I have already seen many many people get 19s for the Z.

Why?

I am thinking 18s are more than enough and I would imagine that 19s would decrease performance. I am just considering getting wider 18s in the back as there is way too little traction for the output from 245s.

What does everyone else think?

 

Well, for me, the looks were worth the 1-3lbs diff between 18 and 19". Hell, my new wheels will be lighter than stock. Also, since I'm gonna run 245/40/19 tires front, im giving up very little sidewall vs. stock. So in the end i will have a wheel that fills the Z's massive fenders much better, that are lighter than stock, are brushed aluminum just like the handles ect, AND, tires that are still quite tall.

 

But, strictly performance-wise, do you think the 18s would be better (that are wider of course)?

 

Maybe, but instead of going by numbers, go with soemthing that will please you the most everyday. Now that very well could be a set of 18"s, who knows...

 

Hey, Igor

Actually, 18's will perform better than 19's in most cases due to the availability of better performing tires and the sidewall deflection they allow not to mention the tires are typically lighter than the 19's

 

thanks Luke, that's what I thought.

 

Don't forget that increasing the overall diameter also makes the gearing that much taller and increases acceleration times. The difference is pretty miniscule, but still hurts performance rather than helping.

 

Exactly .... why 19's? Get 20's already! LOL

Going with a bigger size is all about looks... at least with 20's, you can say you're rolling dubs!

 

in my case I am currently eyeing 19s because I was hoping for 15" rotors, that require a 19" rim for clearance.

that is all of course, overkill, so I might only get 18". who knows, the difference is in the area of 2-3lbs. and the shorter sidewall can offer better steering response.