Missing Linc'
Dedicated LVC Member
Do the center cap type deals on these wheels come out?
Question about the 16x7 5 spokes..
- Thread starter Missing Linc'
- Start date
1LoudLS
Dedicated LVC Member
yes, its all one piece around the lugs, the whole cap comes right off, if you get a better picture, you should be able to see a notch where you use the tire iron to pry them off
those look just like the ones on my 1st gen, i thought the offset was a little lower, the center looks like it sticks out further than i remember, but then again that was many moons ago.
those look just like the ones on my 1st gen, i thought the offset was a little lower, the center looks like it sticks out further than i remember, but then again that was many moons ago.
JoshMcMadMac
Dedicated LVC Member
Not necessarily, and rotating mass has a much greater impact on performance.
FASTLLS
Dedicated LVC Member
Exactly.. yes.. centers all around the life comes off
1LoudLS
Dedicated LVC Member
stock for stock, do you really think there will be much difference? these are not any type of "lightweight" wheel.
with all of the rotating parts including the rotor, what do you think that the difference in rotational mass will be in each corner the between the stock 17" and the 16" (also with the 1" less wheel that means you will have 1" more rubber)(yes, I know the metal weights more than the rubber)
it will be a very small percentage of change, couple that with the excess weight of the car and i say that 19 out of 20 people couldn't tell the difference, let alone make much difference on a test track(straight line, or handling through curves)
now a set of 4" wide drag lite's might be a slightly different story
Missing Linc'
Dedicated LVC Member
I have two 17x5 spares for front "skinnies", 20s suck tho
The stock 16 inchers are forged and ~13lbs per wheel. It is a much lighter set-up than the 17 inchers. The rotor and caliper assembly don't add to unsprung weight.
1LoudLS
Dedicated LVC Member
i know the caliper wont count(as it doesn't rotate), but why wouldn't the weight if the rotor count when figuring out difference in rotational mass from option A to B? that seems like an awful heavy chunk of metal spinning around if you are doing physics calculations.
mine sure felt like they weighted much more than 13lbs, they didn't seem too much lighter than the set of mark wheels i had for the summer however it might have just been the snow tires that where on them IDK
Missing Linc'
Dedicated LVC Member
Mine sure feel like 13lbs, I just removed the tires from them..
Apparently my understanding of unsprung weight isn't correct then. I always thought that any part that didn't somehow ride on the springs was considered unsprung and contributed to the unsprung weight. This would include the rotor and caliper assembly as well as various suspension and steering components.
someone skool me please.
thanks
I sit corrected.....
The calipers are already aluminum so the real weight would be the rotor. The caliber isn't very heavy at all. The ~15lb difference in the weight of the 17" and 16" wheels is of greater "concern".
Missing Linc'
Dedicated LVC Member
The way I do things is simple, rotational mass vs non-rotational. Driveshaft, gears, axles, rotors, wheels and tires. Everything else is just regular weight.
JoshMcMadMac
Dedicated LVC Member
Do you have any actual numbers on that, or is it a guestimate?
Nothing other than what Jonathon Crocker told me in 2001. Jonathon was the head suspension engineer for the LS. He used to be a suspension engineer on Michael Schumacker's team.
1LoudLS
Dedicated LVC Member
That has always been the way that
I understood it.
well that is definitely good enough for me, you really cant argue with the guy in charge of doing all the math!
JoshMcMadMac
Dedicated LVC Member
So he knew what they intended...but that does not guarantee that it is how they were produced. Can someone just put it on a scale so we actually know?
cammerfe
Dedicated LVC Member
Rotational mass is certainly a matter of concern, but unsprung weight---including the brake assys. and the tires/wheels---also has a considerable effect. They aren't the same, but both emphatically have to do with the behavior of the car.
KS
KS