Im looking at putting a new set of alloys on the Zed soon. The fitments available are:

 

8 x 18 or 10 x 18.

 

Will i be able to get 10 x 18 all round? Or will have to get the smaller fitment at the front.... Im also looking to lower the car at the same time by approx 30-40mm all round.

 

Cheerz

why do you want 10x18 on the front?

you should be able to lower the car with blitz springs as that is there spec 15-25 int he fornt

25-40 at the rear.

 

 

Will 8 x 18 on the front be in line with the arch ?? Also will 10 x18 on the rear touch the arches?

 

Cheerz

I think 10X18 at the front will lead to problems with clearance as well as destroying the cars handling. With wheels and tyres that wide at the front you will encounter serious tramlining as well as a lot of understeer when cornering, even the Lamborghini Diablo only has 9X18s at the front!

OFFSET

 

“The offset of a wheel is the measurement the wheel is offset from the centre line of the overall width of the wheel.”

 

A wheel which sits further under the wheel arch with a small outer rim is normally a negative offset as per Diagram A below, and shown as 'ET' offset. A wheel which sits further out and has either a larger outer rim or a small outer rim and a large block which takes the hub mounting face beyond the centre line is normally a positive offset and shown as an 'ET' offset.

 

An example - MO 6x15 (MO1560 ET49) has a negative offset and has a flat outer rim and the MS (MS1380 ET-06) has a positive offset with a dished front face and a large outer rim.

 

To work out the offset the wheel must be measured accurately using the following steps and using Diagram A:

 

 

 

DIAGRAM A

 

 

Measure the overall width of the wheel - (ii)

Measure the ‘T’ dimension, which is the measurement from the back of the bolt up face to the outside of the inner rim - (i)

Divide the overall width by two which gives you the centre line.

Minus the ‘T’ dimension from the centre line.

A negative answer the wheel would be ET.

A positive answer the wheel would be ET–.

An example - AT (AT1355) with an offset of ET35 has an overall width of 159.7mm. Therefore the centreline would be 79.85mm and the ‘T’ dimension should be 114.85mm.

So 114.85 - 79.85 = 35mm.

 

PCD

 

“The Pitch Circle Diameter is the diameter of the circumference of the centre line of the drilling holes.”

 

DIAGRAM B

 

 

This can be four, five or six lug and can be measured as shown in Diagram B. The easiest way of measuring four or six lug wheels is to take two diagonal holes and measure from the outer edge of one hole to the inner edge of the second hole.

 

With five lug wheels this is not possible as there is not two diagonal holes, therefore the simplified way would be to measure the outer circumference and inner circumference of the drilling holes. The difference should be divided by two added onto the smaller circumference or deduced from the larger circumference.

 

Compomotive do manufacture 8 hole multifitment wheels therefore it is essential when fitting these wheels that the correct PCD is selected.

CENTRE BORE

 

 

“The centre bore is the location hole machined in the centre of the wheel.”

 

This varies from one vehicle to another. It is essential, the wheels purchased have the correct centre bore for the vehicle they are to suit, otherwise you may experience balancing problems. Compomotive do manufacture wheels which are universal fitting and are drilled to fit a variety of vehicles. Therefore to obtain the correct fit for the vehicle the correct spigot rings must be inserted into the rear of the wheel (iii).

 

 

hope this helps in your quest.

 

[This message has been edited by 300z (edited 15-12-2001).]

I'll ask for a translation when im not so mashed!!!!!

 

S

Go for 8,1/2" on the front,and 10" on the rear,Best to keep the rear wider than the front,as it will handle superb .

 

------------------

Done,

 

I think that 8x18 on the front and 10x18 on rear is what ill go for.

 

Now for tyre sizes????????????????????

235X40 ZR 18s front and 265X35 ZR18 rear

I have 225/40 on the front and 265/35 on the rear and it handles like Maradona

 

 

------------------

Glen

:)

CheerZ guys

 

can u confirm is you have 18x8 (front) and 18x10 on the back

 

Also, how much is the car lowered by?

 

 

I had 8.5x18 on the front an 10x18 on the rear with 245/40 on the front and 265/35 on the rear.

 

I had a very slight rub on the inner wheel arch on full lock.

 

If you have these wheel & tyre sizes then go for a tyre with a decent sidewall protector. Bridgestone SO2s were fine but when I had Pirelli P Zeros on there they didn't protect the rim at all and (bring crap at parking) I dinged the rims a few times.

 

Check out pics of the car on www.davehairs.freeserve.co.uk

 

The most important factor is offset (as per Warren's post).

 

Dave

Can anyone identify these (as previously posted in the war-zone thread):

http://www.300zx.co.uk/rides/senna/trax_-_skyline_r34_special.jpg

 

They are some seriously nice wheels!

 

Regards

 

 

------------------

Simon

 

[This message has been edited by WillyEd (edited 17-12-2001).]