 speed check, mph @ 3000 rpm |
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| rhodyguy |
 Jul 11 2003, 02:09 PM
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#1
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Chimp Sanctuary NW. Check it out.  Group: Members Posts: 22,107 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch  |
the car wants to go fast. the wife told me to slow down 3 times today. i looked down and was doing 80 and didn't have a clue. the tire size is 195/60 15. what are you doing at 3000 rpm on the freeway? i'm going out for a few of my favorite onramps this afternoon.
kevin "done and running" |
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| mskala |
Jul 11 2003, 02:20 PM
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#2
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R Group: Members Posts: 1,925 Joined: 2-January 03 From: Massachusetts Member No.: 79 Region Association: None 
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Dug out the old spreadsheet.
With the 205/55 bridgestone street tires on the -6, I'm doing 64.0 at 3000rpm. If it was a -4 fifth gear, it would be 68.4mph. If I use the calculated diameter for 195/60/15 using a -4 fifth gear, I get 69.8mph for you. |
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| rhodyguy |
Jul 11 2003, 02:24 PM
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#3
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,107 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
thanks loads!!!
kevin |
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| DNHunt |
Jul 11 2003, 02:24 PM
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#4
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914 Wizard? No way. I got too much to learn. Group: Members Posts: 4,099 Joined: 21-April 03 From: Gig Harbor, WA Member No.: 598 |
Kevin
2900 in 5th is reads 70 mph for me. But I believe it is about 60 since everyone is passing me. I run the same tire size as you. I usually drive just below 3000 and have only been pulled over once since 1982. Don't believe the speedo or the wife (no offense Jean but in the 914 you're sitting a little low). I just try to keep up with traffic and that's getting harder to do. Man I sound like an old fart. By the way, the only way to keep up with Geoff is to keep him behind you. Find a narrow road and drive wide or smoke him out like I do. LOL. Dave |
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| rhodyguy |
Jul 11 2003, 02:35 PM
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#5
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,107 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
dave, are you at work, home, in town or what? i'm hot to drive.
kevin |
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| DNHunt |
Jul 11 2003, 02:56 PM
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#6
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914 Wizard? No way. I got too much to learn. Group: Members Posts: 4,099 Joined: 21-April 03 From: Gig Harbor, WA Member No.: 598 |
Kevin I'm at work then going to the Mariners with the wife so I'm on the shelf today. Lets try something this weekend. Imagine people seeing two funny little silver cars. "I wonder what those things are"
Dave |
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| tryan |
Jul 11 2003, 03:05 PM
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#7
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Senior Member Group: Members Posts: 553 Joined: 22-January 03 From: smokey mountains gatlinburg tn Member No.: 184 |
must be fiats. (IMG:style_emoticons/default/driving.gif)
explain to your wife that our speedometers are optimisticly inclined. hold a steady sixty and use the mile markers for 10 miles or do to see what % you are 'off'. lest she look at the tach. (IMG:style_emoticons/default/aktion035.gif) |
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| Neal |
Jul 11 2003, 08:32 PM
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#8
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Member Group: Members Posts: 300 Joined: 23-April 03 From: Sammamish, Washington Member No.: 605 |
195/60 R15, I drive with the speedo just under 90, it just seems right
I think at 3000 mine says about 75. Go figure (IMG:style_emoticons/default/MDB2.gif) |
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| ChrisReale |
Jul 11 2003, 08:38 PM
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#9
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Sleazy Group: Members Posts: 2,665 Joined: 20-January 03 From: San Francisco Member No.: 176 |
Come up to Seattle, and bring a spare throttle cable (IMG:style_emoticons/default/beer.gif)
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| Red-Beard |
Jul 12 2003, 08:11 AM
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#10
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"Ya canna change the laws of Physics" Group: Benefactors Posts: 1,124 Joined: 11-February 03 From: Houston, TX Member No.: 288 Region Association: None  |
http://www.sdspeedo.com/frames/sdspeedoerrorpg001.html
Stock tire size is 165 80 15 Input your tire size and your speedometer reading James |
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| anthony |
Jul 12 2003, 11:05 AM
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#11
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2270 club Group: Benefactors Posts: 3,107 Joined: 1-February 03 From: SF Bay Area, CA Member No.: 218 |
I'm running 195-60-15s too and my speedo is way off. I think it reads at least 10 to 12 mph fast even though the calculations say it should be 5 mph fast.
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| maf914 |
Jul 12 2003, 12:10 PM
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#12
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Not a Guru! Group: Members Posts: 3,049 Joined: 30-April 03 From: Central Florida Member No.: 632 Region Association: None
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My 205/60 x 15 size is not off too bad. About 2 mph at 70. I can live with that.
Now I wonder how accurate the speedometer and tachometer are? Mike |
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| redshift |
Jul 12 2003, 05:32 PM
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#13
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Bless the Hell out of you! Group: Members Posts: 10,926 Joined: 29-June 03 Member No.: 869 |
Hey Mike, my Tach is 200 low @ redline, my speedometer is dead on! 1st time for everything!
I was a lil scared when I discovered the tach drift.. I had already been above that line. (IMG:style_emoticons/default/ohmy.gif) Stock tires (32lbs) at true 3000 I am at 73mph and a teenie.. M |
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