EvilLex03 Posted August 19, 2004 Share Posted August 19, 2004 I got some thornbirds for my path today, they are used. they are 31x11x16, they are prity worn, I was just wondering what I should run for PSI in them ? Link to comment Share on other sites More sharing options...
Mookie Posted August 19, 2004 Share Posted August 19, 2004 On the sidewall of the tire is there some sort of psi numbers you can read? For 4x4ing, it will depend on what type of terrain you are on and what type of wheeling. Link to comment Share on other sites More sharing options...
sw Posted August 20, 2004 Share Posted August 20, 2004 you can always do the chalk line test Link to comment Share on other sites More sharing options...
EvilLex03 Posted August 20, 2004 Author Share Posted August 20, 2004 Yea it does say on the sidewall, but thats the MAX PSI, I dont want to run the max, do I ? Link to comment Share on other sites More sharing options...
Mr. Pickles Posted August 20, 2004 Share Posted August 20, 2004 Yea it does say on the sidewall, but thats the MAX PSI, I dont want to run the max, do I ? Probably close to, but not quite, max for on-road, and lower (or MUCH lower) off road, depending on if you're in mud, sand, etc. Link to comment Share on other sites More sharing options...
88pathoffroad Posted August 22, 2004 Share Posted August 22, 2004 Generally 32-35 PSI is good for all-around comfort and tire wear. Link to comment Share on other sites More sharing options...
MatterHorn Posted August 23, 2004 Share Posted August 23, 2004 Yea it does say on the sidewall, but thats the MAX PSI, I dont want to run the max, do I ? Probably close to, but not quite, max for on-road, and lower (or MUCH lower) off road, depending on if you're in mud, sand, etc. shouldn'd you use the published pressure that is written in the door jamb? Link to comment Share on other sites More sharing options...
Mr. Pickles Posted August 23, 2004 Share Posted August 23, 2004 Yea it does say on the sidewall, but thats the MAX PSI, I dont want to run the max, do I ? Probably close to, but not quite, max for on-road, and lower (or MUCH lower) off road, depending on if you're in mud, sand, etc. shouldn'd you use the published pressure that is written in the door jamb? If you're running the same stock tires, then yeah, go by what Nissan says. If not, then you need to go by the tire manufacturer's specs as Nissan can't anticipate every combo of size, design, etc. that we'll put on a Pathy. Link to comment Share on other sites More sharing options...
ChromoTech Posted August 24, 2004 Share Posted August 24, 2004 I just run 32psi in my 31x10.50 15s and then i drop the pressure when i 4x4 Link to comment Share on other sites More sharing options...
rennwerkes Posted November 28, 2006 Share Posted November 28, 2006 Folks, just replaced my tires and was wondering what pressure most are running. Interestingly Costco has my tires at 28psi!!! They said that's recommended. Ummmm...I'm kinda not sure about that! Probably start running 32psi or thereabouts! Link to comment Share on other sites More sharing options...
ILoveMyPatty Posted November 28, 2006 Share Posted November 28, 2006 Whats the chalk line test? Link to comment Share on other sites More sharing options...
yozsi Posted November 28, 2006 Share Posted November 28, 2006 Whats the chalk line test? we do this in auto x and road racing, its where you put a chalk line on the sidewall to the tread, then you turn it rubs off the chalk so you can see how much sidewall flex it has. but i think the means put a chalk line all the way across the tread and make sure the whole tread is touching. Link to comment Share on other sites More sharing options...
88pathoffroad Posted November 28, 2006 Share Posted November 28, 2006 Draw a chalk line across the tread. Drive forward several car lengths and then stop. Examine the line on the tire. If your line is worn off only across the outer edges of the tread, you need more pressure. If the line is worn off across the center only, your pressure is too high. Look for the line to wear off evenly for best pressure settings. Link to comment Share on other sites More sharing options...
Slick Posted November 28, 2006 Share Posted November 28, 2006 on mini me's 31's i run 38lbs (max is 45lbs..vurry harsh ride) and off road i air down to 25lbs. on king caca's 33's i run 32lbs (max is 35lbs) and off road i air down to 20lbs. Link to comment Share on other sites More sharing options...
RI_ChevyGuy85 Posted December 1, 2006 Share Posted December 1, 2006 note to self.... down pressure to 20psi-ish so you don't get stuck in the mud for 3 days. again. -alcohol- Link to comment Share on other sites More sharing options...
cdhicks99 Posted December 4, 2006 Share Posted December 4, 2006 me does 32 psi on the street and 18 in the front and 14 in the rear when going off road. Link to comment Share on other sites More sharing options...
mikemike Posted December 4, 2006 Share Posted December 4, 2006 my '90 calls for 26 PSI typically when a sidewall calls for a max of 44 PSI you should use between 30 and 35. tons of people put 44 PSI in their tires, and it frustrates me cause i am constantly lower the pressure. running at 44 PSI you will mess up the tread on your tires. inside of your door there will be a sticker that says the recommend pressure from the manufacturer Link to comment Share on other sites More sharing options...
speedbuggy67 Posted December 4, 2006 Share Posted December 4, 2006 got any pics of your truck with the thornbirds? I'd love to see em those are some bad lookin tires! I run my 31's around the 35 mark street 18psi sand and 20-22 offroad. good luck. Scott Link to comment Share on other sites More sharing options...
Dowser Posted December 5, 2006 Share Posted December 5, 2006 (edited) For future reference if anyone else reads this Post, Recommended Tire PSI for STOCK tires can be found in your Owners Manual. If your running anything larger then Stock, and you want the best Wear out of your Brand Spanking New Tires that you paid a small fortune for, then Check out what the Tire Manufacturer recommends for that style and size tire. Under Normal Driving Situations (Not Offroading) If your running a Radial Tire, Over Inflation- causes tires to ride hard and are more likely to be affected by road shocks, aand of course will lead to Center Tread Wear Under Inflation- under daily driving situations, causes abnormal tire deflection, which builds up significantly more heat and of course will lead to Sidewall wear. If your running a Bias Ply Tire for some reason, Same rules apply as above but understand you generate MUCH more heat while under inflated cause the Tire Construction is a very rigid design and does not allow for a great deal of flexability. Hope that helps anyone in Future. Dowser Edited December 6, 2006 by Dowser Link to comment Share on other sites More sharing options...
Gotrek Posted December 5, 2006 Share Posted December 5, 2006 Our 92 calls for 26 PSI with 31 x 10.50" tires (stock tires) on the Door Jamb. I run 28-30 Link to comment Share on other sites More sharing options...
BLouisGod Posted December 5, 2006 Share Posted December 5, 2006 Each tire brand and model is specific. Look on the tires, not the manual. Link to comment Share on other sites More sharing options...
Dowser Posted December 6, 2006 Share Posted December 6, 2006 (edited) Each tire brand and model is specific. Look on the tires, not the manual. Actually, Thats not entirely accurate but is mostly true. From what I'm learning at School Right now, which is First Year Automotive and Heavy Duty Mechanics at NAIT, (Northern Alberta Institute for Technology) If your Running STOCK sized Tires, your supposed to use the vehicle manufacturer's specs for PSI ratings regardless of Tire Brand. Anything outside the STOCK sizing and your supposed to use Tire Manufacturer's Specs. This is because by adding larger then stock tires your already messing with what the Vehicle Manufacturer Designed for the specific vehicle and you wont be able to keep it within any of the official Specs anyway so then it makes no difference. I say this only cause if your going to keep your STOCK tires on and you go in for an Alignment, The very first thing you do is check for Tire Pressure in all 4 tires according to Factory spec, since the technicion will be going by Nissan's specs and Factory PSI is needed. Thats why I said, Recommended Tire PSI for STOCK tires can be found in your Owners Manual. If your running anything larger then Stock, and you want the best Wear out of your Brand Spanking New Tires that you paid a small fortune for, then Check out what the Tire Manufacturer recommends for that style and size tire. Just being Accurate. Dowser :oops: Edited December 31, 2006 by Dowser Link to comment Share on other sites More sharing options...
Spolar93 Posted December 6, 2006 Share Posted December 6, 2006 his thornbirds are bias ply tires. regardless of tire size, its recomended to run them lower than a radial tire. i run my tsls at 22psi on the street and they are wearing well. however, in the 4"+ snow/ice/slush i have up here right now, i dropped them down to 10psi front and rear and am getting pretty good traction. plus its fun to do powerslides with my lincoln locked rear! Link to comment Share on other sites More sharing options...
Smithk Posted December 7, 2006 Share Posted December 7, 2006 I run 26 PSI in the front, and 29 PSI in the rear until I get my new tires, but these are stock tire size currently. Link to comment Share on other sites More sharing options...
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