what size rims would yeild the quickest times?

[Cirus_93TSI]

im planing on getting a set of rays on my 1g awd , they come in sizes up to 19", im going to get either 17" or 18" and i want to know what u guys think will make the best times, im sure 18s will look better on my car but iv been thinking that 17s will make faster times in the 1/4
so do u think id be better off with 17s or 18s? im mostly concerned with how they will affect my launches and my 60 foot times

 

[silvereclipse]

17s will be faster of course since more of the mass is closer to the center. But i'm assuming you arent an all out hard core drag racer since you are considering 18s. i don't think 18s would make a huge dfference in slowing you down. I'm not a big fan of big wheels on 1gs though, 17 inch rays would look badass. I love all their wheels. Good choice.

 

[13secGST]

u goin with TE-37? I like them...but i wont voice my full opinion so that my rims dont get played out..hehe

I'd go with 17's as well and I would suggest no smaller than 8" width...or even 8.5"-9" depending on the tire you are planning for...btw have you decided on a tire yet?

Process I went through when I bought rims was...1-what width tire do I want? 2-what is the stickiest and most durable tire that comes in that width? 3-Price comparisons with tires 4-Figured out tire...now what rim width do I need? 5-What are the lightest rims that come in 17x8? 6- do I like they way they look...bought.

Back to the question since I got sidetracked...17's will yeild better 1/4 times mainly since the sidewall of the tire is larger and there is more flex there. 18's should yeild better autox times because of a stiffer sidewall...but they wont. The difference is very minimal and I believe in the racing world most people go with 17's...autocross that is, drag is different, f1 is different...also depends on what your doing with the car

 

[cait sith]

Originally posted by 13secGST
u goin with TE-37? I like them...but i wont voice my full opinion so that my rims dont get played out..hehe

I'd go with 17's as well and I would suggest no smaller than 8" width...or even 8.5"-9" depending on the tire you are planning for...btw have you decided on a tire yet?

Process I went through when I bought rims was...1-what width tire do I want? 2-what is the stickiest and most durable tire that comes in that width? 3-Price comparisons with tires 4-Figured out tire...now what rim width do I need? 5-What are the lightest rims that come in 17x8? 6- do I like they way they look...bought.

Back to the question since I got sidetracked...17's will yeild better 1/4 times mainly since the sidewall of the tire is larger and there is more flex there. 18's should yeild better autox times because of a stiffer sidewall...but they wont. The difference is very minimal and I believe in the racing world most people go with 17's...autocross that is, drag is different, f1 is different...also depends on what your doing with the car

Please, never give any reccomendations on Autocrossing again. 18" rims and autocrossing, for the reason of sidewall flex.

Have you even looked at any DSM autocross cars? I mean the ones that are running Kumho's or Hoosier autocross tires, not running some street tires. The vast majority are running 16" rims, and 245's. The only one off hand who isn't running 16" rims is Dennis Grant, who's running 17x9.5 275/40/17 tires on his talon, but lots of weird stuff works for Dennis that doesn't for other guys.

Even if you were running street tires, putting 18's on a car will always be detrimental to the performance to the car, no matter what the size. If your plans are for performance, the biggest wheel you want is the smallest that will clear the brake rotors. That goes for all motorsports, pretty much.

 

[Cirus_93TSI]

ok, thanks for the imput, and yea i am looking at the te-37s
the only 2 reasons i was considering 18s is because im planing on making alot of power down the line and turning them from a stop wolnt be a big problem, and my friend has 17s on his 2g fwd and he can break the wheels lose in second gear by just spoiling up and punching it, so i thought 18s would spin fine if i came off the line with my turbo spoiled with a good awd launch, i figure 18s would be faster after i got up to speed because they have more rolling tread area, but my launch is more important
i was planing on getting the 17s, i just wanted to get some others imput on how they think 18s would affect my cars 1/4 time, i think my car would really good slamed in some 18" te-37s but id rather be faster then look better, so ill definitly go with the 17s
and i think ur right about big wheels on a 1g, the more i think about it my car wouldnt look quite right with big ass rims on it, im not planig on getting a body kit or anything exterior except some rays and covering everything that i possibly can in carbon fiber(u can buy a sheet of real carbon fiber as a kit with the resin and everything and cover anything u want, i was thinking about covering my entire roof that black on most talons with carbon fiber)
thanks again for putting my unsureness to rest, 17s it is

 

[Sotarts]

wtf

 

[Mindslayer]

If you worried about 60 ft times. Why are you going with 17-18-19 inch rims. If it's for hard core drag racing stay with 15 x 8. If you for street racing 16 x 8 would do wonders...

 

[13secGST]

Originally posted by cait sith



Please, never give any reccomendations on Autocrossing again. 18" rims and autocrossing, for the reason of sidewall flex.

That what I was told by some goon...but I did say that 18's wouldn't make the car better at autocross...all the autox DSM's I know...all the guys in my area run on 17x8's. none of them run hoosiers...one guy runs Kumho Victoracers that are ok...Mike C has Falken Azenis's as I do and he also has Toyo Proxes R compound and DOT rated.

Thanks for informing me that 18's will do absolutley nothing for autox I didn't think they would. But everybody I know that runs there car on street, autox, and drag is running 17s

 

[beast_bl]

First of all, the only bearing a wheel has on the speed of your car, is the weight. So unless by some miracle of science, the 18's are lighter that the 17's, I would go with the 17's because it would mean less unsprung weight.

The bigger the wheel, the less sidewall there is. The less sidewall there is, the less runout your wheels will have. Thusly, the bigger the wheels, the better it will handle. It's as simple as that.

Unless you are a hardcore drag racer, where an even smaller lighter wheel would be good, then 17's are perfect. They are light, and their "bling" factor is sufficient.

 

[greathuskie]

i hate the internet for the simple fact that people take the misinformation they read on there as fact, like the post above mine

 

[beast_bl]

Originally posted by greathuskie
i hate the internet for the simple fact that people take the misinformation they read on there as fact, like the post above mine

And I also hate the internet because ignorant knobs like yourself are able to abuse intelligent people with idiotic, uneducated, baseless insults. If you have something different to add to my post, please, grace us with your knowledge. I've worked for a company that makes custom wheels for a long time now, and I believe they're training is a little more in depth that just internet fodder. Oh, fodder means crap. Jerk.

 

[DG-FNR]

Heh, nothing like the Internet and DSMTooners for disinformation.

"fodder" means "food", specifically "animal feed".

So when you call somebody "cannon fodder" you're saying he's food for cannons, ie, someone whose purpose in life is to get shot up.

Now then, sidewall height and performance:

As the height of the sidewall is reduced, the following things happen:

- the spring rate of the tire increases

- the tire gets more responsive

- the tire tends to get more abrupt, ie, the line between "I've got it" and "It's got me" gets narrower

- the tire tends to handle bumps less well

- the ratio of tread width to section width tends to approach 1:1 (ie, a 275 17 will have less tread width than a 275 18)

So all else being equal, one would expect an 18' version of a given section width to have more grip on smooth surfaces, less grip on bumpy surfaces, better response on all surfaces, but be harder to drive. Short sidewall tires also tend to require more attention to detail in suspension setup, and they can be sons of bitches to mount.

I am considering trying a 285 18 on my car, and the primary reason not to is that I'd need to buy new wheels.

So yes, it IS possible to gain performance for autocrossing by going to a larger wheel diameter.

For drag racing though, what you want is a complient sidewall and low rotational inertia. That tends to suggest a tire that has a tall sidewall and a small wheel - a 15" or 16"

One final point - if stuff works, then it's hardly weird now, is it?

DG

 

[DeezNutsForYou]

How does overall tire hight effect our cars. Lets say you compare two different tires on the same wheel. Like a 205/35/16 and a 245/50/16. I know that the 245 would way a little more, so that might mess up our comparison. But with the same gear ratio how would it change your 1/4 mile. Is a taller tire faster or a shorter tire. Saying that both tires are tested on the same car with a 5 speed.

thanks for any input, hopefully someone out there knows more about this than I. All I know is when I when from my stock 16's to a 225/40/18 I could feel the differnce, and not in a good way.