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Interesting payload capacity on my build sheet


NAXJA Forum User
I had downloaded my build sheet a couple years ago and happened to look at it today again. It lists max payload at 1800#! From my research normal is 1150#. Mine did come with a trans cooler, HD cooling system, HD suspension, and 225/75r16 tires. I'm guessing because it's a USFS XJ, with the HD suspension and cooling, it has a higher payload. Just curious what others think.
Make that 225/75r15 not 16.

Here's an excerpt from the build sheet.

Build To U.S. Mkt. Specifications
Payload Rating - 1800#
Federal Govt Bid - U.S.
Auxiliary Transmission Oil Cooler
Heavy Duty Engine Cooling
Heavy Duty Suspension
Full Size Spare Tire
P225/75R15 OWL Wrangler AT Tires
That is pretty neat. I've never actually looked at the official payload ratings of these. That is quite the jump. I'm curious which component is the limiting factor that allows a 56% increase. Maybe the leaf springs? Then the cooling systems were beefied up to accommodate.