1. Check for a blister on a tire.
2. Check wheel balance on all four wheels.
3. Check tie rods, ball joints, a frame bushing's.
4. Have you checked out the shocks
5 Check out the drive shaft U-joint's, and balance of thedrive shaft.
6. Check wheel rims to see if they are bent.
im an auto technitian and it might be your alinment is off on either sides or both
Warped rotors
perhaps it is bad hub bearing Tire out of balance, loose lug nuts, worn or loose wheel bearing, defect in a tire, etc.
If you are in Full time it is recommended not to go over 25mph that is probly why it shakes put it in part time you can go up to 55 mph in part time
At 40 mph, a car is traveling at about 58.6 feet per second.
The body wants to continue going 40 mph.
wheels off van raised engine shakes side to side at 40 kmh
44feet
58.6 feet per second at 40 mph
You should have the wheel alignment checked. Could be a $20 Fix.
It depends on the car's stopping power. An average distance for 40 mph would be around 85 feet
40 mph = 40 miles in 60 minutes = 20 miles in 30 minutes.