I have an 03' accord
I have a chance to purchase a set of 20's and 19's but
before I buy them I want to know what off set I need to get to have the perfect fit. These rims have a 38mm off set and the front tires are 235/35/19 and the rears are 255/35/20. Will these fit???
What is the best route to take? Keep in mind that I would like to lower it a tiny bit too.
I need all the info I can get.
Let me know

 

I bet 38 sticks out like mad. Anyway, those are just not for your car. They are for a RWD car with the wider tires out back and larger wheel. 235 is probably really pushing it. 255 would never fit without modification.

Get some 19" wheels that are the same width and get four identical tires to go with them. You'll probably want to go with something like 45-48 offset wheels and nothing wider than 225 tire. 235 may work, but will probably be close.

 

The higher # on the off-set further in the wheel goes????

 

Affirmative. A 35 will stick out more than a 45, etc.

 

Is 15 and 30 a big difference

 

A +15 offset will never work on an Accord, either will +30.

If you want big wheels, I'd say you should get some 19's with a width no greater than 8" and tires no wider than 235, and an offset somewhere between 40-50.

Personally I have 18x7.5 in a 45 offset with 225 wide tires, and the wheels and tires fit inside the wheel wells decently, no rubbing.