Hi, I am a newbie

to this whole mini thing,so please forgive me for asking dumb questions....anyway,I just got my 2006 mini cooper base coupe...the stock 15's have to go, I would like to go with bigger wheels,which one would be cheaper to buy tires for 17's or 18's...I hear rumors that 18's will be cheaper in the long run because tires for even numbers(16's,18's) are way cheaper than odd numbers(17')...I would like the 18's but if the above story is false I would not mind setling for 17's.....the stockers must go ASAP so any input would be greatly appreciated.....

what are some good places to buy wheels from? I would like to get some all black wheels,i want a stealth look,plus the dog gone brake pads gives off way too much dust for the gray finish and hell no NO CHROME!!!!!!![:@]