Thread: How accurate is your speedo??"

Same with my Disco above 60 kph (as measured by the GPS)...the Commodore is spot on.

Surprisingly inspite of the speedo reading the odometer is accurate .

what size tyres are you running.....?

apparently the defenders should be running 255 85 R16 to read correctly.....

Originally Posted by sumo

Checked the defenders speedo today up on the freeway, against the missus suby, its 7km hr fast!!, So the landy is sweet as a nut crusing at 93kms hr, chit eh!!. "Ah well still get there some time".


Sumo.

That's interesting - my County is 7-8% fast, checked at a variety of speeds and using a variety of methods - on standard 7.50x16 tyres. Difference due to tyre wear is pretty small, maybe 1% or a little more. It has not varied over the last fourteen years, and the odometer is out by the same amount.

The legal requirement is, from memory, +10%, -0%, so they seem to have gone for safetyabout in the middle of this range.
John

Lara is (at 100 indicated) doing a respectable 116km/h.

But then, tyre size is a factor!!!!

Have a Truspeed or 3 sitting here that will fix the issue.

Tombraider

Originally Posted by DEFENDERZOOK

what size tyres are you running.....?

apparently the defenders should be running 255 85 R16 to read correctly.....

Standard tyres, 750x 16 dunlop road grippers, ( telecom tyres) the best ones out there!!. Ha ha ha.

Originally Posted by sumo

Standard tyres, 750x 16 dunlop road grippers, ( telecom tyres) the best ones out there!!. Ha ha ha.

telecom tyres.....no wonder its slow......

103 on the speedo gives me 100kph on the gps, with 265, 75 R16s, error is less than it was with the original grabbers.

Originally Posted by DEFENDERZOOK

telecom tyres.....no wonder its slow......

Just keeping every thing standard, things don't fall to bits as quck!, Just for interest sake whats the next size up from telecom on standard rims?.