Jump to content

Unibody Or Frame Built

Recommended Posts

The reason almost all passenger vehicles (and increasingly more trucks) have moved to a unibody from a body on frame design is because unibodys:

1. Are cheaper to design and build

2. Are stronger while being lighter

3. Their structure can flex while maintaining its stregnth which improves handling as well as long term rigidity (lessening rattles and creaks etc)

4. They dissipate vibration and harshness much better

5. They better incorporate inertia absorption (crumple zones) in the event of a crash

So really and truly my opinion would be that unibodies are safer than body on frame construction.

The negatives for unibody construction are reduced prowess offroad (due to the flex of the structure) and reduced hauling and towing capacity.

Body on frame designs are a thing of the past today for everything but towing, and in time I think they"ll find a way around that. As a matter of fact I think the only car that still has a full frame is the Lincoln Towncar (which is why they are so commonly made into limos)/Crown Victoria/Grand Marquis which is on its way out. As far as trucks, the big pickups/SUVs (F150s, Tahoes & Suburbans) etc. Explorers, the 4 Runner/GX470 and the LandCruiser/LX470. Almost everything is unibody.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...