You may need your wheels balanced. Make sure the tires and wheel rims are in good condition.If it only shakes when turning it may be the axle shaft or CV joints needing replacement. If everything checks out fine, your car just might be speed sensitive.
〉 Answered on Sep 4th, 2012 by Colleen McGee, Driving Instructor at Americas Driving School
This could be that the tires are 'out of round', a problem with the wheel (of the tire), unbalanced tires, your vehicle may need alignment or many other possibilities.. unfortunately there is no way to know without getting it checked.
〉 Answered on Sep 4th, 2012 by Diana Claussen, Owner / Writer at Auto Goddess
Try having your tires checked. It is likely a tire balance problem with one of your front tires. Most tire stores will check for free.
〉 Answered on Sep 4th, 2012 by Jo An Holt, Automotive Journalist at Holt & Associates
The vibration in your steering wheel could be from a number of sources, including a wheel out of balance, a loose wheel, or worn parts in your steering system. Due to nature of your question and the potential safety risk, you should check your wheels and steering components immediately, or take your car to an authorized/qualified repair station and have a professional check the steering system.
〉 Answered on Sep 4th, 2012 by Karen Salvaggio, Owner - Professional Race Car Driver at Thunder Valley Racing
Margaret, a vibration like this is almost always related to your tires. It could be a few different things, but a service shop should be able to pinpoint the source of the problem with your tire(s) fairly easily. Possible causes could be: irregular tire wear/feathering from alignment or lack of rotation, a separated tire, a bent wheel or a tire out of balance. Best wishes!