Why are 19's tires size more then 20's
 

Help me please, where can I get some stock tires for my car. The price on the 19s cost so much, I am thinking about getting 20s since the tires will be cheaper. This is probably the worst reason, but it seems to make sense for now. Your input is appreciated!

Ive heard from an ex-tire company employee... b/c 19" tires are rare and not in demand there for it costs more to make a limited production tire....rather than a tire that is in demand and is mass produced.

20" tires are no cheaper than 19" tires in most of the sizes that we need. Almost every set I have looked at run a little bit higher for 20's rather than 19's, so make sure the price is significantly different, and be sure to run a strong 20" wheel or you'll beend them quickly

i stand corrected redlude^^ is right... just checked out Tirerack i guess that guy was wrong.. :o maybe thats why he's a Ex-employee :p