is anyone running a 215/55/16 on their ls? i got 215/60/16 on it rite now and i need new tires and i will save 400 on a set if i go with the 55 series tires. will anything bad happen if i use these?

they'll just be a little smaller and throw your speedo off a little. you'll also put slightly more miles on the odometer. there are some cals out there but I'd guess around 5%

wat came stock on the ls?

215-60

I put 225/60's on without any problems. Stock 16" wheel.
20872

I have the stock Continental 225/55R16 tires on my '06 LS, at least for the next two weeks. 215/55R16 will cause a speedo error, which will increase as vehicle speed increases; however, it will mean that you'll be going slower than the speedo reads, so it's unlikely to result in any tickets (on its own).

will 225s fit on my car? with the stock rims?

will 225s fit on my car? with the stock rims?
Yes. The picture i just posted is 225/60-16. They are Yoko Avid V4S, great directional tire at $99 each.