I just bought a 2005 350z roadster an it has 255/30/20 in the front an 275/30/20 in the back an it needs new tires! An I don't know what tire size or what tire to get? Should I stay with the same tire size? Plz help.

 

Get the same size, they are perfectly matched

 

You don't think 245/35 would be better for the front?

 

It would cause alot more understeer than what you have now.

 

He is ridding on 20s

I don't think he knows what understeer is

 

I agree with terrasmak. Go with the same size tires you have on the car now. You will experience some under-steer, but it will feel OK.

 

Sell them on craigslist and get some oem 17s or 18s if your worried about performance... If your keeping the baller wheels that seems like the right size why would you want to change what obviously works?

 

The Z should have tires that are staggered in height , your current or 245/30-20 in the proper size to keep the electronics happy

 

We typically run a 245/30-20 275/30-20 combo.