I run 235/45/18 on Z springs no trouble at all. I think 245 would be fine too.

 

the problem with 235/45-18 is that not many tires are offered in that size. i have yet to find something decent in that size... 245/45-18 is a lot LOT more common.

 

Yes, 235/45 is very limited selection...but the Kumho Escta SPT's are a good tire and cheap.

 

CFaber,

I went with HP EVO Lightning- hypersilver dark in 18x8 all around with +38 offsets. The tires are General Tire Exclaim UHP from www.tirerack.com
They are pretty cheap and got lots of good reviews. So far they have been great in wet and dry conditions ( no snow experience yet). The tech area at tirerack is a good place to check if the tires you want will fit well on various rim widths. I like the slightly wider stance than 235's and there were very few choices at the price I was willing to pay.

 

i had the 245/45-18 ContiExtremeContacts installed yesterday afternoon. Just a few miles on them, but so far so good.

 

Did you drop it also? Post some pics.

 

it's been dropped on complete '06 350Z suspension.

i'll get around to posting some pics soon.