Quote from: DRII on January 21, 2014, 01:24:10 AM
any recommendations for acceptable weight ranges for a 20 in wheel for our cars...
also, does anyone know the 'standard' weight for the 20 in SHO and MKS factory wheels?
The lighter the better!
I would be very happy with 25-28 lb wheels on a car like that. 30 lbs would probably be my ceiling.
BTW, if you do a wheel like a 2 or 3 piece or a forged barrel, the math is not quite the same. There's a part that nobody measures (except perhaps race scientists) where even with a heavy center section, the barrel is very light. Thus the rotational intertia of the wheel is less. Same with rotary forged wheels like the TSW Nurburgring and Interlagos.
Here's a rule of thumb I was taught, and it has never left me:
Less weight = good
Less unsprung weight = better
Less rotational mass = even better
Less unsprung weight with less rotational mass = do it already
Here's some light reading, taken from a decidedly heavier reading article
http://www.camaroz28.com/forums/lt1-based-engine-tech-9/sprung-weight-vs-unsprung-wieght-vs-rotational-mass-63883/