[quicksilverdon]

Originally Posted by tase

Thanks,OK wrong as in too fast or too slow?



Thank,im not looking to increase the rims just keeping the originl OEMs 16" polished chromes but change tyre profile size to as small as possible...i wont be driving on dirt roads or very bumpy roads...

Are there any links to this kind of infos!

Many thanks

Welcome to the world of PTs!
here's one link about speedometer:
Tire size calculator

and a good overall article about tire choosing:
Tire Basics - Reading Sidewalls - Car Care - Motor Trend

Some basics -
wider footprint - the first, larger # - is better for handling, but worse in rain or snow.
The lower the second number, aspect ratio - means less sidewall, harsher ride more danger to the rims, but better (firmer) handling.

Then, there's different tire compounds - grip at expense of wear, etc.
I got Michelin Hydroedge tires as replacements on my 16" wheels and love them. Much better handling in the dry, and extremely better in rain/snow and they have already outlasted the original "good-for-a-Years" and show little wear.
Hope that helps.