ok well the stock wheels are 17x7 right
so they come with 215/45/17 tires
And i bought a set of sendel S15 17x7 +38 offset rims
and they came with ..
205/40/17 tires
so can i take my stock tires and stick em on those wheels???
or can i buy two wider wheels for the backs and put those on?

 

Are your tires still good? If they are, I say put the correct size tires you have on there.

 

Put the stock tires on the new wheels or take the opportunity to get some better ones. If you use the 205/40 your speedo/odo are going to be off a decent amount and who knows what will happen with your mpg.

 

well im replacing the 205s wiht the stocks bcuz one of the 205's has a bad sidewall.

 

whaT THE biggest tire size i can put on the 17x7 wheels...?
225/45/17

o! and is it possible to have two differnt sized tires??
like 215/45/17 on back
and 205/40/17 in the front??

 

225/45R17 is the biggest safe size on a 17x7.

You can run staggered tires but it's pointless other than for look especially with the wider on the rear since you have a FWD car.

You'd need a 205/50 though, 205/40 is way too short.