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 Sidewall vs. Tire Size

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realjwin



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PostSubject: Sidewall vs. Tire Size   Fri Jan 28, 2011 11:41 pm

I think in real life this doesn't really matter much, but is it better to:

-get 17's with a larger sidewall that weighs a few pounds less per wheel

OR

-get 18's with a lower sidewall that weighs a few pounds more per wheel
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acedeuce802

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PostSubject: Re: Sidewall vs. Tire Size   Fri Jan 28, 2011 11:52 pm

I would say 17's, anything lighter is better. In a strictly performance standpoint, saving even the slightest bit of weight on wheels in important. Reducing the rotational mass will definitely help. However, since 18's have a shorter sidewall they may be stiffer, increasing handling performance. All in all, just going from 17 to 18 will probably not make or break a race, however 16 vs. 20? You know which will win.. Usually you start to see a performance loss at around 19 to 20 inches. It also depends on the car. A track ready STI might have 16's, whereas a track ready Miata might have 13's. If you are looking for your own car, go 18's. You will not feel any difference from 17 to 18 (except maybe in ride comfort) and 18's will definitely fit your car better. Hope this helps! Very Happy

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Undertaker4

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PostSubject: Re: Sidewall vs. Tire Size   Sat Jan 29, 2011 1:43 am

also it depends on if you are getting sort or hard sidewalls, if soft for lets say all season tires then go 18, if you get a harder sidewall tire, 17 might be the better choice
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Wallace
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PostSubject: Re: Sidewall vs. Tire Size   Sat Jan 29, 2011 1:52 am

You also have to remember that 1lb unspring weight equals about 4 lbs of sprung weight so wheels and tires that are two lbs heavier per wheel are equivalent to 32lbs of extra weight on the car.

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realjwin



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PostSubject: Re: Sidewall vs. Tire Size   Sat Jan 29, 2011 2:01 am

What about strictly from a handling/cornering standpoint, going from a 35 sidewall (on 18's) to a 45 sidewall (on 17's)? Would it really be a noticeable difference?
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Undertaker4

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PostSubject: Re: Sidewall vs. Tire Size   Sat Jan 29, 2011 2:03 am

if you are going fro straight handling then go for the 17's with a stiff sidewall
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Wallace
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PostSubject: Re: Sidewall vs. Tire Size   Sat Jan 29, 2011 2:12 am

How stiff your sidewall is will depend much more on the specific tire than the size. Kumho v700s with a 50 series sidewall are stiff as shit while Riken raptors with a 35 sidewall will be 50% as stiff. A lot depends on the tires designated purpose. Also a soft sidewalls effect on handling will change depending on suspension type. With double A arm front suspension your loaded wheel will naturally gain negative camber and the negative handling effects of a soft sidewall will not be as noticeable where as with a McPherson front suspension, under load you will gain 1-2 degrees of positive camber. It this situation, a soft sidewall will be extremely noticeable.

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dogbreath

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PostSubject: Re: Sidewall vs. Tire Size   Sat Jan 29, 2011 2:21 am

^ Makes MacPherson FWD cars feel like they're starting to oversteer when powering out on pavement, took a while to get used to when I drove a Celica.
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CreepinE30



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PostSubject: Re: Sidewall vs. Tire Size   Thu Feb 03, 2011 10:16 pm

One thing to note is that stretching a tire reduces sidewall flex and increases handling!
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realjwin



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PostSubject: Re: Sidewall vs. Tire Size   Thu Feb 03, 2011 10:58 pm

Josh, I assume only to an extent...
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Chickababe250



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PostSubject: Re: Sidewall vs. Tire Size   Thu Feb 03, 2011 11:47 pm

.


Last edited by Chickababe250 on Fri May 04, 2012 4:52 pm; edited 1 time in total
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acedeuce802

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PostSubject: Re: Sidewall vs. Tire Size   Thu Feb 03, 2011 11:57 pm

Lol my tires are stretched Razz

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Undertaker4

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PostSubject: Re: Sidewall vs. Tire Size   Fri Feb 04, 2011 12:44 am

you could do Vortex stretch
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acedeuce802

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PostSubject: Re: Sidewall vs. Tire Size   Fri Feb 04, 2011 12:49 am

no

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Chickababe250



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PostSubject: Re: Sidewall vs. Tire Size   Fri Feb 04, 2011 1:00 am

.


Last edited by Chickababe250 on Fri May 04, 2012 4:52 pm; edited 1 time in total
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realjwin



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PostSubject: Re: Sidewall vs. Tire Size   Fri Feb 04, 2011 2:29 am

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Undertaker4

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PostSubject: Re: Sidewall vs. Tire Size   Fri Feb 04, 2011 3:05 am

thats nothing
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Wallace
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PostSubject: Re: Sidewall vs. Tire Size   Fri Feb 04, 2011 4:31 am

too much vw here. Stretched Kumho Ecstas on salad shooters = Facepalm

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Undertaker4

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PostSubject: Re: Sidewall vs. Tire Size   Fri Feb 04, 2011 4:37 am

I posted thid through my phone Very Happy

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acedeuce802

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PostSubject: Re: Sidewall vs. Tire Size   Fri Feb 04, 2011 10:41 am

Ew all this fuckin stretch is making me sick.. stretch is a big no no!

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CreepinE30



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PostSubject: Re: Sidewall vs. Tire Size   Fri Feb 04, 2011 7:43 pm

It's a v dub thing u wouldnt understand with your family car lol! Jk jk
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PostSubject: Re: Sidewall vs. Tire Size   Sat Feb 05, 2011 10:49 am

Hot damn Adam's the man in his family sedan.
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CreepinE30



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PostSubject: Re: Sidewall vs. Tire Size   Sat Feb 05, 2011 11:50 am

https://www.youtube.com/watch?v=3vSe-dxlh9A&feature=youtube_gdata_player
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