upgrade tires and rims

first post on tn

i bought a 97 toyota avalon in july of 06 and want to replace stock 15" tires with 18 " tires and rims.

any suggestion as too what i may run into problem wise if any,and some advice from you as well.

We use a 18" wheel with a 215 45 18 tire. All the wheels we have available can be viewed at the link below. Give me a call or send me a PM to discuss the details.

Wheels (http://www.tirerack.com/a.jsp?a=CQ8&url=/wheels/index.jsp)