-------------------- 1 --------------------
#1. Re: 95 M3 - benefits/drawbacks of staggered wheel - from shane.a.kleinpeter@accenture.com
Top
Date: Fri, 6 Jul 2001 15:30:25 -0400 From: shane.a.kleinpeter@accenture.com Subject: Re: 95 M3 - benefits/drawbacks of staggered wheel >Using wider tires in back will decrease oversteer because they will >develop more friction, and hence, tend to keep the rear from swinging around >as occurs with oversteer. So, instead of decreasing grip in back as you say, >I believe it is the increase in rear grip which will tend to keep the rear >more firmly planted. Please advise if you think this is wrong... OK, I don't mean to nit-pick here but this is something that bugged the crap out of my college physics professor, and now of course, it bothers me as well. Using varying width tires has no effect whatsoever on how much friction is generated. The coefficient of friction is constant for a given set of conditions (once an object is in motion, since there is both static and dynamic coefficients for a given material or surface). The road has the same amount of friction, it's just that by varying tire width, you have more surface area in contact with it. This enables the car to distribute weight over a larger area, thus improving grip (we won't even get into anything more complex than this simple explanation since it's Friday). The rest of what is said above is spot on. Shane Kleinpeter Tarheel Chapter '96 M3
-------------------- 2 --------------------
#2. RE: [E36M3] Great HID price - from Chester Wong
Top
Date: Fri, 6 Jul 2001 12:36:12 -0700 (PDT) From: Chester Wong <chester_p_wong@yahoo.com> Subject: RE: [E36M3] Great HID price --- Bob Lenarcik <lenarcik@pacbell.net> wrote: > Does anyone know how long the special prices are good for? I believe this place's price is their price. Not even group purchase or anything like that. I already have one on order to take a look. Chester ===== __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
-------------------- 3 --------------------
#3. Re: [E36M3] Re: 95 M3 - benefits/drawbacks of staggered wheel - from LoweSeaton@aol.com
Top
Date: Fri, 6 Jul 2001 16:24:31 EDT From: LoweSeaton@aol.com Subject: Re: [E36M3] Re: 95 M3 - benefits/drawbacks of staggered wheel Shane writes: > it's just that by varying tire width, you have > more surface area in contact with it. This enables the car to distribute > weight over a larger area, thus improving grip (we won't even get into > anything more complex than this simple explanation since it's Friday). I'll argue that wider tires do NOT have a larger surface area touching the ground if the tire pressure is the same. What does change is the shape of the contact patch. Skinny tires have long narrow patches, wide tires have short broad patches. When corning, the wider tire has the better shape. You have more traction normal to the direction of your car. Hence, wider tires allow you to corner faster. Now the physics really gets funky when you use a wider rim with the SAME size tire - as in the '95 forged wheel option/LTW. I'll argue the contact patch doesn't change with the wider rim, after all it is the same tire. But what changes with the wider rim is how the tread is braced by the sidewall. The wider rim stabilizes the tread better and increases cornering traction. The increase is minute like others have said. I doubt you could tell much difference on the street whether you have 8.5 or 7.5 inch rims on back. Comments? Lowell Seaton '95 M3 Dallas, Texas
-------------------- 4 --------------------
#4. Contact patch -tire width, air pressure, etc - was staggered wheels - from Matt Henson
Top
Date: Fri, 6 Jul 2001 14:07:02 -0700 (PDT) From: Matt Henson <hensonator@yahoo.com> Subject: Contact patch -tire width, air pressure, etc - was staggered wheels Lowe, For a given air pressure it is true that the tire patch will have a fixed area regardless of tire width. I heard from a local racer that a wider width tire has less of a problem with rolling over so it can use less air pressure, increasing the contact patch. This kinda makes sense since a wide tire has more rubber normal to the direction of force there is a smaller percentage of width reduction for any given amount of sidewall flex. I hope that this makes sense. Anyway, it does make sense that you'd want to do anything possible to reduce the air pressure and increase the contact patch size. This should be one benefit of going to a bigger rim/lower profile tire - the shorter sidewall flexes less so it doesn't have to use as much air to remain rigid. Interesting stuff.. -Matt --- LoweSeaton@aol.com wrote: > Date: Fri, 6 Jul 2001 16:24:31 EDT > From: LoweSeaton@aol.com > Subject: Re: [E36M3] Re: 95 M3 - benefits/drawbacks > of staggered wheel > I'll argue that wider tires do NOT have a larger > surface area touching the > ground if the tire pressure is the same. What does > change is the shape of > the contact patch. Skinny tires have long narrow > patches, wide tires have > short broad patches. When corning, the wider tire > has the better shape. You > have more traction normal to the direction of your > car. Hence, wider tires > allow you to corner faster. > <snip> __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
-------------------- 5 --------------------
#5. 95 M3 - Lightweight or Not??? - from nabli@attglobal.net
Top
Date: Fri, 06 Jul 2001 18:37:31 -0400 From: nabli@attglobal.net Subject: 95 M3 - Lightweight or Not??? This is very odd to me and if I never checked the Vin# I would never have even known. Go to: http://www.m3ltw.com/gallery.htm This is Eric Ayala's LTW: http://www.m3ltw.com/EricAyala.htm The VIN on this car is WBSBF9324SEH04065 and when you run EH04065 you get a production date of 01/95. Does anyone see where this is going???? The M3 LTW was only manufactured from 08/95-10/95. I guess it's time to check the passenger side strut tower for the Individual sticker. :-) Caveat Emptor! Cheers, Jim E.
-------------------- 6 --------------------
#6. Re: [E36M3] Great HID price - from Joe Tan
Top
Date: Fri, 6 Jul 2001 15:41:32 -0700 (PDT) From: Joe Tan <mailjtan@yahoo.com> Subject: Re: [E36M3] Great HID price That is interesting, I wonder what kind of setup do they use. I know Porsche bi-xenon only have one bulb and have to use a mirror to redirect the beam to high beam. Joe. --------- fwiw, BMW is offering bi-xenon lighting on most vehicles (including 3-series) for MY2002. i'm sure the xenon high beams are a different technology, which don't require the standard "charging" cycle of the current aftermarket setups. ben liaw __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/
-------------------- 7 --------------------
#7. Re: [E36M3] Rubber Flexibility - from LoweSeaton@aol.com
Top
Date: Fri, 6 Jul 2001 19:02:59 EDT From: LoweSeaton@aol.com Subject: Re: [E36M3] Rubber Flexibility Jonathan, I can't imagine any problem mounting a 235/40 tire on a 7.5" rim after being mounted on an 8.5" rim. However, I do discourage moving a tire from the left side to the right side. I always rotate front --> back & back --> front. I know every car maker recommends rotating tires in an X. I won't do it. 30 years ago radial tires had problems with the belts separating if you flipped them left to right. Supposedly modern radial tires won't separate if flipped. I'm skeptical. I do know if the tires are very well worn, almost bald, the belts will separate quickly. BTDT several times. So if you do dismount the tires, I'd recommend just moving them front to back but keep them on the same side. How worn are the tires? How much longer will they last? If you want to save some money, you could just rotate the rear wheels to the front - rims and all. Yeah, you will have the 8.5" rims on the front and the 7.5" rims on the rear. Your M3 won't implode :-) Personally, I don't think the little bit wider rims make a hill of beans difference - certainly not at safe street driven speeds. I've actually put new 245/40 MXX3 tires on 8.5" rims on the front and nearly worn out 235/40 MXX3 tires on 7.5" rims on the back at a driving school. [I was using up the old 235/40 tires and had to put on the 245/40 tires by Sunday.] I couldn't tell any difference. My M handled about the same although my suspension was stock at the time. Anyway, if your driving is almost exclusively highway miles, you could rotate front to back for a while to even the wear. Nobody will notice. Lowell Seaton '95 M3 Dallas, Texas
-------------------- 8 --------------------
#8. Re: [E36M3] How can this E36 part possibly be NLA ?!?!?! - resolved - from Andrew E. Kalman
Top
Date: Fri, 06 Jul 2001 16:20:40 -0700 From: "Andrew E. Kalman" <aek@pumpkininc.com> Subject: Re: [E36M3] How can this E36 part possibly be NLA ?!?!?! - resolved Thanks to all that replied -- it turns out that the P/N has been superceded. At 11:16 -0500 07/06/2001, nabli@attglobal.net wrote: >They can't be that lazy! I guess my dealer can be ... :-( Thanks Again! -- ______________________________________ Andrew E. Kalman, Ph.D. aek@pumpkininc.com
-------------------- 9 --------------------
#9. Conforti software and intakes - from Joe Kannookadan
Top
Date: Fri, 6 Jul 2001 18:52:59 -0500 From: "Joe Kannookadan" <joe.kannookadan@sourcelight.com> Subject: Conforti software and intakes From what I understand and what Suzy has told me (thanks), the Shark Injector and the chip differ in that the Injector flashes the code into the DME while the chip actually is physically put into the DME to introduce the new code. A couple questions: do they both provide the same benefits in the end, ie, do they contain the same code? I suppose the Injector is nice in that you can revert to stock if the need arises. And do later versions (both chip and Injector) differ from older versions? Thanks. --- joe
-------------------- 10 --------------------
#10. RE: [E36M3] Conforti software and intakes - from Jim Bassett
Top
Date: Fri, 6 Jul 2001 17:01:09 -0700 From: Jim Bassett <jbassett@geysernetworks.com> Subject: RE: [E36M3] Conforti software and intakes > From what I understand and what Suzy has told me (thanks), the Shark > Injector and the chip differ in that the Injector flashes the > code into the > DME while the chip actually is physically put into the DME to > introduce the > new code. And there's more to it: the chip is used for '95 M3s, whereas the Injector is for '96+ M3s. > A couple questions: do they both provide the same benefits in > the end, ie, > do they contain the same code? No, I believe the code is different, since you're talking about 2 different models of M3. '95: 3.0l and OBD-I '96+: 3.2l and OBD-II > I suppose the Injector is > nice in that you > can revert to stock if the need arises. You can also do that with the chip - just put the stock chip back in. It's a bit more involved, since you have to remove the DME, but it's still possible. > And do later > versions (both chip > and Injector) differ from older versions? That I'm not sure about. Best person to ask is Josh at Eurosport: http://www.eurosporthighperformance.com/ Hope that helps, Jim Bassett 1998 M3/4 - JimC chip & intake