Skywalker

I suck at figuring which size tires I need. Figured I'd see if any of y'all had any input while I await feedback from the tt.net guys. I'm looking at buying new 2003 Yokohama AVS ES100's
These are the available sizes:
205/40ZR17 84W
205/45ZR17 88W
205/50ZR17 93W
215/40ZR17 83W
215/45ZR17 87W
215/50ZR17 91W
225/45ZR17 94W
235/40ZR17 90W
235/45ZR17 97W
245/40ZR17 91W
P245/45ZR17 95W
255/40ZR17 94W
P275/40ZR17 98W

This is on a 91 Nissan 300ZX Twin Turbo

with Gram Lights 57 PRO wheels, 17 x 8" in front, 17 x 9" in rear.

Skywalker

More info:

Car is not lowered and probably never will be.
I like rubber attached to the wheels; nothing too low-profile; I don't like to feel every bump in the road.
Car is daily driven on shitty DC highways.

drifter

P235/45ZR17 97W Fronts
P275/40ZR17 98W Rears

Skywalker

Thanks for the suggestion. How did you determine that? I might as well learn something here.

CHAHONDA

what size are your factory tires???

this will help to determine the plus sizes that you can use with out throwing off your speedo readings!

Blasphemous

I know 245's are about the widest you can get on an 8" wheel. I read somewhere the way to figure out the biggest tire you can fit on a wheel is to convert the width mm into inches (i.e. 275mm = how many inches?). then, divide the wheel width by the tire width and it should be right around 90%. There's an actual formula to do that by, I just don't remember what it is.
VERY nice choice in wheels also, probably what I won't end up with, but would really like. What kind of prices do they go for? I've been looking at some Konigs, but I want something 10" in the rear... 17x8 front and 17x10 rear (once I get the fender flares).

turbotwista

look at the specs on tire rack they tell you the suggested rim size and much more

GreyGT-C

Car will probably have one helluva push w/ that small of a tire upfront. I'd max the front 8"s out w/ 245's..... What RWHP are you looking to make? 275's might be too much or not enough depending on HP. What is the weight of the car also? You know the car weight F/R ratio?

drifter

i figure, since you may be planning on making high HP, and 275 was your largest choice, you may as well put that size on the rear...even if its too large now, when you modify your vehicle you wont have to buy a new set of tires....235 in the front maybe was a bit small...looking back, i would probably change my suggestion to 245 in the front...good luck man!

btw..how much do the wheels weigh and how much do your stock wheels weigh?

Skywalker

225/50/16
$1900+; I can get them for $1600 and some change.
Probably never more than 500hp.
3475 lbs
55% front, 45% rear
I think the GL's are 16lbs; not sure about stock wheels.