Tyres, how will size change affect me ?

[WorldUK]

Hello,

Ive currently got 225 50 R17 on my A4 avant.
Im looking for new tyres and see that 225 45 R17 are cheaper (branded) than 225 50 R17 , would it affect much if i go for the 225 45 R17 instead of 225 50 R17 ? Yes i know it will affect little the speedometer about 3%, but will there be any other reasons why should or shouldnt go smaller?

Thanks!

[Guest 2]

Insurance as you're not using the correct size for the vehicle set out by the manufacturer.

[WorldUK]

According to the sticker on door says can use 225/50/R17 & 245/45/R17 & 225/55/R16 & many more different once from R16 to R18.


What i dont get is, why the Goodyears are 225 / 45 / R17 £66/£68 each and 225 / 50 / R17 are £86/88 each.

[zollaf]

because they make far more of one size than they do another. same reason i run my 80 on 195 65 15 rather than 205 60 15.. save about 20 quid a corner and also have a far greater choice of tyre i can fit.

[WorldUK]

What brand tyres anyone uses? Been looking at Goodyear ones but just seen some Avon ZV7-s that offer same A grip in wet and C rolling resistance.