Dont know what to do!?!?

[Isr]

ok, heres the dealI need some expert advice/help.

I drive a 95 240sx/se and currently need tires b/c im outa inspection The other day someone left a note on my car while I was working that read: I have custom wheels from my old 95 240, will sell cheap. So I called the guy and got the specs on the rims/tires. and he will sell everything for $400 to $425. The specs on the rims are 18"/ 7.5 wide and the tires are 245/40/18 rear and 225/40/18 front.My question is will these fit my stock suspention with out any major modifications and or rubbing anywhere. I measured the diameter of the tire compaired to the diameter to my current tires and the difference is about a inch and a half

so here is the delima should I buy these rims/tires for the same price that I would spend on a new set of tires???

and btw here they arehttp://www.motegiracing.com/wh...ction=

tried to downsize the picture as much as i could...

thanks for any/all help