4070B shake, when driving 65

I agree, tire wear tells a lot, but if it just happened out of the blue, I'd check the driveline. Besides, I remember years ago,, nobody EVER balanced spoke wheels. Vibration was just part of trucking.

 

Have the toe in CK at a real shop that only does FT. end work, they can go over ft. end and drive/line till they find what is making it shake, my back hurts just looking at your truck and thinking my 4 spring truck like yours, mine is so short that fuel tank is under the door and has a hoop to put your boot in to start climb up, and drive/shaft is so short that is hard to change u/joints ?

 

Short wb on springs have under floor of cab vibes by nature. You will know were every little pebble on an asphalt road is. When you bobtail and sometimes hit a good bump or frost joint it will scoot you sideways and make you feel like you are gonna go head over heels.
Nice Transtar. A model that was once a dime a dozen is now a rare and unique sight to see. I like.

 

Are those 20’s or 22’s on the rear drive axle and 22.5’s or 24.5’s on front drive axle? I noticed it’s got tubeless demountable wheels on front drive and lock ring tube-type wheels on the rear drive. If the tires on the rear are 10.00-22’s they’ve gotta be well over 25years old even if they are radials.

 

10-4. That eliminates the chance of that mismatch causing the issues.