IOS-XR
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We've got a '21 High Altitude Diesel that I swap tires/rims for winter and wheeling. We put the factory HA 20" wheels and Dueler H/T's on for the summer and a set of '18 JLU Rubicon 17" wheels with BFG KO2's for the winter and some light wheeling.
When we first got the Gladiator if memory serves the factory pressure on the tires was 42lbs. It didn't track very well so per some threads here I dropped the pressure to 36. That really helped the "wandering steering" and over all made it a lot nicer to drive. When we put the 33" KO2's on last fall I assumed that I should run about the same pressure. The tires were "bouncy" and when I was at speed on the four lane I'd get a little shimmy after going over a bump. It would clear up really fast though. I just assumed that was the penalty for running a much taller sidewall off-road tire. I picked up a Fox 2.0 steering stabilizer to put on in an attempt to combat this issue. Haven't done that yet though because I'm lazy/been too busy......
Well this year when we switched tires the dealership I took it to pumped the KO2's up to 44lbs. They rode like rocks! I started dropping them down figuring I needed to get back to 36lbs. I dropped them a bit and hit 40lbs and it was like magic. They track great, aren't bouncy, and I get no "bounce shimmy" on the highway anymore.
I have not tried the chalk test with either set of wheels/tires but I need to do that. I will replace the steering stabilizer in a couple weeks as I've got some new steps to put on anyway but at this point I don't feel like the Jeep needs it.
Anybody else find that the KO2's need to run a little higher?
When we first got the Gladiator if memory serves the factory pressure on the tires was 42lbs. It didn't track very well so per some threads here I dropped the pressure to 36. That really helped the "wandering steering" and over all made it a lot nicer to drive. When we put the 33" KO2's on last fall I assumed that I should run about the same pressure. The tires were "bouncy" and when I was at speed on the four lane I'd get a little shimmy after going over a bump. It would clear up really fast though. I just assumed that was the penalty for running a much taller sidewall off-road tire. I picked up a Fox 2.0 steering stabilizer to put on in an attempt to combat this issue. Haven't done that yet though because I'm lazy/been too busy......
Well this year when we switched tires the dealership I took it to pumped the KO2's up to 44lbs. They rode like rocks! I started dropping them down figuring I needed to get back to 36lbs. I dropped them a bit and hit 40lbs and it was like magic. They track great, aren't bouncy, and I get no "bounce shimmy" on the highway anymore.
I have not tried the chalk test with either set of wheels/tires but I need to do that. I will replace the steering stabilizer in a couple weeks as I've got some new steps to put on anyway but at this point I don't feel like the Jeep needs it.
Anybody else find that the KO2's need to run a little higher?
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