Petey
Well-Known Member
Agreed ..and I too notice that the dealer always over inflates but the point im making is this.. last week just got my Jl back from a second dealer with my pull to the right issue. The first said they gave me an alignment and everything else checks out..drive the vehicle just a few seconds and notice that it still pulls to the right maybe worse. SO I left there and looked into another dealer ..a few months later....when they did the alignment there was an obvious difference felt .. even though they insisted it was fine and said I don't need anything done on it. I complained to the manager and had him ride ... as much as he tried keeping the vehicle straight he couldn't deny anymore theres an issue.. their machine discovered that my left front was way off... and got it to spec .... it dindt fix the pull to the right completely but made it hella better .. it no longer rides like some the people describe theirs .. still not perfect but much better.. apart from that, they found suspension components loose ..mind u it was like this straight from the factory.. with these tightened ( they didn't want to tell me which ones ...also, looks like they tightened the screw on the steering box ) It made all the difference. Now my vehicle rides much better even over inflated in the 40's PSI then when I was riding on it in the 35's PSI before the last dealer. I like it lower because it put a bit of more comfort in the ride but even though they're overinflated now the JL is much more manageable now .If you're talking about actual fasteners not being tightened down then air pressure will have little impact BUT, having too much air (a notorious issue with JLs and JTs) will feel like a loose suspension. As @SophieNoel said, it would be very 'squirrely'. Her Jeep felt like it could not track straight at all, and leaned right. We lowered it to 35lbs and all was good.
Think of too much air in a tire like a balloon. Over inflated tires round the contact patch and you have less tire on the road (see pic below). That will have a huge effect on a straight axle truck, even bigger than a passenger car.
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