Speedo Accuracy
#1
Rennlist Member
Thread Starter
Speedo Accuracy
Which is more accurate ... the speedo, or info from a data logger which uses GPS (G2xtreme)? Was at the track last weekend and glanced "quickly" down at the speedo at the end of the straight once. It read 154MPH. Looked at my data logger info, it didn't have a number over 147MPH (not sure which lap I checked the speedo on).
#3
Super Moderator
Needs More Cowbell
Lifetime Rennlist
Member
Needs More Cowbell
Lifetime Rennlist
Member
Maybe a class action lawsuit, following the Honda/Acura one, would get everyone extended warranty periods for the inaccuracy:
http://www.engadget.com/2007/02/19/h...ed-odometers/2
http://www.engadget.com/2007/02/19/h...ed-odometers/2
#4
Three Wheelin'
GPS is more accurate. This is a common issue with at least BMW and Porsches that the speedo is overly optimistic -- I have seen the same 4mph difference.
#5
Rennlist Member
Join Date: Oct 2004
Location: West Palm Beach, FL
Posts: 204
Likes: 0
Received 0 Likes
on
0 Posts
I was testing my G2x the other day and found that my speedo was reading about 2.5 to 3 Mph higher than the GPS in the GT3 and the Cayenne speedo was reading about .5 Mph higher.