19x10 -6 Front 19x12 -6 Rear
 

Wondering if 245/30 will fit the fronts and 285/30 the rears? idk if 285/35 would be better for the rears.... Gonna have to camber and pull as well. Going for the thin tire look but also want to avoid as much stretching as possible

Have a pic with them on the car?

alright guys...

i just pulled the trigger on a set of forgestar f14s in
20x9.5 +20 and 20x11 +15 with PSP in 265/35 and 305/30.

i´ve done a ton of research and you guys have helped me through a bunch of questions. so i feel relatively confident this will fit.

the plan is to run 2-2.5* camber front and 1.5-2* rear.

so final question. should i have gone more conservative on the offsets? particularly in the front?

The "Will it fit?" thread
 

I had exact same set up, but on 19"s and 255 in front. I ran 1.5 in front and 2 in the rear to give kind of an idea. I'll try and find my alignment print out for you!

much appreciated. my primary concern is the added diameter from going 20"

it´s a 27.3" diameter on the 20" wheel vs 26.3" on the 19"

i´d still love to see your alignment specs.

You should be ok with that much negative camber on a 27" wheel...it will lean in roughly 10mm per degree negative from 0 & same going positive.
my base 11' is stock & has -1.0,,,treadwear even across; but i don't track it.
So i couldn't use the +20 9.5's,,,would be closer to +30 for me.
Plan to run -1.0 in rear w/325's on 11",,,so that's gonna be close to +25 or a tad more.

thanks man. you are always johny on the spot with responses.

i am going to go ahead and back off to +25. it makes me feel better and like i will have more flex the cambers i can run.

i was doing some trig and crunching numbers on a 27" tire face. i got about 12mm per degree of camber.

worse comes to worse i can always throw a 3 or 5mm spacer on there.

you think it´s a mistake to back off to +25?

Look up "Rusty's " ride; i know he's on the [official] 370z fitment guide....he's running 275/35/19's on 9.5+25's & has -2 camber... Looks like he could run less if he wanted.
If you go over aggressive; you could be screwed - spacers are always an option.


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i am gonna back off to the +25. i talked to jason at getyourwheels and he agrees it´s a safer bet.

thanks again. next post will be photos of the wheels on the car. no more questions!

Yeah, I could run less if I only streeted (-1) and still look good. ;) I'm at -2 for track now.

Getting new rubber soon :). This is my daily driver would 265/35 F 285/35 R mess with the handling and turning at all. Been looking around a lot of people say to make the front a little bigger than the front. Thanks for the help.

Pending on the brand; you seem to be just under the 3% maximum diameter difference.
(That's the percentage difference I was once told/ that wouldn't screw with abs/traction control) other knowledgeable members will chime in on this one.
I've just always heard 3% max.


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I will be going with Michelin PSS. Thank you for that good piece of info about the 3% difference.

Both of the Diameter variance according to the Tire size cal if I did it right :). Both are under 3% which is better so as to not to mess with the ride ability. Positive or Negative. If anyone can chime in.

265/35R 19 285/30R 19 shows a -2.17% Diameter Variance.

265/35R 19 285/30R 19 shows a +2.10% Diameter Variance.

:icon17: Look at what you typed. You got the same sizes down twice.

Looking at Tirerack. Mich doesn't make a 285/30-19. They make a 285/35-19, 26.9". and a 285/40-19, 28". So looking at what you want. A 265/35-19 is 26.3" and the 285/35-19 is 26.9". That's only .6" difference. You're go to go. :tup: