Hoping the guys at Vossen can chime in.

I'm about to order a set of 20" CV5 or the CV7 and wondering what spec and tire size to order up.
I've searched and not too much info on specs with this 3IS online yet.

 

The new IS can use the same setup as the previous model years.

Specs would be

20x9 ET38 (or E32 if you want a more flush setup)
20x10.5 ET45

Tires sizes Vossen used on their 3IS were 245/30/20 & 285/25/20

 

This is my screensaver right now....

2014 Lexus IS F-Sport on Vossen CV7

 

those rear wheels look like they stick out. What offset would work if you want them tucked in the fender so the car can go lower?

 

Those wheels are 20x10.5 E45, that's is the highest offset Vossen has available in our bolt pattern.

But some of their wheels like the CV2 or CV3 are available in 20x10 E45.

 

do you have a picture comparison between the 20x9 ET38 and the "e32"? and do you mean the off sets when you said ET?

 

That pic is a photoshop. There is a huge thread with pics here or go to the gallery or YouTube to see wheels on the car

 

It is a 6mm difference. Our project 3IS used a +38 but I personally feel the 32 would sit nicer. If you plan to lower your car go +32. If you have no plans to drop it, stay with a +38. PM me with any further questions or concerns, or feel free to call our office.