View Full Version : Tire Pressure Too High?????

10-01-2002, 05:50 AM
The "Buckin Bronco" currently has LT235/75R15 tires on it. The tires say max 50 PSI but wow what a cruel ride at that pressure even on pavement. What would the best psi be for highway and should these type of tires be aired down for off road?

thanks Jim

PS I'm new here and will get some pictures up as soon as I can.

10-01-2002, 07:31 AM
Im sure there are a few guys here that have tire shop experiance and could tell you what would be the best pressure ! I know I run my 32 bfg mud terrain tires at 30 on the highway ! I know many that run them at 20 psi for the road !I think if you run your tires at to low a pressure there will be more tire wear ,,besides I have a york compreessor under the hood and it only takes me about three minutes to fill all four tires from 12 psi to 30 <img src=icon_smile_big.gif border=0 align=middle>So i dont mind airing them down for the trail and then up again at the start of a trail ! I put together a manifold with four clamping chucks so I can fill allthe tires at the same time ,,, Its just way to easy <img src=icon_smile_big.gif border=0 align=middle><img src=icon_smile_big.gif border=0 align=middle>After years of running on low pressure out to the closest gas station this is a great thing !
What you could do is phone a tire shop that carries that brand and ask what the recomended street pressure would be ,,, just because you can put 50 pounds pressure in doesnt mean you have to .I think with the higher tire presure you can put more weight on each tire ,IE when you have a camper on the back of your truck etc !

10-01-2002, 08:08 AM
Same here I run mine at 30PSI for the street and air down to 12-15 offroad

crazy j
10-01-2002, 08:39 AM
the pressure on the tire is simply the max the tire is safe at, not the recomended pressure for your vehicle. if you still have the label with the vehicle's recomended pressure (usually inside the door jam or owners manual)use it as a guideline. if youve changed tire sizes, it will be different. basically the larger the tire for the same vehicle, the lower the air pressure as there is more surface area supporting the vehicle. you'll have to find what works. over inflation causes wear along the center of the tread and an overly rough ride. underinflation causes wear along the outside edges, poor handling and tire overheating. correct pressure will result in even wear and maximum fuel economy and tread life. for example, in my toy, i run around 28psi with my 31x10.50 radials and about 15psi with my 35x13.50 bias ply tires. be sure you check these pressures when tire is cold as the pressure changes when you drive on them.

i drive a truck. it's a 4x4. it has big tires. it goes vroom vroom.

10-01-2002, 09:05 AM
Thanks everyone. I'll try a few different inflation pressures and see how it goes. Lower pressures will help stop the buckin on rough roads as well.
thanks again............Jim