UK-POLOS.NET - THE VW Polo Forum

I'm fairly sure Sat Navs are pretty accurate with speed calculation.

Everyones failed to mention however that not only do 195/50s kick up a bit of fuss with your speedo, they look like tractor wheels!!

Definately get yourself a set of 195/45s,

If you have any plans at all for lowering (and have a general interest for the apperance of your car) get 195/45s!

Used this tyre calculator I found with google...
http://www.miata.net/garage/tirecalc.html

Hardly any difference between my current wheels (175/65/13's) and what I was thinking of getting (195/50/15's). Says if my speedo says i'm doing 60mph, i'm actually doing 62mph. I can live with that I reckon!

Cheers for all your help people!