Dissolved

I plan to use stock rubber (currently have 18" touring rims).

Which size will fit.

18x7.5
18x8
18x9
18x10

1nate7

iTrader: (19)

This might be a stupid question too, but why do you want to use stock rubber? Getting wider tires is part of the wheel/tire upgrade IMO. I would just run your stock rims until you wear out your tires and then upgrade.

On to your question, I'm not that familiar with Z trims so I am guessing the Touring has 18 x 8 wheels with 225/45 front, 245/45 rear. If those are your sizes you could do 18x8 front, 18x9 rear. A 245 tire stretched on a 9" rim would not be ideal but you could get by until you needed new tires. Just be careful of curbs because your wheels will be really exposed and easily scraped.

NY 350Z

iTrader: (9)

def do not go with the stock rubbers... 1 because they are known to wear quick, 2 because there are better ones out there.

check out some nittos, or continental extremes (nice tread)

just my opinion... i work at a tire place and the only people that buy those RE040's are dealers,customers dont buy them.

Dissolved

i cant afford new rubber, thats the problem.
What are my options, most cost effective.
thanks

chazzg

iTrader: (1)

Stock 18" rims are 8.5 so you can go to 9 in the rear with no prob 9.5 might be streching it a little. get the bigger rims that way you can go with 275/40 when you can afford new rubber.

jckolnturn

iTrader: (1)

You would be much better off waiting until you can afford the new tires and get the setup you want to begin with. You are going to have to live with your wheels. You will be replacing your tires periodically anyway.

Z1 Performance

iTrader: (564)

I totally agree - I know the overall package gets expensive, but its really worth waiting till you can afford a proper setup.

Not only does the staggered setup (say 245 up front, 275 out back) look alot better, you have a literal endless amount of quality high performance tires to choose from in that size - which IMHO, is the biggest limitation of the stock tires.

Plus, if you get the narrower wheels now and then have the money later on for the wider ones with tires, you are basically looking at having to buy everything 2 times - not cost effective at all.

Aftermarket tires in an 18 are really not that pricey in teh first place in cpmarison to the wheels.

Trust what we're telling you - sometimes it is much more cost effective to do it right the first time rather than rushing to get it done at once.