Will they tuck???

I am getting ready to buy some wheels for my 03 jetta. I am looking at some 20x8.5 dubs...the only problem is I do not know if they will tuck. The car is juiced so it is going to get real low, and I don't want to run into clearence problems...Any ideas???

Little more info might help. What offset are they. What size and offset were the factory wheels. Did the factory wheels tuck.