Honestly, i would love to get some te37 in 19, but cant find em, anywhere, (if any sponsor has them,in correct fitment, pm me), i am 37, and truly, wont lower the lexus,its my daily, and i want it to be comfy, with that in mind, whats the biggest tire you can run on 19, keeping it comfy,i dont caremuch about speedo accuracy.

Also i will be installing a lexon kit,i do like, some of vossen wheels, and they are cheap, so i can chage em,if i get tired of em...
So what wheels and tire sizes you guys recomend?

 

Honestly, you can lower the car on RSR down springs it's just about an 1" drop. I had 19 Vossen CVT and now running 20" Vossen VFS2 and I don't ever rub either I running 20x9 and 20x10.5 f: 235/30/20 and r: 255/30/20 when I was on 19" I ran same up front and 260/30/19 in rear

 

I really dont want a lower profile, than what we get from factory, lowering for nnow, wont happen, whats the biggest tire you can run on 19's and 20's?
I am looking for the same or bigger tread wall(side)

 

Wheels choices in 19"
Advan gt
Vossen cv3
Lexus fsports in 19"

What you guys think?

 

I'm planning on running 245/35/19 which will be 2.6% off stock on the high side (larger).

At most, a 235/40/19 would be jusy over 5% variance. I don't think I'd want my speedo off any more than that.

Here is a calculator. Find whatever rims you want, then decide on tire size:
http://www.1010tires.com/Tools/Tire-Size-Calculator

 

I have RSR down springs in my F-Sport and I don't feel the ride quality has been compromised at all.

 

Vossen CV3 is the real deal...but then so are all of the other Vossen choices...

 

You are comparing forged wheels to a cast.
I think that's a easy choice.

 

There are a lot of great choices in the 19" application for the IS you can run

Vossen,Niche, Rohana, MRR etc.

a good bang for you bucks choice is the Niche line or the Ground Force line.

I have done a number of the 19" GF wheels on the Is and they look great.

 

your stock wheels are 1 piece forged....so stick with 1 piece forged otherwise you would be downgrading IMHO. your stock wheels are 28 lbs...add that to whatever the stock tires weigh and try to stay at that weight or lower. you have to think about the tire weight too because im assuming you're going with bigger rims which means more rubber which means more rubber weight. The TEs would be a great choice...they would easily be under 20lbs or a tiny bit over 20lbs per rim even at the bigger sizes which will easily compensate for the additional rubber weight and they're built tough... =)

modifying doesnt always equal upgrading...i always keep that in mind

contact counterspace garage for your Rays wheel needs... ask for Mike Kang

good luck!!

 

I don't know where you get that information but the stock wheels are not forged.
They are 18s and around 28lbs.
That's way too heavy for being forged.
The stock G35 forged19" are around 20lbs which are bigger and almost 50% lighter.