YES...you can definitely put 20's all the way around and even lower the car if you want to...here's proof:

http://www.cardomain.com/event/2006/...B?c=0&p=3&i=86

http://www.cardomain.com/event/2006/...B?c=0&p=3&i=87

... 20 x 8.5 front and 20 x 9.5 rear!