betamotorsports

iTrader: (1)

Thanks. Have a nice day too.

RandomHer0

iTrader: (9)

lol

mgrotel

iTrader: (3)

adiddyrundacity

^ nice wheels dude.

I was about to buy a set of enkei rpf1 9.5 +15 n 10.5 +15.
I was going to do 255/40/18 front and 285/35/18 rear . I also have a g35. This is my summer street car.

Is this a bad track setup? and what will the effect of having the 40 sidewall front and 35 rear sidewall have?

mgrotel

iTrader: (3)

i dont have any experience on if that will be a good/bad setup. as far as the 35 vs 40 series tires, with those sizes, your rear sidewall height will be about 99.75mm and your front sidewall height will be about 102mm. you might be ok, or your yaw sensor might not like that too much and your car could drive funny. if it were me, i would keep the aspect ratios the same front to rear, but its up to you whether you want the rear to be wider than the front, or a square setup. my .02

mgrotel

iTrader: (3)

reserved

iTrader: (18)

^ so which wheels, sizes, offsets etc is your new set up?
(they certainly look good)

scotts300

iTrader: (46)

I don't like it. 285/35 on a 10.5 +15 may be a bit too wide as well, depending on which tire you choose. You also want the same aspect ratio front and rear in this case, like 255/40 with 275/40 or 255/35 and 275/35.

Agreed, and thanks for the follow-up OP. Most just ask questions then disappear.

mgrotel

iTrader: (3)

thanks, went with some nismo lmgt4's

front: 18x8.5 +25 with 255/35s
rear: 18x9.5 +30 with 275/40s

id rather have the same aspect ratio for the tires front to rear but i got a great deal on these so i couldnt pass it up for now. might be widening the front wheels eventually and run a square setup, either 275/35 or 275/40

mgrotel

iTrader: (3)

a 285 tire is too wide for a 10.5" wide wheel? really? then that would mean a 275 is too wide for a 9.5" wheel too then?

scotts300

iTrader: (46)

I meant too wide for the rear on a 10.5 +15 in the rear. The tire itself is not too wide for the rear. The 275 on the 9.5 is ideal.

mgrotel

iTrader: (3)

oh, gotcha

adiddyrundacity

I have a g35. i dunno if that makes any difference?
also between a 35 and 40 aspect ratio, the difference seems so small, ie. less than 3mm. Would it really make a noticable difference??? Ill try and get a 35 series for the front too, I was just getting a 40 series for comfort, as in the summer time, this is my daily driver as well.
Also I was planning on running hankook v12s on it.

mgrotel

iTrader: (3)

i like those hankook v12s. about the aspect ratios, the ecu wont like it if the tires are taller on the front than the rear

terrasmak

iTrader: (8)

V12's !!! I would not buy them for track use.

RPF1 in 9.5/10.5 +15 i would run
275/35 front 275/40 rear My current setup
275/35 front 285/35 rear My next setup
265/35 front 285/35 rear
275/35 front 285/35 rear

255/40 and 275/40 is my daily driven setup with V12's.

mgrotel

iTrader: (3)

do the v12s not have a stiff sidewall? or why are you recommending them to not be used at the track?

mgrotel

iTrader: (3)

so, if its a 9.5 +38 (which is what the lmgt4 front would be if i widened an inch) then with a 275/35 there would only be 1mm of clearance to the spindle?

dang it, i was hoping that setup would work

scotts300

iTrader: (46)

The height difference between a 275/35 and a 275/40 is 27.5mm, or over an inch.

Yes, and that's too close. You could run a slip-on shim spacer. That's what I had to do with my 17x10 +25 FN01R-Cs, as the wheel was only 1 maybe 2mm from the spindle.

terrasmak

iTrader: (8)

Great street tire, but it does not handle the heat a tire will develop on the track. Hankook RS3 would be their streetclass of track tire. Yes they also have a soft sidewall. I have no problems daily driving on them.

mgrotel

iTrader: (3)

ok, i guess ill just run spacers then, ichiba v2 which are hubcentric and have press in studs. dang, i really wanted to get away from spacers on the track