The less unsprung weight you have, the better the handling will be. Less unsprung weight will give better turn in, improved steering sensitivity (will feel much lighter), shorter braking distances, increased brake life, etc. You will feel the road a bit more, which is where the suspension comes into play. With less unsprung weight, the suspension has to deal more with the road conditions, rather than the tires.
Since the 19. 5's on steel wheels weigh so much more than the 16's, you're definitely going to go through brake pads, shoes, rotors, etc. much faster, and turn in is not going to be as sharp. The road feeling will be improved/more noticeable simply because of the stiffness of the tires. The response will be slower.
I love the look of the 19. 5's but I'm concerned about some of the ramifications of the handling, as well as snow/ice traction. These are a couple of the reasons I'm staying with 16's.
Just my 2 pesos abridged to the nearest penny.
Regards,
-Mark Nelson
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Incline Village, Nevada
Quattrosport, Inc.
http://www.quattrosport.com
'99 3500QC 4x4 ISB 5-spd, 3. 55 LSD, Bright White, MCM Legacy shell, Tekonsha Sentinel brake controller
'97 Haulmark 24' race trailer
[This message has been edited by Mark Nelson (edited 10-25-1999). ]