| From | Message |
Detlman
Dodge Dakota
7/04/2001
00:09:19
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 Subject: Speedometer Calibration
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Message:
How simple is it to have the computer recalibrated to change the tire size, so the speedo will be correct?
Is it as simple as going to a compitent dealer and having the plug up and tell the computer the new tire size ?
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Dan Gruber
Gen III
7/04/2001
07:15:08
| RE: Speedometer Calibration
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Message:
I'm speaking on the experience of a friend here.
When my friend put 31" tires on his '99 Durango, the dealer was able to quickly reprogram his computer. However, the dealer told him that they could only reprogram to factory available configurations, i.e. gear swaps to different stock ratios, tire swaps to other stock sizes. They said that if he went with anything other than what was originally offered by Dodge they could get him close, but not completely correct.
Dan
2000 CC SLT 4.7 4X4 Auto 3.55 LSD
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Detlman
Dodge Dakota
7/04/2001
10:04:02
| RE: Speedometer Calibration
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Message:
thank you that is what I wanted to hear. I put 255/55/17's the same as the R/T. when I checked tire sizes the also offer a 255/60/16 on my truck and it is the same size ( diameter as the r/t tire.
thanks again !
Now if I can find a compitent dealer to do it fo me.
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jimmeyjack
Dodge Dakota
7/04/2001
20:17:41
| RE: Speedometer Calibration
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Message:
when my dealer did my speedo he said not all computers will take the new recalibration if the truck didnt come with that tire size already,and you still pay regardless. mine took but he has seen some that did not.
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adam
Dodge Dakota
7/05/2001
12:23:56
| RE: Speedometer Calibration
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Message:
take the new calibration? sounds odd to me. its not like a heart transplant, their just swaping in a new constant.
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Blizzard
Gen III
7/05/2001
12:53:39
| RE: Speedometer Calibration
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Message:
Check Superlift's website ... www.superlift.com ... and look under the "new products" section. They've got a gadget to compensate for larger tires. Don't remember exactly what they call it.
'01 QC 4x4
5.9L, 3.92 LSD, loaded
www.geocities.com/blizzzzard69
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4X4Tony
Dodge Dakota
7/06/2001
08:38:43
| RE: Speedometer Calibration
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Message:
I installed a TruSpeed from Superlift two weeks ago on my '99 CC 5.2 FT4X4. Goes in very easy and isn't too hard to calibrate (their instructions were way off - or I really screwed up the initial setting). I borrowed a friend's GPS to set the speed correctly. With my 33 BFGs I was really going 71 when the speedo read 60 (no wonder everyone else was driving so damn "slow"). Picked up 1.5 MPG on the overhead console - rolling along at 15.1 now.
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Mar
Dodge Dakota
7/06/2001
09:13:37
| RE: Speedometer Calibration
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Message:
I know in KM that if you go with 32x11.5-15 that you are going 6.5 km faster then the speedo says you are going. That is if you had 31x10.5-15 before.
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Blizzard
Gen III
7/06/2001
09:14:08
| RE: Speedometer Calibration
IP: Logged
Message:
Cool Tony! I was wondering if anyone had actually bought one of those yet. Where'd you get it? How much did it cost ya? I'm sure I'll be needing one when someone finally develops a lift for my rig.
Thanks
'01 QC 4x4
5.9L, 3.92 LSD, loaded
www.geocities.com/blizzzzard69
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4X4Tony
Dodge Dakota
7/06/2001
10:44:15
| RE: Speedometer Calibration
IP: Logged
Message:
I got mine from http://www.rockymountainsusp.com and it ran $175 with Next Day Air shipping (I, of course, HAD to have it for the weekend - and I ordered it on a Thursday).
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