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> what tires sizes?
what tires sizes?
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cwmizner
post Oct 21 2009, 08:53 AM
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picked up a 2006 bmw 330i sedan sport package.

18x8 in front, 18x8.5 in back

stock 225/40 in front, 255/35 in back.

staying in DS for a while, stock shocks for a while, maybe front sway bar

street tire 1, will be only set of tires

235s are 0.3 in taller
255s call for a 8.5in width, so little bit of a cheat on the 8in front
265s are 0.3 in taller plus call for a 9in width, so same 1/2 in cheat

dunno if i want to go taller on one end without the other end (option 3 and 5)

i think my order of preference is option 2, then option 1, then option 4.

what sizes would you go with? welcome any comments to why you picked what you picked.

thanks!


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ULLLOSE
post Oct 21 2009, 09:38 AM
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Keep that car square, regardless of the wheels width. Pinching the fronts will help buy you a little more tire life on the front, it rounds the edges - if you have not checked there is very little camber to be had in the front. mad.gif

We ran 265-35-18 all around on a 335i with the same size wheels. But you have a great deal less Tq, so I doubt you will want a taller tire.


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BWeikert
post Oct 21 2009, 05:35 PM
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You can fit 275's on 8" wheels without too much trouble (Mustang came with 17x8's for many years).

I'd go with 255/255 for the height, fitting those will be no problem at all.


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cwmizner
post Oct 21 2009, 05:37 PM
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how do you think the 255s in FRONT will behave on the street?


oh, and what's up with all you 255/265 people? just figure get the most tire you can?


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Chad Mizner
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berny2435
post Oct 21 2009, 06:16 PM
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I say 255/265s reason, It's a BIMMER and they are DD rims and tires and I think the front Buldging compared to the rear is going to look retarded. Might as well bludge them both a bit. If you get a set of cheapy spare rims, run a square setup then for ideal handeling.

I saw some BMW rims on craigslist today as well.


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renfield90
post Oct 21 2009, 06:31 PM
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QUOTE (cwmizner @ Oct 21 2009, 05:37 PM) *
how do you think the 255s in FRONT will behave on the street?


oh, and what's up with all you 255/265 people? just figure get the most tire you can?

Yeah, I'm a "get as much rubber under there as possible" kinda guy. Dirty little secret, I'm running 195s right now though...

My second vote would be to keep them square at 255. All the other options are just silly. smile.gif


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Mike Rogers
post Oct 21 2009, 07:24 PM
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QUOTE (cwmizner @ Oct 21 2009, 08:53 AM) *
picked up a 2006 bmw 330i sedan sport package.

18x8 in front, 18x8.5 in back

stock 225/40 in front, 255/35 in back.

staying in DS for a while, stock shocks for a while, maybe front sway bar

street tire 1, will be only set of tires

235s are 0.3 in taller
255s call for a 8.5in width, so little bit of a cheat on the 8in front
265s are 0.3 in taller plus call for a 9in width, so same 1/2 in cheat

dunno if i want to go taller on one end without the other end (option 3 and 5)

i think my order of preference is option 2, then option 1, then option 4.

what sizes would you go with? welcome any comments to why you picked what you picked.

thanks!


225x45x18 works for me laugh.gif laugh.gif laugh.gif


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cwmizner
post Oct 21 2009, 08:11 PM
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guy on e90post.com said:

265/275 is like the norm for competitive autocrossing on 8 inch rims, and people do 285/295 on 8.5 inch.


don't we have a thread discussing wide tires on skinny rims?


(not that i'll go that crazy, just interested in reading the prior discussion...)


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wkohler
post Oct 21 2009, 10:40 PM
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Get another set of front wheels. I've run my 535 (granted it's 22 years older than yours) with staggered wheels/tires and it sucked. Understeer was the understatement of the minute.

That said, I have no real knowledge of anything.


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cwmizner
post Oct 21 2009, 10:50 PM
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QUOTE (wkohler @ Oct 21 2009, 11:40 PM) *
Get another set of front wheels. I've run my 535 (granted it's 22 years older than yours) with staggered wheels/tires and it sucked. Understeer was the understatement of the minute.

That said, I have no real knowledge of anything.



smile.gif

to remain in stock i can't alter my wheel widths.

however your point on understeer, along with the height delta between a 255 and 265 are why I'm 99% getting 255s all around


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wkohler
post Oct 22 2009, 12:57 AM
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Given that the rear wheels are only .5" wider than the front, I don't see the problem with that. Plus, it will give you cool stuff to mention at parties.


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08scooby
post Oct 22 2009, 03:29 PM
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I am a get as much as you can on the rim guy, but does that newer bmw have stability control? if it does, you are going to have to keep the height of the tires the same front to rear. if not as soon as you start to move the car, the wheel sensors are going to see differant wheel speeds. so the computer will start to apply bracking force to try and correct the "slipage" thats not there.
Or you could turn off the vsc every time you get in your car, like i do. biggrin.gif


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wkohler
post Oct 23 2009, 02:40 AM
Post #13





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That's something I was thinking about today. This would probably be more of an issue if you had say a 9" wheel in back, but if you were to put the same sized tire on wheels of two different widths, wouldn't they have two different overall diameters? It would probably make little difference, but it's a thought nonetheless.


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cwmizner
post Oct 31 2009, 07:32 AM
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QUOTE (cwmizner @ Oct 21 2009, 06:37 PM) *
how do you think the 255s in FRONT will behave on the street?



comments here?

i think i might wuss out and just get stock sizes, how many tenths are the 255s going to buy me? 1? 2? do i need them to win ST1? hmmmmm, probably! i can agonize over any decision laugh.gif laugh.gif


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renfield90
post Oct 31 2009, 10:37 AM
Post #15





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QUOTE (cwmizner @ Oct 31 2009, 07:32 AM) *
QUOTE (cwmizner @ Oct 21 2009, 06:37 PM) *
how do you think the 255s in FRONT will behave on the street?



comments here?

i think i might wuss out and just get stock sizes, how many tenths are the 255s going to buy me? 1? 2? do i need them to win ST1? hmmmmm, probably! i can agonize over any decision laugh.gif laugh.gif

What do you mean by this? Are you concerned about safety i.e. the car becoming too oversteery for the street?

If the car doesn't come with traction or stability control...I don't think it's seriously a problem unless you're driving at the limit or being stupid. People on Celica forums always complained that the Hotchkis competition bar was too stiff on the rear and slightly dangerous to drive on the street. In reality, you need to do something really, really, really dumb to get in trouble in my car on the street.


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2001 Celica GT - gone to the clearing at the end of the path
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"As long as my car goes I drive it. I like racing to the limit, first and last." - Gilles Villeneuve
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cwmizner
post Oct 31 2009, 10:44 AM
Post #16





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QUOTE (renfield90 @ Oct 31 2009, 10:37 AM) *
QUOTE (cwmizner @ Oct 31 2009, 07:32 AM) *
QUOTE (cwmizner @ Oct 21 2009, 06:37 PM) *
how do you think the 255s in FRONT will behave on the street?



comments here?

i think i might wuss out and just get stock sizes, how many tenths are the 255s going to buy me? 1? 2? do i need them to win ST1? hmmmmm, probably! i can agonize over any decision laugh.gif laugh.gif

What do you mean by this? Are you concerned about safety i.e. the car becoming too oversteery for the street?

If the car doesn't come with traction or stability control...I don't think it's seriously a problem unless you're driving at the limit or being stupid. People on Celica forums always complained that the Hotchkis competition bar was too stiff on the rear and slightly dangerous to drive on the street. In reality, you need to do something really, really, really dumb to get in trouble in my car on the street.



i think i'm more concerned about following groves in pavement and being a handful vs. being overseery, agree with all your comments, have traction and stability control, i'm just being a wuss. 255 is wide for the front for most any car as far as OEM goes, but most OEMs probably pick a narrower tire to cover their ass and make the cars lean toward understeer.


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renfield90
post Oct 31 2009, 12:39 PM
Post #17





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QUOTE (cwmizner @ Oct 31 2009, 10:44 AM) *
QUOTE (renfield90 @ Oct 31 2009, 10:37 AM) *
QUOTE (cwmizner @ Oct 31 2009, 07:32 AM) *
QUOTE (cwmizner @ Oct 21 2009, 06:37 PM) *
how do you think the 255s in FRONT will behave on the street?



comments here?

i think i might wuss out and just get stock sizes, how many tenths are the 255s going to buy me? 1? 2? do i need them to win ST1? hmmmmm, probably! i can agonize over any decision laugh.gif laugh.gif

What do you mean by this? Are you concerned about safety i.e. the car becoming too oversteery for the street?

If the car doesn't come with traction or stability control...I don't think it's seriously a problem unless you're driving at the limit or being stupid. People on Celica forums always complained that the Hotchkis competition bar was too stiff on the rear and slightly dangerous to drive on the street. In reality, you need to do something really, really, really dumb to get in trouble in my car on the street.



i think i'm more concerned about following groves in pavement and being a handful vs. being overseery, agree with all your comments, have traction and stability control, i'm just being a wuss. 255 is wide for the front for most any car as far as OEM goes, but most OEMs probably pick a narrower tire to cover their ass and make the cars lean toward understeer.

I agree, I really think you'll be alright. The electronic nannies should take care of almost everything, and for the grooves, just keep a firm grip on the wheel at highway speeds. Works for me. wink.gif


--------------------
Manfred Reysser
2001 Celica GT - gone to the clearing at the end of the path
2013 FR-S

"As long as my car goes I drive it. I like racing to the limit, first and last." - Gilles Villeneuve
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Mike Rogers
post Oct 31 2009, 12:45 PM
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QUOTE (cwmizner @ Oct 31 2009, 09:44 AM) *
QUOTE (renfield90 @ Oct 31 2009, 10:37 AM) *
QUOTE (cwmizner @ Oct 31 2009, 07:32 AM) *
QUOTE (cwmizner @ Oct 21 2009, 06:37 PM) *
how do you think the 255s in FRONT will behave on the street?



comments here?

i think i might wuss out and just get stock sizes, how many tenths are the 255s going to buy me? 1? 2? do i need them to win ST1? hmmmmm, probably! i can agonize over any decision laugh.gif laugh.gif

What do you mean by this? Are you concerned about safety i.e. the car becoming too oversteery for the street?

If the car doesn't come with traction or stability control...I don't think it's seriously a problem unless you're driving at the limit or being stupid. People on Celica forums always complained that the Hotchkis competition bar was too stiff on the rear and slightly dangerous to drive on the street. In reality, you need to do something really, really, really dumb to get in trouble in my car on the street.



i think i'm more concerned about following groves in pavement and being a handful vs. being overseery, agree with all your comments, have traction and stability control, i'm just being a wuss. 255 is wide for the front for most any car as far as OEM goes, but most OEMs probably pick a narrower tire to cover their ass and make the cars lean toward understeer.


Narrower is better ph34r.gif


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cwmizner
post Nov 7 2009, 10:38 PM
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got the 255s all around, it's going to be fine, those run flat tires suck, car drives awesome


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cwmizner
post Jan 23 2010, 12:57 AM
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QUOTE (ULLLOSE @ Oct 21 2009, 10:38 AM) *
Keep that car square, regardless of the wheels width. Pinching the fronts will help buy you a little more tire life on the front, it rounds the edges - if you have not checked there is very little camber to be had in the front. mad.gif

We ran 265-35-18 all around on a 335i with the same size wheels. But you have a great deal less Tq, so I doubt you will want a taller tire.



how'd you do? what class?

obv 335i better DS car than my 330i? faster, but heavier too and wondering if too much power with open diff? mine is laying down power pretty well...

found what looks like great deal in NM

http://www.autotrader.com/fyc/vdp.jsp?ct=u...ar_id=273735441

love my car, but my free maint and warranty is running out soon

somebody go buy that car before i do laugh.gif



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