will these wheels fit on the rears. please advise.
 

hello. yes before you all jump on me that there are other threads i dont care. i'm lazy and dont feel like searching through 100 pages of nonsense when i can have answer in 5 minutes directly.

looking to do a drag radial set up on my rears.

i have the sport package and originally was going to put 305/35/19 mickey thompsons on them to save money on wheels. i think thats a bit of a stretch when stock tire is a 275. also most people are telling me to drop to a 18" wheel for more meat and weight reduction.

set-up i found and like is 18x12 wheels with either:
305/35/18, 315/30/18, or 345/35/18 (if they fit)

wheels i found that i like for price, look, weight are

https://fbcdn-sphotos-h-a.akamaihd.n...84147606_n.jpg

wheels specs are:
Size: 18x12
Pattern: 5x114.3
Offset: +20mm
Hub Bore: 73mm
Lip Size: 4.25 Inch
Weight: 27 lbs

now question is will these fit in the rear based on the offset?
will they clear rear sport brakes? (im 90% sure they will)
and are 345 too wide for the rear of the Z?

thank you in advance.

http://www.the370z.com/wheels-tires/...nder-roll.html

:)

Let me Google that for you :tiphat:

I would PM phunk because he drag races his car and was mentioning he needed more 0 camber but cannot reach it.

i already did. and yes 0 camber is ideal for drag racing because it gives the most surface area contact of tire and track which then results in more traction.

i drag race a lot lol :tiphat:

Yahoo works too!

What is this "yahoo" you speak of?
Some type of drink.

noo noo noo thats yOhoo lol :bowrofl:

funny little trolls already in here :shakes head:

still waiting to hear back from phunk

yes, it should fit in your trunk no problem! :tup:

this is why we arent friends :bowrofl: :yum:

:bowrofl::bowrofl:

well played sir :tiphat:

They definitely fit in the back, as I have them. You have to grind a couple MM off the top surfaces of the (sport) brake calipers to fit... without grinding they go on but they are scraping bad.

The wheels fit well, but I wish they were not quite as aggressive on the offset.

My car is lowered on H&R springs and aligned to -1.4 in the rear. The wheels and the 315 35 18 tires stick out of the fenders quite a bit, perhaps 1/4" or so, so not real bad. (say goodbye to the paint on your sideskirts lol, mine look sandblasted)

Fortunately the suspension cambers enough on compression to tuck inside the fenders on launch or bumps. I am unable to estimate how much closer to 0 camber I can go before they will strike. When I begin to prepare the car for the track, I will use a ratchet strap on the rack to pull the rear end down and see exactly how much more I can go.

I was going to attempt a 335/345 tire. I can see that with this aggressive of an offset, that is not going to happen, no way. It may work on cars that run more negative camber, there is quite a bit of space on the inside. But at my camber or closer to zero, a 335/345 on a 12" +20 wheel aint happening.

thanks for the info.

i'm on stock suspension and OEM camber/alignment

i'm just looking for better traction, 60' times, and obviously better ET's.

my 12.899 @ 110.74 on street tires and stock suspension etc. just isnt fast enough for me.

i cant believe that you had to grind the calipers for the rota's. my 19's clear the rear brakes so much i would never imagine that 18's would touch.

Most 18s would not touch, but these rotas get very small on the inside just behind the spokes. The inside barrel tapers a ton between the inside lip and just behind the spokes.

i may just have to find a different set of 18x12's then. 18's give more tire options and more meat available over 19's.

i think with stock suspension and alignment i may be ok on my fenders with 315 tires.

The combo on my car in good, but it needs works. I dont think that it would make you happy for your application, without some refinement.

VS the 305/30/19 Toyo R888 I was running before, this combination has resolved my issues of spinning the tires through 2nd and 3rd or occasionally 4th.

However, this has not allowed me to REALLY launch the car yet. The other day I was out practicing, and I still cannot get the car to 60' real hard. I think that I have to get closer to zero camber still... when I launch the car and it squats, the tires must just camber in too much. I wasnt heating the tires up yet, but I could just feel that the car couldnt pull as hard as when it doesnt squat as much, meaning my contact patch was sucking hard.

This launch of course is occurring outside of any of my HP gains from boost. Then coming out of a just barely bogged launch, by 5000rpm the tires start roasting again.

So what I have found is that gears 3-6 I have 100% traction now. Second gear is USUALLY great. There have been only 2 instances where my car caught me off guard and lit up 2nd gear on grooved concrete since I put this combo on.

What I am getting at though, is that while this combo has solved a lot of the issues I was having... I dont think anything it solved is a problem on a NA 370z. I think that the NA 370z who goes to a drag racing setup is mostly just worried about the launch... and the dead stop launch with my combo still needs work.

edit: or perhaps i still need to practice some more and heat them up before i say for sure... but at this point I have not yet been able to get my car to launch hard.

i'd have to agree with the end of you comment with my N/A 370 is mostly concerns on launch. as of now i dont technically "launch" my car. it's just 100% brake to 100% throttle. no holding at any RPM since when i do that all i get is terrible wheel spin. when i do it my way i've cut a 1.95 60' on street tires which i feel is pretty good form my power level/tire combo.

i feel that with a wider/stickier tire set-up i can then actually launch the car at like 2500 or so RPM and possibly cut my times down. to do this though i just need to pick a set-up and hope it works i guess.

If you were close I would just let you try them on for a couple passes!

I believe that I was also getting 1.9 60's leaving the line how you said, before i put the turbos in.

another thing that could possibly be working against me right now is my clutch. I have a hard time balancing my launch between clutch dumping tire roast or clutch dumping bog. my clutch is an on/off switch and its really damn hard to ride it out for a second and get a clean launch. I already purchased but have not installed the RJM peddle to see if I can stretch out the almost non-existent sweet spot in my clutch.

luckily i'm 7AT so no clutch dump needed lol

but as for proximity Chicago and pitt isnt really close enough to just go for a cruise and test wheel/tire combos lol i appreciate the offer though.