Got my new Toyo Open Country MTs but 45psi????
01-28-2009, 03:49 PM
#1
JK Super Freak
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Got my new Toyo Open Country MTs but 45psi????
wooHoo! I just changed my tires from Toyo Open Country ATs to MTs. So far I love these tires! Not much louder on the Highway than my old ATs at all! 
However the tire guy(20+ years experience) says those tires are rated for 80pounds for a certain weight. He then pulls out his calculator and calculates the weight of my vehicle and says I need to run the tires at 45psi
I thought I read somewhere here that they should run around 30psi? What the heck gives
However the tire guy(20+ years experience) says those tires are rated for 80pounds for a certain weight. He then pulls out his calculator and calculates the weight of my vehicle and says I need to run the tires at 45psi
I thought I read somewhere here that they should run around 30psi? What the heck gives
01-28-2009, 03:58 PM
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JK Enthusiast
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It has to do with maintaining the load rating and heat dissipation of the OE tires. I run my 35's at 40 PSI. You wont do any damage at a lower pressure and you will get a better ride. I would run them between 30 and 35 on the road.
01-28-2009, 04:17 PM
#4
26.5 to 29 psi in mine, and since the full control arms, rides great, handles terrific.
The rear control arms really made a heck of a difference, medium speed corners are phenomenal, the back end is planted.
Tire wear measured with a guage is exceptionally even on all 4 tires, but I did have a lot of running on mine at 26lbs, as the higher pressures made it too flighty untill I added the lower front arms for a caster of 7.1 degrees.
The rear control arms really made a heck of a difference, medium speed corners are phenomenal, the back end is planted.
Tire wear measured with a guage is exceptionally even on all 4 tires, but I did have a lot of running on mine at 26lbs, as the higher pressures made it too flighty untill I added the lower front arms for a caster of 7.1 degrees.
01-28-2009, 04:24 PM
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JK Freak
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Guy rotating my swampers set em @ 40psi, feel alot better down around 30psi. Drive w/ em and adjust to your feel while keeping an eye on wear pattern, is my reccomendation.
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01-28-2009, 05:27 PM
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You can check out this table and do your own calcs if so inclined...
At 35 PSI those tires can handle 4400 lbs per axle - this far exceeds the JKs 2650 lb/axle GVWR.
TOYO TABLE
At 35 PSI those tires can handle 4400 lbs per axle - this far exceeds the JKs 2650 lb/axle GVWR.
TOYO TABLE
Last edited by 08RUBIJK; 01-28-2009 at 06:03 PM.
01-28-2009, 05:28 PM
#9
JK Enthusiast
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Do the "chalk test". 28 psi 4 mine (and 'cause of the thick sidewalls they're still rather stiff). Wouldn't trade 'em for anything. Great in the rocks!
