PCD and Hub size

reynolds_p1 · Post by **reynolds_p1** » Thu Aug 18, 2005 6:21 pm

Can anybody please tell me what size PCD i need to fit my 480 (its a '92 if that make a difference) and also what hub size. Also is the offset 45?

cheers!!

Adam

please could someone of a modereratory nature move this to the correct section for me.. whoops. Ta!

Ally · Post by **Ally** » Thu Aug 18, 2005 6:53 pm

I found this on a website selling alloys a while back - I think it's right...

Volvo 480 Wheel Fitments

PCD 4x100mm
Bore 52.1mm
OEM 14x5.5e40 & 15x6.0e40

14x6.0 e38 175/65R14
15x6.5 e38 195/55R15
15x7.0 e35 195/55R15
16x7.0 e38 205/45R16
16x7.5 e37 205/45R16
17x7.0 e38 205/40R17
17x7.5 e37 205/40R17

vins480t · Post by **vins480t** » Thu Aug 18, 2005 9:16 pm

nice 1
shows allot of possible sizes
225 45 17 fits the rear on a 7,5 ET36 R17

Jamo · Post by **Jamo** » Tue Aug 23, 2005 11:01 am

Ally wrote:I found this on a website selling alloys a while back - I think it's right...

Volvo 480 Wheel Fitments

PCD 4x100mm
Bore 52.1mm
OEM 14x5.5e40 & 15x6.0e40

14x6.0 e38 175/65R14
15x6.5 e38 195/55R15
15x7.0 e35 195/55R15
16x7.0 e38 205/45R16
16x7.5 e37 205/45R16
17x7.0 e38 205/40R17
17x7.5 e37 205/40R17

Those offsets are too high for the 16 and 17 wheel you'd want 30-35 Et on them.

Trust me i know from my HT3's!

Ally · Post by **Ally** » Tue Aug 23, 2005 12:31 pm

Jamo (In another thread) wrote:Placing spacers reduces the offset rating moving the wheel away from the arms.

Not if you're starting with a positive offset. This would increase the offset.

Jamo (In another thread) wrote:This is why when you increase wheel size you should reduce offset and why the Taurus rims are ET33 and not ET37

Wheel diameter doesn't make any differnce to the required offset, that's more to do with having wider wheels. Granted most large diameter wheels are wider, but not all.

Can you explain further? What problems did you encounter? Reducing a positive offset would move the wheel deeper into the arch, and I thought some people had experience rubbing on the rear axel tie-rod. It's much easier to roll your arches than start attacking inner wings etc. with a big hammer. Logic tells me you want the centre line of the wheel in the same place, unless the tyre starts rubbing on something.

Hope this makes some sense, as the more I think about it the more confused I feel.

Ally · Post by **Ally** » Tue Aug 23, 2005 12:35 pm

Just found another link that maybe does a better job of explaining offset.

http://www.tyres-online.co.uk/techinfo/alloy.asp

Jamo · Post by **Jamo** » Wed Aug 24, 2005 2:45 pm

Ally wrote:
Jamo (In another thread) wrote:Placing spacers reduces the offset rating moving the wheel away from the arms.
Not if you're starting with a positive offset. This would increase the offset.
[Quote/]
Oh really go to your local wheel supplier and ask them.

Less offset = outwards

If the wheel had 0 offset the mounting face would be aligned to the centre of the wheel.

Any value ET## will bring the wheel inwards from this point.

Hence, if the number is smaller (33 instead of 38) the wheel will move outwards

http://s2central.net/wheels_tyres.html#Offset

Jamo (In another thread) wrote:This is why when you increase wheel size you should reduce offset and why the Taurus rims are ET33 and not ET37

Wheel diameter doesn't make any differnce to the required offset, that's more to do with having wider wheels. Granted most large diameter wheels are wider, but not all.

Wheel diameter has everything to do with offset!!

offset is taken from the centre line of a wheel, if the wheel is wider then there is more wheel either side of the centre line, meaning the wheel gets closer to the steering arms, reducing the offset moves the centre line of the wheel and there moves the wheel away from steering arms

480_rocket · Post by **480_rocket** » Wed Aug 24, 2005 2:58 pm

Wheel diameter has everything to do with offset!!

I can't see what differnece diameter makes, we're discussing the offset, inwards or outwards positioning of wheel. Diameter is on a different axis.

offset is taken from the centre line of a wheel, if the wheel is wider then there is more wheel either side of the centre line, meaning the wheel gets closer to the steering arms, reducing the offset moves the centre line of the wheel and there moves the wheel away from steering arms

Agreed with. One thing I haven't checked what usualy starts rubbing first, the wheel arch or the inside (steering components, fuel pipe, panhard?? etc)

Ally · Post by **Ally** » Wed Aug 24, 2005 3:21 pm

Jamo wrote:Wheel diameter has everything to do with offset!!

Wrong!

Wheel width has everything to do with offset!!!

chris1roll · Post by **chris1roll** » Wed Aug 24, 2005 5:07 pm

480_rocket wrote:
Wheel diameter has everything to do with offset!!
I can't see what differnece diameter makes, we're discussing the offset, inwards or outwards positioning of wheel. Diameter is on a different axis.

offset is taken from the centre line of a wheel, if the wheel is wider then there is more wheel either side of the centre line, meaning the wheel gets closer to the steering arms, reducing the offset moves the centre line of the wheel and there moves the wheel away from steering arms
Agreed with. One thing I haven't checked what usualy starts rubbing first, the wheel arch or the inside (steering components, fuel pipe, panhard?? etc)

Fuel filler pipe, inner and outer bodywork on the rear, and on the front you may find the tyre will rub the underseal off the inside of the wheel arch, on the box section when at full lock.

Ally · Post by **Ally** » Wed Sep 14, 2005 3:52 pm

OK, here it is. Public apology to Jamo regarding +ve and -ve offset:

I'm sorry Jamo, you were right, I was wrong.

(I still maintain that diameter has nothing to do with width and offset.)