http://www.rimsntires.com/specs.jsp

I found the answer to this set up in the link above 245/35/20 FRONT 275/30/20 REAR

It seems that the front tire have smaller width is less taller than the one in the back even they both have the same sidewall

for example
245/30/20 275/30/20

smaller taller

with this size the front tire is 18mm smaller than the rear tire. FRONT 656mm and REAR 674mm.. WHY? don't know but this may be why people use different sidewalls in the front and rear...

NOW with 245/35/20 = 680mm FRONT and 275/30/20= 674mm REAR
difference only 6mm which is not that bad it may be equal after all the weight of the engine drop on the wheel....

 

I was checking for you and you may be fine i dont know the offset for your car but go to this link for more info......

http://www.rimsntires.com/specs.jsp

play with the numbers....

245/35/19 24+ 679mm height

275/30/19/24+ 675mm height only 4 mm difference...

 

Well you wont be able to run those wheels then.
You will need to run a few degree's of negative camber with the widest tire being a 255/35/19. If you want flush with factory camber then you will need something closer to 38mm offset.
The first pic is 20x10 +25 with about 1" drop and .8 degrees of camber (within factory spec).
The second pic is the same set-up but with a 19x10 +42mm offset.
255/35/20 first pic and 275/35/19 second pic

For some strange reason my first pic didnt show up....this pic is the second one (+42 19x10)

 

Here is the 20x10 +25.

Both pics are of my sedan and nothing changed (suspension, camber,etc) between the two pics other than the wheels.

 

Yo listen to him he knows what it is!!!! he is right i know for a coupe it fits but dont know for a sedan....

 

Tire number broken down.
245/35/19.
The 245 is the width of the tire in mm.
The 35 is the sidewall. it's a percentage of the width so in this case it's 35% of 245mm.
19 is the wheel diameter that the tire mounts to.
As you found out, 30% of 275mm is close to 35% of 245mm so thats why people run 245/35 front and 275/30 rear.

As far as wheels go, check out axis wheels, some of their wheels have a large lip. I have the Penta's and on the 10" wide wheel the lip is 4.25".

 

very helpful
thanx

 

Yeah i didn't know that until i saw it on that website... can you please post some pics of your G35 so i can have an idea how it looks..

 

so you have a 25+ offset and you have 4 1/4 inches right?

then i just going to stick with mine... to get 4.5 or 4 1/2 inches i need a 20+ offset.

 

Here are a few pics I have

 

another

 

Not sure why my computer is being an *** but I can only post one pic at a time.

 

Yes 4.25" lip @ +25.
I believe on the same wheel at +19 would give you a 4.5" lip.

 

What about an 18x10" +25 on a 2nd gen sedan? (Or should I reference the above 20x10 +25 pic posted by 4D05G35 in post #1819?)

Also should I go with a 245 or 255 tire?

 

i like the lip of the wheel i just don't like the design!!!! i was looking more like a 5 spoke wheel type...or just spokes no branches like those axis pentagon, their nice but not my style....i think petrol have the same wheels for the same price....on elementwheels.com