Which size of tyres 215 or 205

[Gav76]

Currently I have 205/40 R17s on my Clio. Someone said I should really have 215s on instead but why? What difference does it make and should I change them?

Thanx

 

[telford_mike]

Dont do it. 205s are fine, you could possibly go a bit narrower (195), but dont go any bigger.

 

[Tom_16v]

Stick to the 205s. Generally you should stick as close as possible to the original tyre width.