hydralisk

Just needed some more opinions.

I know its possible to run 18x9.5 +45 on 285/30/18 Kumho v710.
I want to run 18x9.5 +22 on 255/35/18 Toyo R888.

The tires are the similar diameter (1.2 percent difference)
They are 30mm different in section width. The Kumho are 11.4" in width and Toyo are 10.2". So I can take 15mm off the outside and inside of the tire correct?

So I should only be running 8mm more aggressive. Did SCCAforums have his fenders rolled? 8mm seems to be an easy roll/pull away from a good fitment. I wont run super slammed on the coilovers.


How is my theory? (I got thick skin, let me know)

wsMB

hey hydralisk. werent you on my350z?

hydralisk

Man I was hoping for an answer lol. But yes. I had a blue 350z on mag blue +12 te37s. I didnt know people knew me but how many people use starcraft characters for their screenname I guess.

hydralisk

To lay out my math:

+45 mm offset from SCCAforums wheel
- 22mm offset from my wheel
= 23 mm more aggressive wheel.
- 15mm tire cross section difference (30mm total, but 15mm on each side)
= 8mm more aggressive wheel/tire combo.



The wheel in question is a limited edition Mag Blue TE37 Superlaps. Insanely light. Friends thought it was a fake display wheel from lifting it.

wsMB

i just remember your name from the forums. i had a stretched and lowered z. 18x10+4 and 18x12+3. i have some dpe's right now 19x10-10 and 19x12-7 gotta sell tho. cuz it wont fit the new ride

hydralisk

Haha thats sick. So you traded in the Z for a grandpa sedan too? These high offsets are killing me.. I never thought +22 would be aggressive.. even EVO guys can run +12. The Z could run unlimited offsets it seemed, i loved it. Hopefully one day we will figure out how to adjust camber on these cars.

wsMB

exactly what im saying. the Z seemed to have infinite space in its fenders. now its like +30 is aggressive. hahaha i dunno if its a grandpa sedan. but much more comfortable then my z i must say i miss having a manual. but everything else is better in the F then my Z. and i dont want to run stretched tires on my F cuz i feel like when im full throttle and that tranny bangs into the right gear i always feel the rears break loose.

hydralisk

Haha yea, I do miss having a manual as well... alot. Just wish more people modified these cars besides 20" wheels where the owners dont even know their own offset.

lukeisf

Pm figs on here and he will let you know what should work. He has a.way to fit 305 on the rear with no fender rub.

hydralisk

Alright, thanks Luke.

wsMB

yah its crazy. i think im just gonna try to go with a square set 9.5's on 285's all the way around. get the most grip i can or something since i cant go aggressive

FIGS

iTrader: (11)

The assumption is sound however the tire sidewall profile could be drastically different and that is "the rub."

I can check with my tire guy the next time I talk to him and see how the two differ in mounted profile. Things like rim gaurd and sidewall taper are huge, not just nominal section width.
+22 on a 9.5 is aggressive for this suspension and the lip is so big its pretty easy to shave 5mm no problem and up to 9mm or so with a shave and a hem. The next issue becomes the fender seam at the bumper joint which also needs a detail trim.

Currently I have a 295/30 on a 19x10 +53 and with both a shave and a hem I am super tight at deep tuck. Rubs on the side I had to emergency roll but fine on the other that I had all day to roll in detail. But that is because a PS2 has a hell of a shoulder on it.

There is a lot of tunnel space, so I would just scale it back a bit, 10mm and you might squeak by. Or spend many hours at the wheels shop trying out various tires mounted to your wheels like I have. I varies a lot from barrel manufacturer to manufacturer, tire to tire.

Worst case you can fine tune your geometry with some of my products to get a more favorable fitment. Sorry its not a Z

Fig

hydralisk

Hahaha, thanks Figs.

Im just saving up some money but definately have been looking at your products. (Damn stock market is bipolar). I will definately spend a day rolling and trimming the fenders, but looks like now I need to start comparing sidewall properties. Thanks for that idea. My second choice of tire was the Ventus Z214 in 245/35/18 for a bit more taper and room but id rather trim fenders than to start stretching too much.

hydralisk

Cant go wrong with whats already proven! Im just trying alternatives, who knows what we can all learn from it.

Mv350

iTrader: (23)

ok so here we go

Your rear end has an extra 1/2" wider track on each side sompared to a standard isx50.
roughly 12mm less clearance. which means running a 9.5+22, is like running a and 10.5+22 on an IS350.

Here is what you will have to deal with about with that offset


this would be about what it looks like off the ground, without camber, with poke. you would have to slightly pull you fenders to fit any sort of wide tire on a 9.5

i wouldnt suggest this on an F, if anything, run a 10" wide square setup with 265/35 +35 all around, that would be 18mm less aggressive and gives you the extra room for tire that you want, still requires to roll all 4 fenders. i hope this helps.