What is the torq for the tire lug nuts for our '91 Barth?
We just bought new tires, but we don't know how much torq they should have.
Thank you for your help,
Tom Masters

I think it is probably predicated on the particular wheel you have. If you have Alco wheels, ask them (or a competent heavy truck center). No matter what your wheels are, any place that sells and installs 19.5" wheels, or whatever, ought to know. They do it day in and day out.
What new tires did you choose? radial I hope.

It is indeed based on the wheel's material (steel or alloy) and whether hub- or stud-piloted. We can't provide any useful guidance without knowing what model and length Barth you have, and what tires and wheels (especially number of lugs).

Originally posted by Gloria Masters:


Here's a copy of the data card.


I guess we still need wheel material and number of bolts, though.

Perhaps calling Spartan?

Yes, they are radials.Wheel materials are steel. We stopped in Panama City, FL and they couldn't help at all and suggested we go to someone like Pep Boys.
Our coach is 28 feet long, a 1990-1991 Breakaway.
Many people on this trip have admired Bartha, she definitely doesn't look her age. Didn't see any on the road during our almost 2000 mile trip.
We're on our way home to Santa Fe. She has performed beautifully!

It's likely you have 6-lug Budd wheels. Studs, nuts and extenders (for wheel covers) are available at NAPA.

I got the thin nuts for securing the wheel covers online...can't find the link right now.

torq for the 6 lug wheels should be 400 to 600 lb/ft. Aluminum wheels on the duals require a special "first nut" that has a shoulder.

What ever you do DO NOT allow the use of an air powered impact wrench to be used for tightening. When I bought our Breakaway, there were 2 stripped studs on one side.

Whoa! There no wheel nut in the world that would tighten to 400 ft.lbs. The maximum torque for a 9/16" diameter lug nut is 145 ft.lbs. All wheels made of steel follownthe same chart, which is availble online at ehow.com. Aluminum wheels specs are available from Alcoa or any big rig tire shop. It is not humanly possible to apply 400 or more ft.lbs. of torque. And not impact wrench that is air powered will exceed 150 ft.lbs. I suspect your steel wheels need 135 to 145 and if you have Alcoa's and are using the proper shouldered lug bolts it will be about 115. If in doubt call the nearest Goodyear Truckwise Center.

quote:

If in doubt call the nearest Goodyear Truckwise Center.

or WINGFOOT as the case may be.

UMMMMM, that is what the specs are for the 6 bolt system I have and was verified by 3 sources.

I use a 3 foot breaker bar, I weigh 200 lbs, and at the end of the it will be close to 500 lb/ft.

My wheel studs 6 bolt system are 3/4 inch diameter.

1" impact wrench WILL indeed go well over 600 lb/ft torque and that is what most truck tire places use.

Check this PDF out

http://lelandbrake.com/images/catalog/472-473.pdf

3/4 16 studs require 450 to 500 lb/ft.

http://www.trucktoolsales.com/...k_tool_sales_003.htm

1" impact wrenches are rated least 900 lb/ft

Apparently Ed's coach and mine have the same Budd wheels. 450 lb-ft is correct; these are stud-piloted, which generally require more torque than hub-piloted wheels.

1" impact wrenches are rated least 900 lb/ft
!!! Hurts my skinny wrist just looking at some of those wicked wrenches !!!

http://lelandbrake.com/images/catalog/472-473.pdf
let's end the guessing. Here are the full spec's for both type of wheels. I was wrong about the larger wheels.

sure you can get 400lbs of torque.use a 8ft pipe andyou will get more than that.
lenny