wheel sizes and wheel options ?

[pottinger]

hey guys, little confused on a tyre/wheel question.

Ed35 with 19 inch Glendales and 225/35/19s
standard GTI 18 inch monzas - 225/40/18s (I presume the 18 inch glenwatkins on ed35 are same tyre size)

are the glendales exactly the same rolling diameter for speedo etc etc etc
I am presuming they are and must be the same fittment etc etc surely... ?

So basically (if I wanted) I could stick anyone of the above options on without effect on speedo or even offset ??

sorry for maybe a silly question but im going round in circles trying to answer this for myself lol

cheers
potts

[JayGTD]

Try these calculators

http://tire-size-conversion.com/speedometer-calibration/

I've put the sizes in, for your speedo showing 70mph, it'll actually be 69.68. So not far out

J

[Mattyj]

Going round in circles oh dear  lol