travel coilover 2010 - Current 4Runner Extended Travel Front Coilover Shock Kit - ICON Vehicle Dynamics We installed the coil over and the ride improved with vibration being removed from the front only. Alignment and ride height were in spec and I drove it around for a couple hundred miles. Well the vibration was as as bad or worse than before so I finally took it to the dealer.
The dealer could not find anything that they would conclude to cause vibrations. I had a good alignment, quality coilver and bilstein in the rear, good pinion angle, greased joints (I did) balanced tires etc.
Dumbfounded I was beat down with this as driving was not enjoyable at all.
In a last ditch effort to try one more damn thing I swapped tires again to the Cooper STT Pro 285/70/17 load e tires and set them at 40 psi.
Initial lower speed was a bit more road road feel in the steering wheel and a touch louder than the ridge grapplers. I hoped dearly that these tires would run smoother and I am delighted to report that my vibration is almost 100% gone.
Logic would say that a heavier tire with stiffer sidewalls and in a mud terrain would not ride this smooth, glass almost with exception of the road feedback.
I'm going to go out on a limb here and speculate that since these tires took almost no weight to balance they are nearing perfect harmonics needed to satisfy this finicky pain the butt truck.
I have many things I'd Ike to add like fully adjustable UCAs and full sized struts in the rear to remove the rear strut spacer, adjustable end links upper and lower to make any adjustments needed as parts start to wear etc.
With the 4" lift, good coil overs giving me great cv angles and now this tire which rid the truck of vibration I smile while driving. If you are looking for a new tire, seriously consider the STT Pro. I hope this may help someone else out as I had almost lost hope... today I won :vader:
I bought I 2017 SR5 in July. I upgraded to the TRD wheels and Nitto Terra Grapplers and started immediately getting a vibration at 65+ MPH. I decided to lift the runner in hopes of correcting the issue. I went with a combination of a Tuff Country 4" coil spacer lift. Link to lift here Toyota 4Runner Lift Kits | Tuff Country EZ-Ride and also swapped the OEM struts with Bilstein 5100's all around. Now after the lift the truck looked great but still had a nasty vibration at 65+ MPH. I had Discount Tire in ABQ road force balance the tires and it went away for about 100 miles, it sat over night and came back. Very similar to a lot of others I've read. I was able to get rid of both the TRD wheels and terra grapplers and went with a wrangler duratrac 285/70/17 on a Procomp Vertigo 17x9 ET -06 4.75" backspace. They road better but I still had a vibration. Two of those tires were found to be out of round and were replaced. Some of the vibration was gone but came back with vengeance. I the. Switched to the ridge grapplers in a load range c and the ride was worse than ever.
I took the truck to a good forms who is a fabricator for off road trucks etc. he went through everything and suggested I get rid of the spacer lift all together. We decided on an icon extended travel coilover 2010 - Current 4Runner Extended Travel Front Coilover Shock Kit - ICON Vehicle Dynamics We installed the coil over and the ride improved with vibration being removed from the front only. Alignment and ride height were in spec and I drove it around for a couple hundred miles. Well the vibration was as as bad or worse than before so I finally took it to the dealer.
The dealer could not find anything that they would conclude to cause vibrations. I had a good alignment, quality coilver and bilstein in the rear, good pinion angle, greased joints (I did) balanced tires etc.
Dumbfounded I was beat down with this as driving was not enjoyable at all.
In a last ditch effort to try one more damn thing I swapped tires again to the Cooper STT Pro 285/70/17 load e tires and set them at 40 psi.
Initial lower speed was a bit more road road feel in the steering wheel and a touch louder than the ridge grapplers. I hoped dearly that these tires would run smoother and I am delighted to report that my vibration is almost 100% gone.
Logic would say that a heavier tire with stiffer sidewalls and in a mud terrain would not ride this smooth, glass almost with exception of the road feedback.
I'm going to go out on a limb here and speculate that since these tires took almost no weight to balance they are nearing perfect harmonics needed to satisfy this finicky pain the butt truck.
I have many things I'd Ike to add like fully adjustable UCAs and full sized struts in the rear to remove the rear strut spacer, adjustable end links upper and lower to make any adjustments needed as parts start to wear etc.
With the 4" lift, good coil overs giving me great cv angles and now this tire which rid the truck of vibration I smile while driving. If you are looking for a new tire, seriously consider the STT Pro. I hope this may help someone else out as I had almost lost hope... today I won :vader:
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