Showdown On Wilshire Blvd Sl55 V 360 Spyder
i would have thought the same about the rims, but i literally put the tires on a couple hours befor the race. there was absolutely no slip when i took off with the 20's. when i would try to take off before i put on the rims, the car would always skid before it actually took off. i guess once my tires are worn out (which should be in a couple thousand miles the way i drive) the weight of the rims should play more of a factor than it did when i first got it. if im wrong please correct me.
Rotational mass, especially unsprung, is independant of the condition of the tires; i.e., worn/full tread/etc. While a stickier tire will aid in acceleration (lateral (cornering) and horizontal (braking & acceleration) it will not, noticably, impact your rotational mass -- you had better off the line traction b/c your tires are now larger (read: wider).
Your wheels, are chrome bricks, but the greater point is that since they're larger, they place the weight further outside of the axis of rotation, and actually require a greater amount of torque to be moved. This is in addition to the fact that they're that much heavier, but I'm pointing out how the problem compounds(torque = force x distance; force = mass x accelleration, as you can see as mass goes up, acceleration will have to go down. Physics: laws, not just a good ideas.)
By the way, street racing doesn't mean jack. If you think you've got a pair, then please email me offline, and bring your sl to the next track day (I'll be glad to instruct you, if you're a novice) and then we can then talk about your cars "actual" performance.
Be safe on the street, or you may just end up killing someone; a 4400lbs lanyacht slamming into anyone/anything with the momentum it can acrew, at wide open throttle, b/w street lights is a lethal proposition.
Last edited by hugh; Jan 29, 2004 at 11:55 PM.
Rotational mass, especially unsprung, is independant of the condition of the tires; i.e., worn/full tread/etc. While a stickier tire will aid in acceleration (lateral (cornering) and horizontal (braking & acceleration) it will not, noticably, impact your rotational mass -- you had better off the line traction b/c your tires are now larger (read: wider).
Your wheels, are chrome bricks, but the greater point is that since they're larger, they place the weight further outside of the axis of rotation, and actually require a greater amount of torque to be moved. This is in addition to the fact that they're that much heavier, but I'm pointing out how the problem compounds(torque = force x distance; force = mass x accelleration, as you can see as mass goes up, acceleration will have to go down. Physics: laws, not just a good ideas.)
By the way, street racing doesn't mean jack. If you think you've got a pair, then please email me offline, and bring your sl to the next track day (I'll be glad to instruct you, if you're a novice) and then we can then talk about your cars "actual" performance.
Be safe on the street, or you may just end up killing someone; a 4400lbs lanyacht slamming into anyone/anything with the momentum it can acrew, at wide open throttle, b/w street lights is a lethal proposition.
Good kill!
Good write up. When street tires are brand new, they are greasy (mold release and stuff) and have no traction until they get 100 or so miles on them. The added weight of the wheels kept even the new shoes from slipping.
Good kill!
The new more massive and larger (in diameter) wheels simply raised the threshold for traction control activation; as in, say for t/c to come on requires slip detection at a power output of, oh, 350ft/lbs. Well, with the new mass, the same amount of torque no longer cause the same degree of slip; therefore, t/c doesn't bog the acceleration.
You do see how this is totally unrelated to any effects of the wheels mass "pushing down" on the new/greasy tire. Right?
of course we know whay the yellow ferrari means ... hes lacking something in his pants.
Ever since i got my sl55 i have wanted to do 1 thing ... race a ferrari. well i finally got my chance. I finally picked up my car from the body shop (just added lorinser rims and bodykit . will post pics soon) and i pulled up next to this yellow 360 spyder. the guy driving looked like a young dot comer, and he had a real good looking girl next to him. of course we know whay the yellow ferrari means ... hes lacking something in his pants.
mike
You are good. In that short amount of time you figured out what the driver of the Ferrari does, what his size is, and how fast his car is !!!!
The Best of Mercedes & AMG
Mold releasing agent really hasn't got that much to do with it. The added traction by way of a wider tire resulted in less slip. Invoking traction control systems into the equation, and why they didn't cause the car to bog (like it had in the past) can be attributed to the weight of the wheel, solely, but this is independant of how the added weight of the wheel may have "pushed down" on the tire. That idea is absurd.
The new more massive and larger (in diameter) wheels simply raised the threshold for traction control activation; as in, say for t/c to come on requires slip detection at a power output of, oh, 350ft/lbs. Well, with the new mass, the same amount of torque no longer cause the same degree of slip; therefore, t/c doesn't bog the acceleration.
You do see how this is totally unrelated to any effects of the wheels mass "pushing down" on the new/greasy tire. Right?
If all other variables (tire width, compund, rim mass and offset) were equal to their known stock values, the new tires would have provided very little grip due to the presense of the mold release. Traction control would have been activated and power greatly reduced.
My earlier comment was based on the the fact that even with added lack of traction from the mold release, the tires still did not spin. Therefore, the added negative effect of the rims had a surprisingly larger impact on the overall wheel spin equation.
BTW, I didn't see in the original post that the tire size was increased to 305 which could also be a big reason why the tires didn't spin.
Greg
i would love to learn how to drive my car.
but once you started calculating everything about my car like that, you lost me completely.
what happened to pressing the gas, going faster than the other car and saying hooray for beating his a$$.
i didnt know what i was getting myself into with this thread, next time ill leave out all the details and assumptions (ie. yellow ferrari=small package).
i am definately a novice.
i would love to learn how to drive my car.
but once you started calculating everything about my car like that, you lost me completely.
what happened to pressing the gas, going faster than the other car and saying hooray for beating his a$$.
i didnt know what i was getting myself into with this thread, next time ill leave out all the details and assumptions (ie. yellow ferrari=small package).
Greg: I apologize if you felt my tone was hostile. It wasn't, but when trying to get a point accross, I chose to be direct v. flowery and prose-like.
OKHJOON190: Like I said, if you'd like to participate in a track event, email me offline. I'll gladly point you in the right direction, and will gladly help you with instruction (personally) or reccomend someone to you. And please, do keep the assumptions out of it (re: ferrari's). It's not fair to those that have a passion for the cars.
Regards to all.
Last edited by hugh; Jan 30, 2004 at 03:33 PM.
Greg: I apologize if you felt my tone was hostile. It wasn't, but when trying to get a point accross, I chose to be direct v. flowery and prose-like.
Regards to all.
Greg
No comparison should be made to each other, each has its pros and cons.
Now, I am not sure if my package is big or small, I guess it could change sized depending on what car I am in, all I know is that when I am in the yellow car, more girls want to see it

Adam
I drive a Yellow 360 Spider and a CL 55 (also with 20" LM6 Rims)
No comparison should be made to each other, each has its pros and cons.
Now, I am not sure if my package is big or small, I guess it could change sized depending on what car I am in, all I know is that when I am in the yellow car, more girls want to see it

Adam
cant we all just get along?
Bottom line. The 360 and the sl areboth great cars in their own way. they both have positives and negatives. You just have to learn to deal with it. everyone has a reason why they choose one over the other.
If you cant afford to drive one just admire it.
You guys make me laugh, I still own a sl55 and its a great car in a straight line. But BORING, smoke a 360, HELL PUT THE CRACK PIPE DOWN. Usually one would think that a Ferrari owner would be the one that needs a ***** extension, but you sad folks are in need of a sex change, bunch of women. Hell a Ferrari is a Ferrari, I own a 355, and you know what the wife drives the sl55, I will keep driving the 355. Bunch of losers on this site of *****s.
If you cant afford to drive one just admire it.
What a tool.
You guys make me laugh, I still own a sl55 and its a great car in a straight line. But BORING, smoke a 360, HELL PUT THE CRACK PIPE DOWN. Usually one would think that a Ferrari owner would be the one that needs a ***** extension, but you sad folks are in need of a sex change, bunch of women. Hell a Ferrari is a Ferrari, I own a 355, and you know what the wife drives the sl55, I will keep driving the 355. Bunch of losers on this site of *****s.
If you cant afford to drive one just admire it.
OKH was just sharing a story about a kill he had. If you weren't the snobby little B*tch you are, you might realize why anyone with the same encounter would post the story. Ferrari has long been a name associated with performance and prestige, and to beat such a wonderful car is cause for celebration.
And I'm Sorry, but unless you have a special edition, your wife's SL55 goes for more than your F355 right now.....

i do not agree w/ his whole making up for something in the pants comment, but that gives you no right to bash on the members of this board. please get rid of your 355, so i can feel that the owners are driving enthusiasts, not some stuck up snob who thinks everything else is inferior. perhaps then i may consider the car.....
Last edited by anerbe; Feb 2, 2004 at 09:49 PM.
You guys make me laugh, I still own a sl55 and its a great car in a straight line. But BORING, smoke a 360, HELL PUT THE CRACK PIPE DOWN. Usually one would think that a Ferrari owner would be the one that needs a ***** extension, but you sad folks are in need of a sex change, bunch of women. Hell a Ferrari is a Ferrari, I own a 355, and you know what the wife drives the sl55, I will keep driving the 355. Bunch of losers on this site of *****s.
If you cant afford to drive one just admire it.
get a life



Nice kill.
You are like a genius.