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Wheel/tyre Offset Problem

Ryosuke Takahashi
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Ryosuke Takahashi Community Regular

Ryosuke Takahashi

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Hi

I have a 180sx with a 32 GTR rear end with brakes hub etc, the front is S14/15 5 stud hub conversion with z33 brembo caliper and disc.

Problem when selecting wheels I am clueless about which offset is right.

Im using 17x8 235 wide tyres with a spacer on the front hubs but the tyre is rubbing against the spring.Unsure about the offset all I know its from an r33 skyline.

:woot:

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scathing Grand Master

scathing

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Posted (edited)

The Z33 uses a +30 offset on their front rims, but I have seen people run wheels with a +15 over them. But then your problem isn't clearing the brakes, its clearing your springs.

Find out what offsets your current rims are, and how wide your spacer is. A 17x8 would be R33 GT-R wheels, right?

Its still going to be hard to give you advice. You've got hubs from 1 car, brakes from another, and wheels from a 3rd. Unless someone else has done this combo, giving you exact numbers will be difficult.

Edited by scathing
n15m0 Grand Master

n15m0

Posted
Posted
The Z33 uses a +30 offset on their front rims, but I have seen people run wheels with a +15 over them. But then your problem isn't clearing the brakes, its clearing your springs.

Find out what offsets your current rims are, and how wide your spacer is. A 17x8 would be R33 GT-R wheels, right?

Its still going to be hard to give you advice. You've got hubs from 1 car, brakes from another, and wheels from a 3rd. Unless someone else has done this combo, giving you exact numbers will be difficult.

Exactly. Hence I wouldn't give any advice at all as the only way to find out in ur case would be trial fitting as you have hubs, and brakes from 3 different cars front and rear. You will need to find out what offsets and widths would clear ur brakes and also ur suspension. Too many variables in ur case..

Ryosuke Takahashi Community Regular

Ryosuke Takahashi

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  • Author
Posted
The Z33 uses a +30 offset on their front rims, but I have seen people run wheels with a +15 over them. But then your problem isn't clearing the brakes, its clearing your springs.

Find out what offsets your current rims are, and how wide your spacer is. A 17x8 would be R33 GT-R wheels, right?

Its still going to be hard to give you advice. You've got hubs from 1 car, brakes from another, and wheels from a 3rd. Unless someone else has done this combo, giving you exact numbers will be difficult.

How would I be able to work out the offset of the rims?

I ll find out how wide the spacer is, I only needed spacers for the front, rears were fine.

I know the offset of the rims they fit s14/15 & r33 gtsts.

The rims I have now at the front they stick out the front guard and rub against the spring with the spacer on the hub.But when i take off the spacer it hits the brake caliper. :D

Will update this thread soon.

Basically Im not keen on using spacers for the front because before i just needed rims to move the car as my 4 stud rims couldnt fit and clear the bigger brakes. :)

scathing Grand Master

scathing

Posted
Posted
How would I be able to work out the offset of the rims?

I'd hope that it was engraved / embossed onto the back of the spokes of the rim, but I realise that's not always the case.

This is what an offset is - so with a ruler and some string you could technically measure it yourself. But since they measure in mm, and its quite cramped in there, there's a good chance you won't be 100% accurate anyway.

Beer Baron Grand Master

Beer Baron

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Posted

33 GTR rims are 17X9 no X8. they are 17X9 +30.

it sounds like you are going to have some problems. if your tyre is currently sticking outside the guard then you cant move any further out without wider guards. if it's currently hitting the spring you cant go any further in either (unless you can fit a narrower spring, ie replace stock sus for aftermarket coil-overs with the small OD springs). only solution I can see at the moment is try and get the guards flared slightly so you can got a little further out to cure your spring touching problem and perhaps looks at a narrower tyre?

Ryosuke Takahashi Community Regular

Ryosuke Takahashi

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Posted

Hey guys thanks for the replies.

The spacers I'm using at the front are 20mm.

I have to wait 'six weeks' for the car to come out of the panel beaters to find out the offset of the rims

Im 100% sure now its S14 5 stud hubs with z33 brake disc and brembo caliper.

My current set of wheels at the front without spacer it doesnt clear the caliper.Do anyone think only 18inch wheels would be able to clear the z33 brakes?

I've used before 18s from a 2jz supra it fitted fine on the front with the 20mm spacer and 225 tyres. Again Im guessing its the offset?

Beer Baron I think I have aftermarket shocks + springs, yeah I plan to try replacing the 235s at the front with 205/215 tyres.

Cheers :)

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