what other v6/tt/awd 90's jap cars can you remember?

[PJ Prendergast]

if that MOD didn't delete the comments i could prove that he was literally mocking my dad, who suggested basically that everybody in the thread needed to control their-selves. he first started by asking him to use proper punctuation (i guess he was using "....." a lot), and then when my dad replied again the MOD was like "thanks....for...the.....input" clearly mocking MY DAD, and I get suspended? some dickbag 26 year old is not gonna say that to a 49 year old man in person... fuck him i'm gonna make this work haha

[PJ Prendergast]

Oh hey Teece!

And yeah that is sort of rediculous. You did nothing wrong but drop the F bomp a couple of times and direct it towards a moderator.

As for trying to be helpful, all my knowlege is from Subaru's with mechanical diffs, I really have no knowlege of how the vr4 works, But as long as you get the rolling diameter exactly the same you should be okay. I would say running the same width all the way around is your best bet, but since you already have the wheels you will need to experiment with different sizes to get everything right. I cant think of any Ive seen off hand but you could search around to see if there are any quattros, subys, evos, etc running a staggered setup.

I dont suppose you could fit 12s up front too could you haha?

i haven't tried but i honestly don't have the money for either all 10's or all 12's. a forum member on here (Ollie) is making a deal with me where my dad and i help him with the paint and bodywork on his M3, and in exchange for our labor he's hooking me up with these wheels and helping me out with the set up and fitment of them. his car is sitting in my yard for the winter and possibly into the summer, and depending on how much i get for my E30 (after i fix the rust, paint it and sell it), my dad said he's willing to help me buy ollie's car as my own track and possible drift car, so i'd just buy the wheels from him then most likely, but for now they're basically getting fronted to me.

and i looked into it on 3si at one point (till i got suspended), and running the staggered set up isn't an issue as long as the rolling diameter is the same, so we have to figure out some careful calculations so i can match the fronts, but at the same time i don't want an insane amount of stretch

[Jlyons617]

you dont have to worry about the width as much as the height. The height difference if not within 6-10% (I believe) will cause the front wheels to spin differently from the rears. this changes the speed of the driveshafts which will engage the viscous differental all of the time which is not intended and the unit will fail very quickly. Here's a good link I read when I was looking at AWD's in school

http://www.syncro.org/VCTest.html

[PJ Prendergast]

thanks man! i just gotta figure out what tires to run on the rear that won't be such a crazy stretch but match my fronts. i'll hopefully get some progress pics up within the next few weeks! i wanna order up everything i need and just get it on the ground all at once and have it finished

[laBeef]

I've had a similar thing happens on a different forum too.

[PJ Prendergast]

QUESTION:

my friend ollie is helping me figure out tire sizes for the 18x10 and 18x12 wheels i wanna run: if i can find 4 used tires, i'd run 225/40 up front and 255/35 for the rears, which would have a 1.53mm rolling diameter difference. but since i'm broke i could get 265/35's for the back and have a 2.54mm rolling difference. if i wasn't still suspended from 3si i'd ask there but i'd get ripped apart anyways: my question is would either of these differences really destroy my VCU?

[Jlyons617]

Whats the percent difference between the two? if its less than 5% than you're probably good.

[PJ Prendergast]

well i'm bad at math so i asked ollie, and he said way less haha looks might i may take the cheaper route till i camber-wear the crap outta these tires thanks for the input man!

[PJ Prendergast]

ordered my adjustable spacers! the current tires i have on here are within my 5% (we think) so you guys may see some pics sooner than expected haha i also have my 3sx adjustable camber arms ordered already, so i'm hoping we can get this fitment dialed the next time i'm home

[Vito]

Ive always had a sweet spot for the 3000gt, nice ride. cant wait to see the finished pics !!

[padraigmk3]

Hey dude, just checking out your build here.

1) Ollie rules and I love his yellow sideways lemonbread-looking car



2) It's best to just ignore the people who give you a hard time on the internet. Most forums take things too seriously and lose sight of the fact that modification is about freedom of expression and pushing the limits of performance, Not being some mister bossy-pants cunt swatch on an internet forum

3) With the new wheels your cars going to look sick. Why is it you're so opposed to rolling fenders though?

4) can we get some shots of the test fit wheels on the car from a distance? The pictures you uploaded are a tease haah

[ZammoTheChoppa]

QUESTION:

my friend ollie is helping me figure out tire sizes for the 18x10 and 18x12 wheels i wanna run: if i can find 4 used tires, i'd run 225/40 up front and 255/35 for the rears, which would have a 1.53mm rolling diameter difference. but since i'm broke i could get 265/35's for the back and have a 2.54mm rolling difference. if i wasn't still suspended from 3si i'd ask there but i'd get ripped apart anyways: my question is would either of these differences really destroy my VCU?

From personal exp most post 2000 4WDs with traction control will have issues like stuttering and viberation from even a 1mm differance had it happen when changing a flat to the unused spare in the first couple months but it only really bad under heavy loads and cornering and excellerating hard from 70-80kmh very occasionally when doing full lock slow turns. now the first time in the audi we didnt know this we hit some small steel plate wich sliced the side wall there were no problems when we took it easy on the space saver spare. the prob didnt occur untill we bought 1new wheel and it took some time to work out the prob as it got progressivly worse and all the elecs tried to compensate for the non exsistant wheel spin the fix came in the form a a full new set of shoes had similar things happen on both porsche subaru and the australian ford territory i have heard that some newer cars can compensate for slight wheel size diff and cars without traction and or spin control shouldnt have a prob. its possible that older sustems wont detect it either because the sensors, sampling rate . and processing cant detect the smaller differeces.i dont know the 3000GT system other than the one i drove was pretty awesome if driven properly. you could try it out to test it, even if you dont notice anything it will still cause some premature wear and stress on all driveline components esp VCU


tl;dr
You need symetrical dia wheels unless your rich and you like replacing DL components

[mshriver]

^ good info.

Automatic subaru's from the 90's and possibly newer all have a fuse holder under the hood that turns the car into FWD. Its supposed to be used if you have to use the spare tire on one of the rear wheels so you dont screw up your dif. Theres no traction control on those cars, but it was put in place by the manufacturer just in case a different diameter wheel (spare) was used. (Why they didnt just make room for a full size spare idk)

Not as good of info as Zammo, but just some pre 2000 knowledge from an awd manufacturer

[Capt. Obvious]

A few mm difference between tires won't cause any discernable vibration/grinding/popping/wear on your differentials. Do you really think tires wear perfectly even all around on cars? Give me a break and stop spreading unfactual information about AWD systems. It doesn't matter if it's torsen, viscous, Haldex, or some other variation; they are engineered to have rotational variation amongst the tires (torque/rotational differences is how they work in the first place).

Find me ONE example of someone on any forum, anywhere, for any AWD car brand that has blown a diff from running staggered width wheels with properly matched tires.

General rule of thumb for staggering tires on AWD cars is the keep the overall diameter within 3% from front to rear.

With 18x10 and 18x12s I would recommend any of the following combinations:

225/40 and 265/35 (.87%)

235/40 and 265/35 (.4%)

235/40 and 275/35 (.67%)

Personally, I'd go with the 235/40 and 275/40 combo because 3000GTs are pretty big cars and deserve meaty tires.

Also, that combo will give you the most symetrical stetch from front to rear so you don't have barely stretched tires in the front and super stretched tires in the rear.

If you want to play with more tire size combos, I like this tire calculator:

http://www.1010tires.com/TireSizeCalculator.asp

[Icana4dit]

Goddamn I need a set of those wheels, tell me if you ever wanna sell them!