Enthusiast III
Came across this pice of valuable information on a FB page and thought I share it with all of you.
Don't know how correct this is, but to me it seems legit.
"First of all, this is a smart question. Many "experts" out there are getting stuck because they have no fuckin idea what they are doing.
A correct pressure has to be calculated according the tires you have. for the following examples, I'll assume you have BFG KO2. Engraved on the tire sidewall, you see the max load, e.g. 1250kg, also to be taken from the LI (e.g. 116) and a table, which is only valid at max pressure of e.g. 550kPa (5,5bar) for a KO2. to be correct, you should have a scale and get the proper axle weights of your car. let's assume you have a 50\50 weight distribution front\back, that will result in a wheel load of 750kg with your 3000kg overall weight. your tire can take 1250kg at 5,5 bar...it's a linear function, half pressure, half load bearing capacity. 2,75bar would give you 625kg in this example. you got the point? so 5,5bar\1250kg = x bar\750kg which gives you an x= 3,3bar.
This is you road pressure. Reduce by 25% for high speed off-road tracks up to 90km\h, 50% for off road driving up to 50km\h, reduce down to 1bar for dunes and with high caution down to 0,8bar for self recovery. If you have bead lock rims, you can go down to 0,5 bar.
Tire temperature is a great indicator to monitor tire health. If you go too fast for too long with too less pressure, your tire will overheat and eventually fail. Test: hold the back of your hand against the sidewall. If it's warm, all good. If it's hot, be cautious, go slower or increase tire pressure. If it's HOT (like a fresh cup of coffee hot) then it's too much, definitely increase pressure or slow down."
Don't know how correct this is, but to me it seems legit.
"First of all, this is a smart question. Many "experts" out there are getting stuck because they have no fuckin idea what they are doing.
A correct pressure has to be calculated according the tires you have. for the following examples, I'll assume you have BFG KO2. Engraved on the tire sidewall, you see the max load, e.g. 1250kg, also to be taken from the LI (e.g. 116) and a table, which is only valid at max pressure of e.g. 550kPa (5,5bar) for a KO2. to be correct, you should have a scale and get the proper axle weights of your car. let's assume you have a 50\50 weight distribution front\back, that will result in a wheel load of 750kg with your 3000kg overall weight. your tire can take 1250kg at 5,5 bar...it's a linear function, half pressure, half load bearing capacity. 2,75bar would give you 625kg in this example. you got the point? so 5,5bar\1250kg = x bar\750kg which gives you an x= 3,3bar.
This is you road pressure. Reduce by 25% for high speed off-road tracks up to 90km\h, 50% for off road driving up to 50km\h, reduce down to 1bar for dunes and with high caution down to 0,8bar for self recovery. If you have bead lock rims, you can go down to 0,5 bar.
Tire temperature is a great indicator to monitor tire health. If you go too fast for too long with too less pressure, your tire will overheat and eventually fail. Test: hold the back of your hand against the sidewall. If it's warm, all good. If it's hot, be cautious, go slower or increase tire pressure. If it's HOT (like a fresh cup of coffee hot) then it's too much, definitely increase pressure or slow down."
