2 door JK rides rough

Glynn

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Oct 15, 2020
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I have a 2013 2 door JK Sport with 87,000 miles. It has not been lifted. I don't mind my Jeep riding a little rough. I knew it would when I bought it. Unfortunately, I have added to the problem a little by installing Rancho 9000 shocks and 285/70 hybrid tires. I don't plan to do much off-roading. I plan to deflate the tires a little. They are over inflated by 2 pounds to keep the under-inflation light from coming on. I think I will let about 3-4 lbs. of air out.of the tires. This will help a little. Since the shocks and tires are only 4 months old I can't replace them. Do you guys have some ideas for softening the ride a little bit? Thanks.
 

IndominusHuman

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What are your pressures set at and what tires are you running? My light comes on when they drop below 43psi and that way too high. I am running at 28 or 29 and that a pretty universal run tire pressure in our world.
 
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Glynn

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My tires are Kenda Klever R/T (hybrid tires). 285/70r17 on the factory wheels. My tire pressures are 35 lbs. On the front and 37 lbs. On the rear (cold). Would you recommend I lower the pressure down to about 28-29 lbs. ?
 

IndominusHuman

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Yeah, if you lower the pressures that will give a little more cushion. Certain tires also just ride rough. I have Cooper SST Pros and they are rough compared to like a Toyo so it may just be that brand of tire.
 
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Glynn

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I took my Jeep for a test drive on the rough streets in my area. The ride was smoother when the tires were deflated to 28 lbs. I was misinformed when I bought the tires. They recommended 35 lbs and they sell a lot of tires for jeeps and pickup trucks. Does anyone have any more ideas for a smoother ride? One guy I know suggested installing spacers but I have doubts that this will help.
 

IndominusHuman

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I took my Jeep for a test drive on the rough streets in my area. The ride was smoother when the tires were deflated to 28 lbs. I was misinformed when I bought the tires. They recommended 35 lbs and they sell a lot of tires for jeeps and pickup trucks. Does anyone have any more ideas for a smoother ride? One guy I know suggested installing spacers but I have doubts that this will help.
Is he talking about wheel spacers?

With having a 2 door, you will never have the same ride as a 4 door just because of wheelbase. On a scale of Model T to Cadillac how rough is it? 😂
 

Chris

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A few things to fix a rough ride:
  • Keep your tire pressure between 26-28 psi (anything higher than that is too much, I'm not kidding)
  • Invest in good shocks (not all shocks ride the same)
  • Make sure you always pick a C load rated tire as oppose to E when you have the choice. The thick sidewalls on an E rated tire (which are made for light trucks) are way too stiff for a vehicle as light as a JK)
 
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Glynn

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Is he talking about wheel spacers?

With having a 2 door, you will never have the same ride as a 4 door just because of wheelbase. On a scale of Model T to Cadillac how rough is it? 😂
I was talking about coil spring spacers not wheel spacers. I am certainly aware of how a short wheel base affects the ride in a vehicle. I also stated earlier that I did not expect a smooth ride in my 2 door jeep. I guess there is a clown in every forum.
 
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Glynn

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Oct 15, 2020
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A few things to fix a rough ride:
  • Keep your tire pressure between 26-28 psi (anything higher than that is too much, I'm not kidding)
  • Invest in good shocks (not all shocks ride the same)
  • Make sure you always pick a C load rated tire as oppose to E when you have the choice. The thick sidewalls on an E rated tire (which are made for light trucks) are way too stiff for a vehicle as light as a JK)
Thanks for the advice. I have D rated tires. Next time I buy I will go with C rated tires. I will also adjust my shocks down one notch and deflate tires to 26 lbs. I adjusted the shocks down a couple of notches before but I was getting "airborne" going over very rough pavement. I will try setting them down one notch. I think these things will solve my problem.
 
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IndominusHuman

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I was talking about coil spring spacers not wheel spacers. I am certainly aware of how a short wheel base affects the ride in a vehicle. I also stated earlier that I did not expect a smooth ride in my 2 door jeep. I guess there is a clown in every forum.
Was just trying to help you. You took that way wrong.
 

Chris

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Thanks for the advice. I have D rated tires. Next time I buy I will go with C rated tires. I will also adjust my shocks down one notch and deflate tires to 26 lbs. I adjusted the shocks down a couple of notches before but I was getting "airborne" going over very rough pavement. I will try setting them down one notch. I think these things will solve my problem.
D isn't bad. I've had C, D, and E. The ride difference is very noticeable between them all, given that the psi is the same. I think you'll find that the tire psi alone makes an astounding difference. I'm always shocked to hear that so many people run their tires at 35 psi. That's way too much psi for most vehicles, unless you like a really rough ride.
 
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