speed per 1000RPM for 147 2.0TS Selespeed - Page 2 - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Thread Tools Search this Thread
(Post Link) post #26 of 26 Old 14-03-04 Thread Starter
Status: -
AO Member
colins's Avatar
Join Date: Feb 2004
Posts: 169
Re: speed per 1000RPM for 147 2.0TS Selespeed

Originally Posted by Simon_S
I assure you that this is what happens!
The ABS speed sensors are calibrated in true km/h and this is what gets sent to the speedo. Speedos must by law never read lower than the true speed so I guess 10% is added to ensure this.
I did a comparison with a Garmin and the speedo shows 5km/h faster than the GPS reading.

Speedo vs. GPS (plus/minus 0.2km/h)
70 - 65
80 - 75
90 - 85
100 - 95
110 - 105
120 - 115
130 - 125
140 - 135

Seems to me that there is a 5km/h difference regardless of speed, not sure if it will still be 5km/h all the way to the top speed since I don't have a chance to go beyond 140 this morning, but will post result later.
colins is offline  
Sponsored Links

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 147, 156 & GT

1000rpm , 147 , 20ts , selespeed , speed

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome