Original Tyre Size

[Essex_Lad]

wots the original tyre size on a MK1 PH1 RT? is this correct?

coz im on the speed calculator and i cant remember..

i got 205/40/17s so wanna know how much the speed is out by





165 / 65 R 13
205/ 40 R 17




http://www.chris-longhurst.com/carbibles/downarrow.gif
http://www.chris-longhurst.com/carbibles/downarrow.gif

Current RR:mm
New RR:mm

Current circumference:mm
New circumference:mm

http://www.chris-longhurst.com/carbibles/downarrow2.gif



http://www.chris-longhurst.com/carbibles/downarrow.gif

Difference in circumference:mm or %

So when your speedo reads 70mph, youre actually travelling at mph

 

[Rich-D]

Yeah, Im 99.9% sure they are 165/65 R13 on my GFs 1.4 RT mate...

The speedo error is huge with the 17s on.

 

[Tom_16v]

Pretty sure your right there

 

[Essex_Lad]

jus gotta be careful through speed cameras!

how easy is it the rectify the speedo?