I searched but didn’t see if it was discussed before...
There is a difference in the load limits of the factory tires/pressures between the LX570 and the LC200. I noticed when looking through gaijin’s excellent explanation of how to use the load tables. For example, in the case of LT275/65R18 tires, this leads to a significant 5psi difference in the RCTIP between the two.
If anything I would have expected the (heavier I think) LX to use the higher pressures required for more load carrying capacity, but it it the LC.
Thoughts?
LC200:
LX570:
There is a difference in the load limits of the factory tires/pressures between the LX570 and the LC200. I noticed when looking through gaijin’s excellent explanation of how to use the load tables. For example, in the case of LT275/65R18 tires, this leads to a significant 5psi difference in the RCTIP between the two.
If anything I would have expected the (heavier I think) LX to use the higher pressures required for more load carrying capacity, but it it the LC.
Thoughts?
LC200:
The OEM P285/60R18 tires at the factory recommended inflation pressure of 33psi have a Load Limit of 2,512 pounds. Since these are a P-Metric tire used on a Light Truck, the Load Limit has been inflated by 10% (industry convention) - the "raw" required Load Limit is, therefore, 2,512/1.1 = 2,286 pounds.
At 45psi, the LT275/65R18 tires have a Load Limit of 2,310 pounds. This Load Limit does not need to be adjusted as it is a Light Truck tire used on a Light Truck. Yes, the 2,310 pound Load Limit at 45psi is slightly above the minimum required 2,286 pounds, but 45psi is the nearest whole psi number that meets or exceeds the minumum required.
LX570:
That's about it. The LX570 comes stock with P285/50R20 tires which have a Recommended Cold Tire Inflation Pressure of 33psi. On the tables, this is a Load Limit of 2315 lbs.
Divide 2315 by 1.1 and you get the adjusted Load Limit for LT-Metric tires (2315 / 1.1 = 2105 lbs).
Now all you have to do is look in the tables for your LT-Metric size and find the pressure that yields >2105 lbs.