wheel weight

[freekwonder]

how much would the stock steel 15's weigh. in know the racing harts/dunlop weigh in about 40lbs (to ******* heavy) because this is my question. HCI February issue has a write up on how wheel wieght effects power.

they had two wheels OZ wilcards and Volk TE37 both were 17x7.5 and they were running R3S03 Hoosiers.

OZ wildcard VOLK TE
Wheel 21.625 15.500
wheel/tire 37.500 31.437

and if you look at the dyno of the test car the OZ (heavier) were anywhere to 5 - 2 horses lower the Volks (lighter)

so whats the hole point of this post:

1. to tell you guys **** *** for not looking at my reply in the DYNO DAY post.

2. to tell you that wheel wieght will effect the dyno and power (unsprung weight) our dunlop/racing hart combo wieght in about 40lbs THATS HEAVY

so because of the heaveir wheels we are losing a few horse at the wheels. at 18% loss we should be getting AROUND 115 at the wheels (around give or take a few) if you figure we lose around 2 - 5 horse for the heavy wheels we are looking AROUND 110 (give or take a few horses)

again they even went to Laguna Seca and the heavier wheels were around 0.40 secs slower lap times.

so in closing. QUICK THE BITCHING AND FIGHTING we are posting low dyno numbers because of the heavy wheels and 40lbs is heavy. also i would like to say **** *** TO MOST OF THE PEOPLE ON THIS BOARD. most of the people on this board are most ricy, whinny, childies people i have ever seen. Not all the people are (you know who i am talking about.) everytime i have posted a message to help people out it got ignored. so **** off.

to the people who run the board Thanx for making it man you guys rule. to the people who are ruining the board **** OFF. lata.


took out the bad stuff. sorry guys

[ 01-22-2002: Message edited by: freekwonder ]

 

[C Rae]

well said
good point

?

 

[fano]

so what are some lighter alternatives that are worth it? by worth it i mean not 1 or 2 pounds lighter and look decent.

 

[jsesq]

I have never heard anything bad about the TE37's. I know the guys at Sport Compact Car seem to love them. But they are expensive.

I also think that the white wheels would look cool with the blue car.

 

[70]

Throwing a hissy fit...Nice.

As for the wheels, heavier wheels add to rotation mass and unsrpung weight. Yes...Does that effect horsepower? In a way yes. Becuase some of the power is going to be used to get the wheels rolling.

Why would you want to screw up the handling by going to 15" steel wheels?? There are plenty of altenratives in the 17" range that weigh less. Even in the 16" range.

I saw another article in a different magazine that tested different wheel sizes and times. The also tested acceleration. The bigger and wider (heavier) wheels actually handled better than the smaller (lighter) wheels. And actually, some of the middle sizes accelrated faster than the smaller wheels.

There is always a trade off.

What wheels to get?? That is the tough question. Really light weight wheels tend not to be as nice lookingand considerably more expensive. There is going to be a sacrifice when you go to light wheels.

If want all out light wieght, I'd look into Panasport street wheels or Revolution wheels. If you want something that looks good but is gonna weigh more get the Volks.

 

[mp3_moran]

Rota circuit8's and subzeros are both inexpensive and relatively lightweight.
The Circuit 8 looks like a Mugen MF8 and the SubZero looks like the Spoon SW388/ Desmond Regamaster.

 

[freekwonder]

ChrisS - i know wider tires are going to handle better than smaller tires. my purpose of the post (what you missed) was to just show why we are posting low dyno numbers and high 1/4 mile times. if you want to Auto X get lighter rims that are the same size. if you drag get some lighter smaller wheels.

 

[70]

You are right, I missed the point becuase I kept seeing "**** YOU" all over the place and stopped reading.

No biggy though.

 

[freekwonder]

ChrisS - sorry its just everytime i have posted a message trying to help people out, (warranty, dyno..) it gets ignored. and im just tired of seeing people bicker like little children on this bored. i know the age on this bored various, but sometimes i wonder about the maturity level. so like you said no biggie

 

[<Cool....>]

Alrighty then, now that that's covered, anymore ideas on super ligth wheels??

 

[ARD MP5]

I feel you on that. I've been telling MP3 guys that from day one. That's the first thing I tested when I got my hands around one. My protege5 wheels are light. You guys should swap wheels and go to the dyno and check the difference.

The RH's are like 22lbs. ea. When we weighed them they were more than 40lbs. Then we put some 19's on it with some wider and taller diameter tires, it weighed less. Believe that. They weren't forged wheels either.

Your best options are the Rota Subzero, OZ Superleggerra, Tenzo's, Volks, SSR's, Advan's, several others. I can get you guys any of these wheels, just ask. I'll probably get you the best price too. Sell the damn RH's to Protege5 owners and get some lightweight wheels, along with some GC's to gain some height adjustment or just get the Eibachs. Increase the spring rate only slightly and lower it only an inch. That would be a great setup.

I run 15" volks on my supercharged miata and they only weigh 10lbs. I love them.

I am putting together a deal for the forum guys on the Rota's, any of them. I got specs as to weight and so forth. We are a Volk Racing wholesale distributor and carry everything.

Rishie

PLEASE BE GENTLE ON THE EARS THOUGH, THAT's some serious s*** mouth you got going on. How old are you? Being a little BOLD aren't ya? I feel ya, but not in so many words. hehe.

 

[freekwonder]

sorry about the bad words everybody. thats what 4 years in the Marine Corps will do to you. When we get pissed we dont hold back.

 

[ARD MP5]

That's cool, it happens to the best of us. At least you are adult enough to apologize, cause my eyes are sensitive to this s***. j/k. I swear left and right when with my friends, but I treat these forums like they're censored. hehe.

See ya, Rishie

Don't worry about people who aren't open to info. They don't deserve it and will pay the consequences with their maldecisions.

 

[cfbjr]

Weight effects the rotating mass and unsprung weight yes, but larger diameters have a positive effect on handling (but only to a certain point). I have seen tests in mags like Grassroots Motorsports that show this. They come to the conclusion that 16" are a nice compromise between the size vs. weight vs. handling issue. Although some of the testers preferred the 17's above all because they were willing to give up a little power for additional handling. Rishie's on the right track by suggesting the lighter wheels in sizes closer to the stock 17" size. That way you drop the weight and don't negatively effect handling.

 

[freekwonder]

maybe we could get a list in the tech forum of some nice light weight wheels. then a list of sizes for drag racing and then a list for autox i think im just going to keep my Racing harts for looks but get a nice light set of 16's for racing.

 

[cfbjr]

I don't know if you are a drag racer or an autocrosser but remember, you have to stay with the original size wheel (width and diameter) if you want to run the stock class! And there aren't a whole lot of options as far as DOT approved "racing" or "autocross" tires in the 205/40or45 -17 size! I have found the Hoosier A3S03 ($180 ea.) and Toyo Proxes RA-1 ($160 ea.). The best choice for this type of tire is the Kumho Ecsta V700(much cheaper than the above listed choices) which Kumho lists in the 205/40-17 size on their website but nobody, including tire rack have in stock yet. I guess it's a new size. With the 16's you could run STS. The advantage MP3's have is that they can run stock class (GS) with many of the mods allowed in STS because our cars came stock with the suspension upgrades. Not that we couldn't possibly be competitive in STS as well.

 

[cjstringer]

reviving a dead thread

ARD, you said you are able to get a good deal on a volk 17x7 maybe? If I missed this elsewhere, I apologize, but if you have a deal on those or any other, please let me know. I am about to buy some P5 16s for day to day, but would really like some lighter 17s for autoX, and could really use a good deal. Sponsor money is tight, and noone wants to give it up right now.
Let me know what you came up with! If you don't wanna post it here, email me at cjstringer@yahoo.com.

Thanks.

 

[vegasmp3]

I think you are wrong......The racingharts do not weight 40lbs....Racinghart makes the lightest rims out there........I think they weight around 23 lbs........Seventeen inch rims will not weight 40lbs.

 

[cjstringer]

I think the 40lbs was the tire/wheel combo. If I could drop 5-10 pounds a corner I'd love to gain the power off the corners. Wouldn't it also improve breaking?
I've seen some 17s that weigh about 9.5lbs. That's damned light, but also $1500 for 4 of them. I can't afford that.