Speed

[Cuprajohn]

i used to be a vauxhall boy and it was well known the vauxhall speedos over read just wondering does anyone know how reliable seat speedos are. Also what kind of top end people getting out of their cupras?

 

[__B3NNY__]

I thought that most speedo read about 3mph over or somthing along those lines. As for top speed ive only ever had my car flat out once on a private stright and just topped 140mph on a K03, Just reading your sig it says 240ponies which is fair enough but doesnt mention a FMIC?

David.

 

[Cuprajohn]

my other cars a corsa gsi the speedo reads about 15mph out at top end. the beza is in dire need for a front mount, just saving the cash for the forge one.

 

[jNx]

10% I've found whilst having a play with TomTom

77mph on the speedo is 70mph GPS

 

[Cuprajohn]

gps speed isnt very acurate usually

 

[m0rk]

it is.... it's the average of the last 1second

 

[nogutsnoglory]

77mph = 70mph?

 

[__B3NNY__]

10%

Ahh thats right somebody explained it to me while using 30mph as an example thats where i got the 3mph from.


David.

 

[nogutsnoglory]

so is that with 16's or 17's?

 

[jNx]

Thats on 195/45/15's (Standard Cupra fitment)

You'll find most manufacturer's speedo's aren't 100% accurate, don't know if it's a trade thing or what to help you against speed cameras or something? Would be logical

 

[PhilW]

155 top end via gps.

Not done by me tho.

 

[Cuprajohn]

ye pulled 150 out off mine 2day. on a private road or track though

 

[nogutsnoglory]

Thats on 195/45/15's (Standard Cupra fitment)

You'll find most manufacturer's speedo's aren't 100% accurate, don't know if it's a trade thing or what to help you against speed cameras or something? Would be logical

Standard wheels are 16' though, wouldnt that make it slightly higher than 10%, and even more on 17's?

 

[carlisle pete]

i found mine to be out about 4-5 mph on speedo to GPS and ever so slightly more at over 120 ish.. i dont no wat it does as goes off the clock but dont think for a second i will be doing 165-170 as the clock reads!!! on a runway of course this was!

 

[jNx]

Standard wheels are 16' though, wouldnt that make it slightly higher than 10%, and even more on 17's?

Thats a typo mate sorry.. 195/45/16

I did the same thing when ordering tyres the other week, bloke wasn't impressed when he came to fit them