Peterbilt

Around 18500 to 19500

 

There's a few few variables that are at play here. Not limited to but including drive line rating, axle ratings, and even wheel base. And don't forget the amount of personal things, it all adds up.
18,000 -19,500 will be a pretty close guess.

My '96 standup with 550 cat, 1850 driveline, 40 rears, 135 gal tanks, 272" wheelbase and all my c**p went about #18,750.

13 years later, another axle, 30 more inches of frame, 165 gal tanks, headache cabinet, all the chains and binders I need and everything else it goes #24,250. Go figure.

 

Should be O.K. getting under that with a stock Pete.
Have a 377, 287" W.B. 126" ICT, 4th lift axle, 26,500, fuel & water full

 

My 06 flattop weighs in at 19,000 lbs, with 1/4 tanks. I'll check my cat scale ticket again tomorrow and make sure though.

 

The 379 Petes tend to be pretty light, depending on specs. Some of the bullhaulers I've run with are 1-3k lighter than my W9. They have the same drivetrain and wheelbase as I do. Big Cat, 13/18 spd trans, 3.55 gears in 40k axles, big tall bunk, 260-275" w/b and 53' trailers w/ 10' 1" spreads. But, I also know that have a lot crap in the truck and weigh 1-2k heavier than mine.

My tractor weighs 19.3k with 100 gallons of fuel, and I'm hangin' a pair of 135's. Door sticker says 18,250, but I've got some chains, plus tools with me for road side repairs, if/when needed.