Is the weight of the wheels really going to make such a big difference? we are talking less than the weight of 1 person here

when i get my 17/18s ill just ride wif less ppl in the car >>


I would have thought the extra rubber would make more diff than the extra weight.

That's what I was thinking before, but now I've seen the difference, I can tell you there's a difference.
With 23 lbs 17s, I saw a big difference
With 16lbs 17s, I didn't saw any !

The thing is that this is not static weight, it is weight that have to get in rotation to get the car to move. I've already read somewhere , i don't remember the numbers exactly, but i think 10 lbs more on your wheels equals to 40 lbs of static weight in your car. It may not be the right numbers, but it show the ways it works.....ok, it is not that a big diff, but when you race, it is a big diff....

Yeah I got ya man.

Not going to stop me though >> our cars look too weak with small wheels!

It's that age old concept of rotating mass >> The lighter the parts that are moving, the easier it is for them to rotate, the less work to get them moving, all equals more power output in the same amount of rotations >>

WHen i put my 17's on, compared to stock you can definately feel that its easier to maneuver, and you'll slow ur acceleration down with heavier wheels, but other than that it wont make soo much difference. Its liek a flywheel - heavier it is, the less power reaches the wheels.

WOO HOO 300!

This post has been edited by Supersprynt: May 2, 2003 - 12:40 PM

Okay I was just wondering, does the weight of the tire play into this at all I havn't heard any talk of this but I was wondering because I am getting 16's that weight 18 pounds a piece and for every inch you go up on a wheel the tire surface gets smaller and smaller so could a 16 inch 18 pound wheel with a low pro tire weight the same or mabey even less than the stock 15's with a normal radial tire? It seems like this would make sense to me. So can somebody please explain this to me, besides a lot of drag cars that run with street tires run with 16's or 17's.

I really don't know what the difference is with normal street tires, but I know it affects the lap times for f1's >>

i know that bigger rims will make the car slower but in my case i would like to know your thinkings..... i have now 205/55/r15 rims and i got now new 17s with the 215/40/zr17 falken tyre and lets say tha my car now makes the 400m in i dont know 13,5s after i change the rims how much time will i lose?

This post has been edited by maikl: May 3, 2003 - 8:31 AM

QUOTE

know that bigger rims will make the car slower but in my case i would like to know your thinkings..... i have now 205/55/r15 rims and i got now new 17s with the 215/40/zr17 falken tyre and lets say tha my car now makes the 400m in i dont know 13,5s after i change the rims how much time will i lose?

Probably none, as those 2 tires are the same height, you may even gain a little, if the tire/wheel combo weighs less than the old ones. should handle better with the lower profile tire. if you have a scale could you weight both and let us know? also which 17" wheel you have?

i just got the mim rims they are from italy and they are weight less than my stosk ones that is for sure

check this out..

wheelweights.net

I've always thought that when my current tires wear out I'll upgrad to a set of borbet type T 16x7.5..

but at 21lb a wheel that's 5lb heavier than my stock wheel so now I'm not so sure..>>

WOW! A 16x7 weighs anywhere from 10.8 (Racing Harts- cp-035r) to 25 lbs (ROH illusion)? I knew they varied a lot. I had no idea the spread was that wide. No wonder people like their Racing Harts...

Whoever found it, thats a great site.

yep, and the SSR wheels are among the lightest.. no wonder they go for >$300 a piece at tirerack!!!!!!!!