Tyre size help.

[Chris1712]

Hi all, time has come for some new tyres on the rear of my astra.
Currently they are 195/60/15, and looking for tyres now there are very little offerings worth having in this size. I wont be going with Eagle F1's this time round (funds wont allow) so i was considering either a set of Toyo Proxes (T1-R or T1-S??) or mayb Avon ZZ3's?

I can only get any of the following tyres in a 195/55/15 size, which would affect the speedo by about -3.2%, will it adversely affect anything else dramatically?

Cheers guys, any comments welcome.

 

[Jonjam]

If your astra has abs it can throw that a little as the ecu cannot understand the figures , also you might find it has picked up a little more understeer as the rake will drop and might not feel quite as good on the brakes as it will not transfer weight forward as easy , as the speedo is driven from the front wheels the the speedo will be accurate until you swap to the same size all round