Hi all.

I have a 2wd saph cossie, lowered a little on Konis. Just bought a set of alloys and need 2 new tyres. Question is what size? Wheels are 7 x 17. They currently have 215/40 17 on them. When I enquired about replacement this morning the guy said 205/45 17 were the equivalent size as he didn't have 215/40's in stock. I thought the profile went up and down with the diameter, not the width?

Short version, what size tyres should I be using?

cheeRS