Northwest heavy flats

If you're staying on the interstates and want to run OR then stretch your truck out for a bigger bridge. If you need to make Idaho offtrack then you'll take a hit in OR on your inner bridge. I used to run a t800 with 244" wb and was right at 5.5 offtrack but got knocked down to 101200 gross in OR.

 

Forget all about the outer bridge. We have one truck that can only gross 103,500 because of the bridge from the drop on the truck to the rear drop axle on the trailer. But because of the weight of the truck and trailer he can still scale 65k of payload. That is the important part, not being able to gross 105,500.

If you can get a tare weight under 38,500 you can gross 103,500 with 65k of cargo. The quad axle Reitnouers they sell run around 13k in weight. That leaves you 25,500 for the truck. That is one heavy truck too.

 

I've only got 110 gallons i can use. 18 inches was chopped off the left tank to make room for the pump i've got for the tanker i'm pulling. Both tanks are 120 gallons stamped. One wouldn't think 18 inches would take out that much fuel. The left tank certainly looks bigger then 55 useable gallons. But when that gauge goes below E. There certainly isn't much inches at the bottom.

 

You want the Idaho spread either way. That trailer would be more maneuverable than a 48' spread.

 

What is an idaho spread and what is the outer and inner bridge formula. Is it the space from center space between both tandem axles and the length from centet steer axle to center of most rear axle. Thank you.

 

Axle Spacing on 1-2-3 is 122" 3-4 is 76", 1-4 is 198". This actually puts your tridem further forward while leaving the tag axle at the rear of the trailer. It is called an Idaho spread because it was designed to specifically deal with their off tracking rules.

Outer bridge will be the measurement from the center of the steer axle to the center of the rear most axle on the trailer. Inner bridge I was talking about is the measurement from the center of the drop axle on the truck to the center of the last axle on the trailer.

 

Thankyou for the info. I live in Idaho and I know on the 55 and 95 there are some restrictions, thanks for clarifing.