Highlander
14th November 2008, 19:33
Evening all,
It might sound like a silly question but how much difference would tyre profile make to speedo indication? (speedo is driven off the front wheel)
We just got Mrs Highlander a late 80's GSX600F and the speedo is a bit generous. Indicating 120 Km/h when I'm follwing at 105, and my GPS indicates 100. Also following her around the road my trip meter and GPS are pretty close but her trip meter is about 10Km high over a 200 Km ride.
The "book" lists the front tyre as 120/80/17 (I think) but the tyre on it is 120/70/17
Could this account for the error?
It might sound like a silly question but how much difference would tyre profile make to speedo indication? (speedo is driven off the front wheel)
We just got Mrs Highlander a late 80's GSX600F and the speedo is a bit generous. Indicating 120 Km/h when I'm follwing at 105, and my GPS indicates 100. Also following her around the road my trip meter and GPS are pretty close but her trip meter is about 10Km high over a 200 Km ride.
The "book" lists the front tyre as 120/80/17 (I think) but the tyre on it is 120/70/17
Could this account for the error?