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#1. Re: [E36M3] Speedometer Sensor Question - from LoweSeaton@aol.com
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Date: Sun, 4 Jan 2004 18:06:19 EST From: LoweSeaton@aol.com Subject: Re: [E36M3] Speedometer Sensor Question Bruce asks: > My question is, will the location of the sensor allow the > use of different size tires without affecting the speedometer accuracy? Any > information would be appreciated. Thanks in advance. No. Putting different size tires on your BMW will affect the speedometer reading. But this may not be a bad thing. BMW speedometers are notorious for reading high. In other words, say you are going an actual 60 mph, the speedometer will probably read 62 to 70 mph. My speedometer is off by about 3%. If you put 3-4% taller tires on than stock, your speedometer will likely be more accurate. Lowell Seaton '95 M3
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#2. Re: [E36M3] Speedometer Sensor Question - from Jeremy Lucas
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Date: Sun, 4 Jan 2004 18:35:02 -0500 From: "Jeremy Lucas" <jlucas@columbus.rr.com> Subject: Re: [E36M3] Speedometer Sensor Question With 235/45/17 Pilot Sports (instead of 40s), my speedo is dead on at 65 mph (per my Garmin GPS). Jeremy Lucas 95 M3 SSC Civic Si: Kumho Tires - Cobalt Brakes - Comptech ----- Original Message ----- From: <LoweSeaton@aol.com> > Date: Sun, 4 Jan 2004 18:06:19 EST > From: LoweSeaton@aol.com > Subject: Re: [E36M3] Speedometer Sensor Question > But this may not be a bad thing. BMW speedometers are notorious for reading > high. In other words, say you are going an actual 60 mph, the speedometer > will probably read 62 to 70 mph. My speedometer is off by about 3%. If you put > 3-4% taller tires on than stock, your speedometer will likely be more > accurate.
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#3. Best place to buy Mobil One online? - from Wayne Miller
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Date: Sun, 4 Jan 2004 18:43:59 -0500 From: "Wayne Miller" <m3@waynemiller.com> Subject: Best place to buy Mobil One online? Whenever I have people over to work on cars we end up running from auto parts store to auto parts store trying to find something that we need and that something yesterday was Mobil One Synthetic ATF and Mobil One 75w90 gear oil. We did find it but I decided to just order up a case or 2 of each to avoid that problem in the future. Does anyone know of any online stores to purchase these? I looked around and found a few retailers that charge a fortune for it but thought that someone out there may know of a good place. I could also try making a deal with the AutoZone to have them order it for me because we cleaned them out yesterday. -Wayne
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#4. RE: Speedometer Sensor Question - from BOOM,BILL (HP-Roseville,ex1)
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Date: Sun, 4 Jan 2004 18:46:35 -0500 From: "BOOM,BILL (HP-Roseville,ex1)" <bill.boom@hp.com> Subject: RE: Speedometer Sensor Question > From: "R. Bruce Shafer" <mzealot@bellsouth.net> > > For the E36 and most BMW's the speedometer sensor is in the > differential as > opposed to most domestic auto maufacturers that usually have > the sensor in > the transmission. My question is, will the location of the > sensor allow the > use of different size tires without affecting the speedometer > accuracy? Any > information would be appreciated. Thanks in advance. Regardless of where the sensor is located, what any sensor is ultimately doing is measuring how fast the wheel hub is turning. That plus the height/circumference of the tire is how the computer knows your speed. So to answer your question, different size tires will definitely affect your speedometer accuracy. How much of an effect is of course dependent on how much different the tire sizes are. If you know the exact diameter or circumference of the tires in question, some quick math can determine how much your speedo will be off (there are also some online calculators I've seen for this.) As an aside, when getting different tire sizes be aware that if the front and rear sizes are too mismatched, it will trigger your ASC. Found this out when I got a flat in one of my track tires while coming home from the track (had been too lazy to swap before the ride home). Put two street tires on the rear but left the track tires on front... once I got back on the freeway and got above 30 mph the difference between front/rear wheel speeds caused ASC to decide I was in trouble and it cut power constantly - I ended up having to turn off the ASC to make it home. (And btw, the difference in diameter was pretty small: 225/45 MPSCs vs 235/40 S03s). - Bill
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#5. RE: Track Tires part 2 - Size? - from BOOM,BILL (HP-Roseville,ex1)
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Date: Sun, 4 Jan 2004 19:06:32 -0500 From: "BOOM,BILL (HP-Roseville,ex1)" <bill.boom@hp.com> Subject: RE: Track Tires part 2 - Size? > > From: Mo Karamat <karamatm@optonline.net> > > ... > > Now on to tires.. I was speaking with a friend today, and > > he mentioned that Khumo is coming out with a new tire? > > The 710? Does anyone have any info on these? The 710s look interesting (info at tirerack.com), but initial size offerings are useless for E36 M3 applications. > > At this point I am considering going to go with the Khumo Victoracer > > V700's... The Khumo's come in a 225 45 17, 235 40 17 or a 245 45 17. The V700s don't come in 235/40. The Ecstas do, but there have been some problems reported with the Ecstas. Hi Jim B! (And others.) The V700s have worked well for me. > > Does anyone know if the 245 45 17's will rub? I didn't have any rubbing problems. I *did* have problems with the 255/40s. > From: Fernando Mujica <fmujica@mac.com> > > Mo, > > ... 245/45 is too tall. I used the V700 245/45s for a long time before switching to Michelin PSCs. Yes, the 245/45s are too tall in the sense that the larger circumfence and resultant higher gearing will cost you in acceleration, but on a road course what you lose in acceleration is insignificant compared to the better stick of the 245's width (over 225). Speaking of MPSCs, you may want to consider those. More expensive than Kumhos but last MUCH longer, making the dollar-per-track-mile cost less. And the PSCs do not get greasy after a 20 minute session the way the Kumhos always did. The catch: PSCs have no sizes between 225 and 255, so you'll either need to settle for the smaller 225/45 or deal with some rubbing issues with the 255/40s. - Bill
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#6. Control Arm Bushings - from KLchmn@aol.com
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Date: Sun, 4 Jan 2004 19:25:59 EST From: KLchmn@aol.com Subject: Control Arm Bushings Gruppe, I was checking the race car out for the Feb 7-8 club race here in Vegas and found one of the outer ball joints had play. I'm going to replace both arms and the bushings. Which bushings should I use? The car is track only, so I'm considering delrin. Thoughts? The funny thing is that there appears to be a '95 M3 only bushing holder (for lack of a better name for the lollipop thingy). I can't find a part number on mine other than L787 and R788 which doesn't match the L789 and R790 that I'm supposed to have. The bushings have the holes in the center and a small air gap centered above and below the hole for the arm. I was considering the E30 M3 offset bushings to get more caster. Thanks, Kirk Lachman Sin City Chapter '95 M3 #21 I-stock
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#7. Re: Subject: Caliper rebuild kit part numbers needed - from Ron Katona
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Date: Sun, 04 Jan 2004 20:45:26 -0500 From: Ron Katona <rkatona@cox.net> Subject: Re: Subject: Caliper rebuild kit part numbers needed Vern Anderson wrote: > What's the best way to do it without air? I don't have a spare set of rear calipers (yet), so although I carry rear rebuild kits with me, I would have to find a way to do them somehow, at the track for example. Vern, I replaced the stock hose on my air tank with a 20' length with a quick disconnect at the end. Now I can use an air chuck with it, or any air tool. Granted, you don't get much time from an air tank for air tools, but for blowing out a caliper you only need a second. Just carry the correct adapter with you to the track. For us lazy folk, it's also a lot easier to check and top off all four tires when you don't have to drag the tank around the car. -- Ron Katona
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#8.E36 323i Brakes - from Shane Kleinpeter
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Date: Sun, 4 Jan 2004 18:49:39 -0800 (PST) From: Shane Kleinpeter <sak335@yahoo.com> Subject: <Slightly OT> E36 323i Brakes This is slightly OT, but still E36 related so I figured I would throw it out there. My brother has a '98 323iC as a second car ('01 M5 is his main car). He was up here visiting for the last few days but flew back this morning. He called me when he got home from the airport and told me that on the way home he smelled something burning. Turned out that when he arrived he found the front (don't know which) wheel smoking and that he had unusual braking when coasting to a stop. The car was braking without him applying the brakes. I told him I think it's a stuck caliper, but I'm curious if it could be something else. I have heard of ABS sticking and causing something similar, but that was on an E30. I told him to pull the caliper and see if he could push in the piston and then apply the brakes again and then take it for a test drive. He said that when he pulled the wheel that the brake rotor turned freely. No report yet on results... He won't be able to rebuild the caliper if that's what it needs, but he can get a rebuilt one from Autozone or other supplier and have it swapped out by a local indy mechanic and still save himself some money if that's what it is. I'd appreiciate your thoughts. Shane K. __________________________________ Do you Yahoo!? Find out what made the Top Yahoo! Searches of 2003 http://search.yahoo.com/top2003
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#9. Radio serial number w/out pulling radio - from vince@rjthrockmorton.com
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Date: Sun, 4 Jan 2004 22:55:00 -0500 From: "" <vince@rjthrockmorton.com> Subject: Radio serial number w/out pulling radio I recently replaced the wifes battery in her 98 318i and the radio is asking for a code. The same thing happened on my M3 a few years ago and I extracted the serial number by pusing a couple of the buttons on the radio I believe. If anyone knows or remembers the procedure it would be appreciated. THANKS Vince Throckmorton
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#10. Wheel size - from CurtAinSB@aol.com
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Date: Mon, 5 Jan 2004 00:01:38 EST From: CurtAinSB@aol.com Subject: Wheel size I was thinking about how wheel sizes have changed over the years. In the 60's, most cars came with wheels which were about 14" in diameter. Since then, manufacturers seem to be living by the "If big is good, then bigger is better" mantra. Obviously, bigger wheels allow bigger brake systems, which is good. But for a given outside tire diameter, a larger wheel with a lower profile tire will weigh more (more metal, less rubber), and this weight is unsprung, which is bad. Look at Indy or Formula One cars. They have smallish diameter wheels, and tires with a much taller sidewall than is popular in current performance street cars. Of course their brakes don't ride inside the wheel like on street cars, they are inboard. But if they can get fantastically good cornering with taller sidewall tires (implying good lateral stiffness), then why can't this be done on the street? So this raises a question or two. My '95 M3 came with 17" wheels, and newer performance cars are going to 18", 19", or even 20". Are the larger diameter wheels any better? Where will it end? My intuition says that larger is not necessarily better, but I am interested in the group-think on this. Thanks for the bw, Curt Allen