Originally Posted by VinceThe1 (Post 3200836)

Why not just move the rear 285s upfront? Saves money and 285/35R19s are perfect in outside diameter. :tup:

Originally Posted by RBfastback (Post 3201085)

I may be looking too far into this but maybe someone can enlighten me.
For rear Nismo wheels changing the stock 285/35/19 over to a 305 everyone says to go with 305/30/19 but that doesn't make sense if ur doing it for traction because u may gain about .79 inch wider but your loosing overall diameter -2.04 inch or -2.4% circum. so it's a wash from what I gained going wider.
but 305/35/19 u gain .79 wide and gain 1.73 inch or 2.1% circum. and that's less of a difference or change then oem size so your speedo would technically be more accurate with the 305/35/19 even tho it's a small difference but that means slightly more meat.

all the percentages are less of a change for 35 series tires

Originally Posted by fpenvy (Post 3201092)

go look up 305/35/19 on tirerack and tell me what you find.



:bowrofl:

Originally Posted by RBfastback (Post 3201095)

damn...

Originally Posted by RBfastback (Post 3201154)

diameters aren't really my goal, it's for now while I have stock wheels I'm looking for the most traction possible for the rear for when I f.i. my z.
idk where I was reading it about going from 285/35/19 to 305/30/19 isn't as much grip (in a strait line) as u think because of the loss of circumference. obviously when cornering it's better.
only options I can find on the calculator are 295/35 but that's such a minuscule difference and there more expensive or 325/30 and those look like they would be amazing but I don't think it will work in the 10.5 rear nismo wheels...
any thoughts aside from new wheels cuz that won't be for awhile.

I plan on using PSS tires

Originally Posted by RBfastback (Post 3201224)

can only get 315 in drag tires.

Tire rack shows the 305/30/19 Super Sport tires to be 12.1" wide (307mm) and 26.3" tall.

It shows the 295/35/19 Super Sport tires to be 11.9" wide (302mm) and 27.1" tall.

width is almost the same but wouldn't there be more acceleration traction with the 295 because of the taller sidewall and only a 5mm difference in width?

Originally Posted by RBfastback (Post 3201085)

I may be looking too far into this but maybe someone can enlighten me.
For rear Nismo wheels changing the stock 285/35/19 over to a 305 everyone says to go with 305/30/19 but that doesn't make sense if ur doing it for traction because u may gain about .79 inch wider but your loosing overall diameter -2.04 inch or -2.4% circum. so it's a wash from what I gained going wider.
but 305/35/19 u gain .79 wide and gain 1.73 inch or 2.1% circum. and that's less of a difference or change then oem size so your speedo would technically be more accurate with the 305/35/19 even tho it's a small difference but that means slightly more meat.http://images.tapatalk-cdn.com/15/05...131996b4e4.jpghttp://images.tapatalk-cdn.com/15/05...94e4a65a29.jpg

all the percentages are less of a change for 35 series tires

Originally Posted by Zipper1 (Post 3201040)

I would do as suggested, im just not sure i could lower the car with that size up front. I have yet to see this done
with a drop. Anyone?

Originally Posted by RBfastback (Post 3201154)

diameters aren't really my goal, it's for now while I have stock wheels I'm looking for the most traction possible for the rear for when I f.i. my z.
idk where I was reading it about going from 285/35/19 to 305/30/19 isn't as much grip (in a strait line) as u think because of the loss of circumference. obviously when cornering it's better.
only options I can find on the calculator are 295/35 but that's such a minuscule difference and there more expensive or 325/30 and those look like they would be amazing but I don't think it will work in the 10.5 rear nismo wheels...
any thoughts aside from new wheels cuz that won't be for awhile.

I plan on using PSS tires

Originally Posted by VinceThe1 (Post 3201260)

Oh 325/30R19s fit just fine on stock Nismo 10.5" wheels :)



Check out my thread on that exact subject:



http://www.the370z.com/wheels-tires/...5-30r19-r.html

Originally Posted by FPenvy (Post 3201239)

in theory im sure but i'd say find some test results lol



but at that point it's splitting hairs. i'm also a fan of RE-11's over PSS's anymore after I realized how much stiffer the sidewall on the re-11s are.

Originally Posted by RBfastback (Post 3201315)

yeah I know, I'm always splitting hair's on my hobbies lol.

but for me the pss is a better choice right now because it's my dd and more of a well rounded tire also better in rain. I live in sw fl so rain is almost an every day thing in summer.
once it's not a dd I may switch to the re-11s they look like a much better track tire