Tyre Sizes and Tread - Please Help

[Addz]

I have some alloys to go on my car, but ive noticed one of them is a different size.

3 of them are 205/50/15, and one of them is 205/55/15.

Should I get one of 50's replaced for a 55, and stick the 55's on the back and the 50s on the front?

Is this a good idea? It would make the car slightly higher at the back i know, but would it affect the handling? Would it be drivable?

Also, how important is it for the tread pattern on the tyres to match?

Will there be a noticable difference if there odd?

Cheers,

Adam (BigKingy).

[beanie]

You should swap a tyre so you've got 4x50's or 2x55's & 2x50's - i think if you have two of each the 50's should go on the front.

I had 4 tyres all with different tread on my old car - seemed OK but probs would have been a little better with the same on all round