I have a Discovery 2000...i want to get 20" rims....does it need any mods?.... & what tire size should I get...

 

Why do you want to put 20" wheels on a Disco???
They ride like crap, cost way too much and wear out long before they should.

 

I see many posts offering to give up there 18 factory hurricane wheels and wanting to buy the 16 factory wheels. Why?

 

16" tires offer a smoother ride. The rule of thumb is the taller the sidewall, the smoother it rides. Also, your tire selection widens tremendously in the 16" range in comparison to the 18". They are cheaper, usualy can be expected to last longer, and last but not least, if you off road your Disco, 16" is by far a much better tire for the job.

Low profile tires look cute. On the other hand, they cost much more, wear out much faster, make the rovers ride rough, and are totally useless off road. Hmmmm....