Suspension/Wheels/Tires/Brakes

Undersized tire on an oversized wheel?

Old 07-04-04, 03:06 PM
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Undersized tire on an oversized wheel?

I keep seeing people using tires that are way too skinny for the width wheel they're using. For instance, stretching a 225 tire onto a 10" wheel.

Why? I can't see any reason to. It looks silly, can't be good for handling, and makes your wheels more susceptible to potholes and curbs and such.

Like http://www.teamfc3s.org/forum/showth...threadid=31301 , I guess I just don't get it.

Victor
Old 07-05-04, 07:41 AM
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Current "drift" fad...

I'm against it too.


-Ted
Old 07-05-04, 09:22 AM
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l33t JDM yo.

i do like the look though. duno what it is. but i also light fatter tires than the wheel... and i also like a nice straight sidewall right up from the rim...
Old 07-05-04, 10:15 AM
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Actually it's probably good for handling. The wide rim will probably support the tire so well that lower tire pressure can be used. Lower pressure means more rubber on the road with less stress per square inch.

But forget about potholes.

I'm not too crazy about the look but I prefer 15 inch wheels for performance anyway. It's not easy to find a 15 inch rim wider than 8 inches. I'm quite happy with 205/50/15 on a 7 inch rim for the racetrack.

ed
Old 07-05-04, 11:44 AM
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The tread of the tire is only so wide, mounting it on too wide a wheel doesn't make sense and is bad for handling.

Why carry around the extra weight of a wider wheel if you're not going to put it to use?

Tires have a defined tread face; not just in the rubber but in the carcass as well. No matter what size wheel you put it on or how little air is inside the tread face is only that wide.

Tire makers actually design the carcass of the tire to work within a set of given conditions. One of them is that the sidewalls be nearly vertical, not highly slanted because the beejeezus is being stretched out of them (same goes for cramming a wide tire on too narrow a wheel). The sidewall construction determines many of a tire's handling characteristics and royally screwing it up will hurt tire performance.

It's basic common sense to mount tires onto the width of wheel that is recommended. Just because you can make a tire fit on a wheel doesn't mean you're doing it right.
Old 07-05-04, 03:53 PM
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Yes. That's why I was going with 255s on 9" wheels, not 205s like some jackasses are trying to tell me.
Old 07-05-04, 08:59 PM
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Originally posted by edmcguirk
Actually it's probably good for handling. The wide rim will probably support the tire so well that lower tire pressure can be used. Lower pressure means more rubber on the road with less stress per square inch.
Your statements are dangerous.
I've inspected a few of these set-up's, and it's scary to see the tire "rolling over" to the sidewall on heavy cornering.
The tire is not designed to ride half-way up it's sidewall.
I'm talking beyond the tread blocks; the tires show scuffing on the LETTERS on the sidewall.


-Ted
Old 07-06-04, 07:49 AM
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Up to a point it's good... most tire engineers will tell you that tires work best on the high end of the *recommended* wheel width range (which they publish).... i'd say the tires in the thread above are FAR, FAR beyond that range though. Thats just stupid ****.
Old 07-06-04, 09:09 AM
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less pressure will not put more rubber on the road, it puts less down, the tires will bow up in the middle, always inflate your tires to the recommended pressure for full traction

Last edited by niburu; 07-06-04 at 09:12 AM.
Old 07-06-04, 10:21 AM
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No, no, no, no...




-Ted
Old 07-06-04, 11:13 AM
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WOW!
Old 07-06-04, 11:42 AM
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Wow. Just. Wow.
Old 07-06-04, 06:55 PM
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i do it for cosmetic reasons. a 17x10 +12 looks a **** load better than 17x7 +40 junk. you can fit a wider wheel with lower offset without rubbing much. some dig it, some dont. not a big deal.

btw my friend who i borrowed those wheels from has had them on his car for 2months now. 2 drift events and alot of time beating it on the streets not a problem. no bead seperation or anything.

btw they do it in japan sooo it must be better right? hahaha
Old 07-06-04, 08:14 PM
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Originally posted by S13 Slide

btw they do it in japan sooo it must be better right? hahaha
Just like those pick-up silvias their mad quick yo.
Old 07-06-04, 09:27 PM
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Originally posted by S13 Slide
i do it for cosmetic reasons. a 17x10 +12 looks a **** load better than 17x7 +40 junk. you can fit a wider wheel with lower offset without rubbing much. some dig it, some dont. not a big deal.
Why not go with 17x9 +35? With a tire that makes all that wheel worth it?

I just don't get it, like I said. The wheel barely physically fits and then to make up for it you get a skinny *** tire.

Blah. I just don't understand the logic at all. Don't you think a fatter tire looks better than some skinny bullshit anyway?

Last edited by $150FC; 07-06-04 at 09:31 PM.
Old 07-07-04, 06:06 AM
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LOL: there are times when you are surprised by the level of stupidity of some people.
Old 07-07-04, 01:47 PM
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it's called "German style" go see the VW Audi guys in Europe, it's common as hell
Old 07-07-04, 01:54 PM
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i have coilovers and you cant fit a 9j +35 up front. dunno how it works with spring/shock types.

with that perticular wheels the 9j looks like ***. the 10j has a very attractive bend or curve of the spokes like the te37 with good offsets. if you went with another wheel you'd have a nice huge lip. which is all for looks cause your only gonan have a ***** lip or flat chest with a 9j +35.

i havent driven on the 10j w/ 225's but my car has 17x9 with 215/15. its alot more responsive, less slop, break away is nice and predictable. not to mention i dont have the power to spin a 235-265 tire. when guys start making more power they step up in the tire sizes.

im not trying to convert everyone to run low offset wide wheels with skinny tires. your car you do what you want. these are just my reasons on why i do. which is mostly cosmetic hahah im a drift poser.

btw my junk $50 pair that only go on when i want to waste the tires on em....

17x7.5 +42


same wheel with a 32mm spacer to flush it up, still junk but it looks better.
Old 07-07-04, 02:37 PM
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Some people have no clue on what upsprung weight means.

The white FC above has noxious amounts of negative camber in the rear which will eat tires like crazy prematurely.
It's not recommended to run negative camber in the rear like that.
It's unsafe.
It hurts straight-line acceleration.


-Ted
Old 07-07-04, 02:54 PM
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the pic is old and i was just testing out what a ton of rear camber feels like. it made the car too loose for my tastes. strait line acceleration doesnt mean anything to me.

i searched google and howstuffworks for "unsprung weight" and only came up with site that say less unsprung weight = better handling, braking and less stress but they dont explain anything. any good links?
Old 07-07-04, 03:00 PM
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Originally posted by S13 Slide
these are just my reasons on why i do. which is mostly cosmetic hahah im a drift poser.
I think that comment sums everything up nicely.
Old 07-07-04, 03:30 PM
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Originally posted by RETed
Some people have no clue on what upsprung weight means.

The white FC above has noxious amounts of negative camber in the rear which will eat tires like crazy prematurely.
It's not recommended to run negative camber in the rear like that.
It's unsafe.
It hurts straight-line acceleration.


-Ted
I still dont consider it no where near as bad as the car on top. Now that camber is HORRIBLE, but he says he was just testing. I personally think it looks pretty good, some 225s would fit nicer, yet to his their own.
Old 07-07-04, 03:37 PM
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32mm spacer???
Old 07-07-04, 05:16 PM
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Originally posted by S13 Slide
strait line acceleration doesnt mean anything to me.
You really should stop posting anymore...


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Old 07-08-04, 01:36 PM
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Re: Undersized tire on an oversized wheel?

Originally posted by $150FC
I keep seeing people using tires that are way too skinny for the width wheel they're using. For instance, stretching a 225 tire onto a 10" wheel.

Why?
Stupidity. No deeper reason than that.

Last edited by PVerdieck; 07-08-04 at 01:44 PM.

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