Recommend PSI 33’s 285/70/17 Pro Comp MT2 M/T
03-07-2019, 05:04 AM
#1
JK Newbie
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Recommend PSI 33’s 285/70/17 Pro Comp MT2 M/T
Hey All,
Just had Pro Comp 285/70/17 MT2 M/T installed on 17x9 Pro Comp Rock Crawler Steel Wheels and the tire shop aired them up to 40 psi, I’ve noticed some light shaking between speeds of 65-80 mph on the interstate anyone running 33’s at a lower PSI? I’ve got a 4 door 2017 J/K less than 10k miles and it never would shake before, so not sure if I need a rebalance or maybe the tires are over inflated?
Just had Pro Comp 285/70/17 MT2 M/T installed on 17x9 Pro Comp Rock Crawler Steel Wheels and the tire shop aired them up to 40 psi, I’ve noticed some light shaking between speeds of 65-80 mph on the interstate anyone running 33’s at a lower PSI? I’ve got a 4 door 2017 J/K less than 10k miles and it never would shake before, so not sure if I need a rebalance or maybe the tires are over inflated?
03-07-2019, 05:13 AM
#2
JK Enthusiast
I have the same rims with Duratrac 33's and run them at 36 on tow different Jeeps - a '07 2dr and an '14 4dr. Seems to be a good number for me including snow and rain. No bounce, no steering shimmy, definitely no death wobble which I had with my last '07 4dr and stock tires on the alloy wheels.
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Wandell (03-12-2019)
03-18-2019, 09:02 PM
#6
JK Enthusiast
I have the exact same tires size 315 x 70 r17. I have them at 40 with zero shaking of any kind up to 90 mph. 4 door with 3" lift. Of course, I was shaking like a mutha too before I had my ball joints, track bar, & steering stabilizer replaced. The addition of brackets for my lower control arms along with new balanced rubber and alignment didn't hurt either.
My guess is, if you have some mileage on your rig and/or installed the lift yourself, the shaking ain't coming from your new tires. Of course, if you're mostly stock with low mileage then yeah... you probably should just start with a rebalance and make sure your alignment is correct. You should get an alignment whenever you get new tires but that goes without saying.
My guess is, if you have some mileage on your rig and/or installed the lift yourself, the shaking ain't coming from your new tires. Of course, if you're mostly stock with low mileage then yeah... you probably should just start with a rebalance and make sure your alignment is correct. You should get an alignment whenever you get new tires but that goes without saying.
Last edited by WaterRat72; 03-18-2019 at 09:04 PM.