Re calibrating speedos ?

Re calibrating speedos ?

Author
Discussion

interloper

Original Poster:

2,747 posts

270 months

Monday 15th March 2004
quotequote all
Recently I've fited lower profile tyres on my standard rims. My 944 used to run 15" wheels and 205/60R15 tyres, it now has the same wheels but my Eagle F1's are only 205/50R15. I knew that this would make the speedo over read a bit, apparently this works out that if my speedo was dead accurate on the original tyres it would be about 5 mph out at 70 mph.

Problem is how often does anyone do 70 ? on the M-way I'm normaly sat around the 85-95. What feels more like 90 registers on the speedo at around 105. Which means its now far harder to judge wether you are in licence losing territory or doing a meer points "n" kick up the arse sort of speed.

In short anyone know if its possible to cheeply and easily adjust the calibration ?

355f

516 posts

263 months

Monday 15th March 2004
quotequote all
hi!

there is a company calles speedy cables

www.speedycables.co.uk

They are based in london but have a large factory in wales that make speedos for many of the brands.

They also do a recalibration service thats very good

interloper

Original Poster:

2,747 posts

270 months

Monday 15th March 2004
quotequote all
Ta muchley ! Will get in contact with them.

Dontlift

9,396 posts

273 months

Monday 15th March 2004
quotequote all
Just buy a Road Angel and use the GPD Speedo on that, much more accurate than anything connected to your wheels