Will 17 x7 with 40mm offset work with H&R sport springs? Will it look wierd?

 

it will rub. Get something with a 48 offset and you be ok.

 

i think those offsets are for lexus..

 

that will fit.

its a 7" wide rim.

my rims on my CL are 18 x 7 with a 42 offset, and 1.5 inches dropped.

the setup you are getting will extend outwards the EXACT same as a rim that is 7.5 inches wide with a 46 offset(odd offset)

I have seen people on this board with a lower offset than 46...i've seen 45 offsets on a 7.5 inch rim, and i've even seen a 42 offset with a 7.5 inch rim....but with rolled fenders on the 42.

heres a good link,

http://toy4two.home.mindspring.com/offset.html

 

The fit is marginal...may require a clip and trim here and there depending on the tire size you go with.
As for look, they'll probably make you car look wider (not sure if that's a good thing).
Personally I would not go with anything less than +45 offset. Good luck.