different offsets??

[IcemaN]

hey guys,
im a bit of a noob when it comes to this. so here i go.
i got a free set of rims the other day off some model accord. deff not a euro. anyways, the offset on the rims is 55 and i think the dc2r rims are 42. the stud pattern is the same. will this effect the car in any way?

rgds ilan

[Alfadog]

They might not fit... or they might just look funny...

read : http://en.wikipedia.org/wiki/Wheel_sizing for a better explanation :)

As for legalities, I believe you can't increase the track width over a certain amount, worth checking out your own State's laws.

[StanTheMan]

he'll actually be decreasing it. but its the same principle.

NSW is 25mm total. so 12.5mm each side
in this case its 13mm each side......you could do a lot worse. there is blokes with 15mm offset running around on this forum where the standard is 45mm :lol:

Theoretically by decreasing your track width you are also increasing the height of your centre of gravety. but with a Type R.....i doubt it will make much of a difference.

And like alfadog has said....the rim face will be moved further inward to the car so you need to have a look to see if its going to hit anything.....it would defenatly look somewhat out of place

[Alfadog]

BTW is the actual rim the same width ? That'll make a difference too. Kinda stating the obvious but . . .

[IcemaN]

they would be my track rims so no problems legality wise there.
they are 16x6.5 i currently have 15x6 i think it is. soz im noob thats why im asking:)

[A'PEXi]

the wheels will sit inside the guards a little more and you will have about 20mm less clearance between the wheel / suspension

[IcemaN]

theres plenty of clearance from the rotors i checked. didnt check the suspention part. we didnt notice anything. will have to chek it out again.
thanks for the help so far guys.

[VTECMACHINE]

errrrmmm... I with you IcemaN, I have no idea when it comes to offsets and ladi da. As much as I read stuff I never understand it. It's like Math at uni all over again. LOL!! I might have to ask Justin to explain to me in person when I next bump into him.

StanTheMan I totally lost what you said... Sorrryyy... we are retards.

[StanTheMan]

http://www.1010tires.com/images/WheelOffset.jpg

this is offset.
standard offset on a integra typeR is 42mm
new rimms will have an offset of 55mm

offset distance has increased by 13mm ( total of 55mm)

so now the halfway point (width) of the wheels will be 13mmfurther away (Than standard) from the part that bolts onto the hub.....that orange bit.r.

how to measure track width.
track with is the distance from the halfway piont of the rim (witdth) across to the other rim.

because you've changed the offset.....you've also changed the track width. in this case you've actually decrease the witdth of your track.

is that making sense?

The current JDM look is the opposite......inreasing your track (decreasing your offset). great for drifting.
so when standard offset is 45mm you change the rim to something like 15mm offset. you've now increased you track width by 30mm per side.
which is total track witdth increase of 60mm.
in NSW without a ingineering certificate....legaly ...is 25mm total.

I hope i've made a little more sense this time around.

otherwise...can someone else have a go.

no one is stupid. it took me a little time to get my head around it.

[StanTheMan]

But as far as using the incorrect offset is concerned for racing......it doesn't matter. Also like a few people have mentioned. Total width of the wheel will affect wheel fitment more than 13mm change in offset.

when it comes to changing track width too much on the road......well.....I'm sure if the boys in blue really started looking real hard they could defect most of us for one thing or another. & if the defected you for increasing the track width by 1 mm mre than whats legally allowed.....they'd have to be pretty desperate to get you.



VTECMACHINE...i hope i've made a little more sense this time :D

[VTECMACHINE]

Made a little more sense! Thanks heaps. Only thing I don't understand is if you increase the offset, wouldn't you Increase the track width, not decrease it? That part doesn't make sense to me. Sorrryyy....

[black200]

the lower the number, the bigger increase in track. i've come from a 7" wide +50, to a 8" wide +35

now if only i had photos to show you guys the comparrison.....

Rays have a reccomended size and offset for wheels for each car. Track down a copy of that and see what they think!

[xero]

here's another example:

i have 13x5.5 +35 offset (positive 35) standard wheels on my ae86...

im looking for 15x7 +0 offset... these will fill the guards prefectly, as normally the tyres sit about 2 inches inside from the edge of the guards...

these would sit inside your guards more... not exactly what you want... if you must keep them then i reccomend getting some spacers and fit them when you have these wheels on so they sit closer to your guards thus increasing you track and grip...

feel free to poke holes...

[IcemaN]

stan the man thanks heaps!!! i understand now. so i should get 13mm spacers and il be good to go? for tracking i deffinatly dont want to decrease track width.

[VTECMACHINE]

Aren't spacers bad for track? The bolt on ones are ok right???

Ok I 99% get it. Just have to do a bit more reading and i'll have it 110%. Thanks for that boys.

[StanTheMan]

bolt on spacers are fine for track work.
Illegal on the road unless fitted to the car by the factory.

thats if you really care. :wink:

[Brian_J]

spacers are bad full stop! equivalent to breast implants on a girl..hold on...thats not neccesarily bad...ok they are equivalent to stuffing tissues in their bra

[VTECMACHINE]

hehe brian.

ok cool thanks.

[IcemaN]

once again thanks heaps for the info guys. so now we have one for an one against spacers. im going to be using these on the track, only if everythings ok and i feel safe using them. spacer prob is now on my mind lets solve it. more opinions please:)

[Sp33dY]

Ive seen cars with spacers have nuts bust on em first hand. A merc in the middle of Melbs CBD with the front right disc mashed on the ground is NOT a pretty sight! I hate to think how much worse it would of been at speed in a track scenario where the car woudl of been pushed to the limit.

I was told that Spacers i used to be able to be engineered if they were WELDED to the hub, and were of high quality, nowaways they dislike them immensely. Personally, id NEVER put spacers on my car .... especially a track car. Im sure a few people on this forum run spacers and havent had any issues .... a lot would depend on the material composite theyre made out of and the quality.

[StanTheMan]

well i stand corrected ..... since this is a Democracy mojorety opinion rules. I've personally never used them .i have seen spacers used on MX5's in production sports..... In fact I believe at least 2 MX5 mania cars are running them . No problem as yet.

but interesting discussion.

[VTECMACHINE]

hmmm... this is a great thread. lol. Learning quite alot here. After what speedy said, I would love to get another set of rims for track, so I don't have to run spacers with my stock rims. But if MX5manialand is running them. I may have to give them a go. All I know is Indy from IS motor racing is highly against them. And now I am understanding the whole wheel, offset, hub, spacing ladi dadi stuff, I am understanding why it isn't the best to run spacers.

[Sp33dY]

All I know is Indy from IS motor racing is highly against them.

Enuf said ........ i dont think u'll find a better recommendation!

[StanTheMan]

all in all .....no doubt its better to run a wheel with the apropriate offset as opposed to getting any wheel & then compromising it with a spacer.