Hi, I have a LR Discovery2 (2003) which is pretty much stock. I have on it Bridgestone Dueler 265/65 R18 112s tires. I'm trying to ascertain what the tire pressures should be for the following conditions for both loaded and unloaded capacities? :-

General Road use F/R
Sand F/R
Rock/Stone F/R

Any help would be greatly appreciated.

Ivan

 

for general use I always do a chalk test. you can search it but basically chalk on tire and see if it wears even or on outsides .....etc adjust pressure.


the rest depends on exact conditions. not sure on the bridgestone specs or with your rims. I would think 15ish is usually a safe low point (I THINK).that is about what I would do on my stock 18 prolines with 275 65. light sand, I don't bother.


different set up now, but I do 8ish on rocky loose stuff

 

Thanks Dusty. I'll give it a try this weekend.

 

Hi. I tried what you suggested to no real avail. So, to be technical about things. I tried the age old temperature testing route for road use. I ran the vehicle down the freeway for 20 minutes and then with a temperature probe, tested the inner/outer & middle of each of the tires. If the inner/outer are higher than the middle of the tire, then the pressure is too soft and of course if it is lower then the tire is too hard.

That sorted out the road use with pressures of 32 pounds on the fronts and 39 pounds in the rears.

Off road on sand and rock, the vehicle best performed with around 18 pounds in each of the tires.

 

The 32 & 39 sound close to what is on the door jam sticker. I fun 18 lbs. for off-road, but I am no expert, and mostly afraid to go lower as do not want to have a bead break, but again, not real sure at what point that would happen. Dusty has better idea than I do. I have 245/75/16's, so not the same math, but I run 32 F and 40 R, and then up to 42F & 52 R when I tow my 4,500 lb camping trailer, again no math to support this, just guestimatation on what seems like it may work for me in my simple mind.