wheel sizes

I have a 1988 328 NON ABS and i am looking for new wheels,all i know is the bolt pattern 5x108 the rest i don,t know can you help with a complete Drawing or all other dimensions i need for ordering new wheels,
thank,s

 

If it’s the same as the 308 QV, the front is 7” wide and the rear is 8” wide and the offset is about 11mm

 

The exact 328 non-abs offsets are given in post #1 of this thread (they are "positive"offset values):

https://www.ferrarichat.com/forum/threads/modern-ferrari-wheel-offsets.8361/

 

I could use your take offs if they are in reasonable/repaintable condition.
Richard C

 

I've got a set in excellent condition I don't need

 

is there a diagram around with all the dimensions of the 1988 / 328 NON ABS wheel?

 

I was looking for one to get some 16" rear wheels cast but an exhaustive search came up blank. What other dimensions do you need as I am going to get measurements for the drawing soon.

 

I don't get it: you already have a set of 328 wheels. All you need to do is measure them.

 

I know i can do that but the are on the car so diagram would save me taking the of that,s all

 

If you have to do it anyway, could you take some measurements for me

 

Fair enough

 

I hope this helps you find some period tyres https://www.longstonetyres.co.uk/classic-car-tyres/ferrari/328.html

 

Do you have concave or convex wheels? 88 was a change over year.

Convex:
16x7, ET15.15 Front
16x8in ET15.45 Rear

Concave:
16x7 ET38mm Front
16x8 ET63.5mm Rear

Here is an old photo of my 328 with 575 front wheels all around (ignore the mess)

I still have the wheels/tires available for sale but havn't gotten around to listing them.

Car looked great and drove much better. From memory it was a 225 front/255 rear setup with correct sidewalls/size for the 328.

 

Hi Derek, what width 16" rear wheels are you planning on having produced ?

 

Hi Steve, interestingly in Post 1 of the thread you've linked to, the OP states :

"Ok here it is for future reference:
Pre ABS 328:
7in Front is 15.15
8in Rear is 15.45"

Whereas in Post 7 he states :

"308/328 PRE ABS: 7" with +11mm Front; 8" +11mm Rear
328 ABS: 7" with +38mm Front; 8" +63.5mm Rear

And in my recent thread on this topic :

https://ferrarichat.com/forum/threads/308-gtb-s-carb-i-and-qv-wheel-et-numbers-and-images-wanted.624756/

It seemed to be confirmed that the ET numbers of 11 (ish) are in fact correct :

"- Yes, the offsets for the 16" wheels were indeed 11.15 and 11.45 (up to, and including, the "série 1" 328s, but NOT the "série 2" 328s, which have a different suspension, and very different offsets)"

 

That was me...I was the OP.

We confirmed with a physical wheel it was ~15 for late concave 328s (early 88). See here
https://www.ferrarichat.com/forum/posts/137981899/

(also I am not a moderator anymore, so I can't go back and edit old posts any longer...I also realized I flipped the concave/convex name/specs above..sorry about that)

Here are photos:

 

So the 308 7 & 8 X 16" wheels have a different offset to the early 16" 328 items ?

 

Limited data tells me at least two variants of the original 328 concave wheel were both ~ET15 as listed above...they were the most common version circa '86-early '88. There were *many* variants made for different markets around the world. I have never seen most to get numbers off them. Nor have I ever seen an '85 spec wheel... Mind you, I have only ever held later 328 wheels (I had an 88.5)...the rest comes from photos of wheels over the years.

308 16'' wheels are quite rare...as you know far more common are the OEM 14s or TR 390. Back in the day, people would buy 328 wheels to swap out their TR390s as they were far more readily available and much cheaper then the OEM 16s. Old data states it was: 16x7 ET11.15 front and 16x8 ET11.45 rear. I don't have a photo confirming. I never did get numbers for 14s.

Mondials are their own beasts with very different numbers.

 

Yes, a small difference. When people say 308QV and non-abs 328 wheels are the "same offset", what they really mean is the difference in offsets is small enough that either can work on either chassis.

 

Hi guys, I'd like to contact a board member on here, but I can see no way to PM/DM or email them. Does this function need enabling on my account ? Or am I missing something simple ?

Edit : I see that by clicking on the user's name, it brings up a box with "Start a conversation", is this the method for sending a PM ?

 

Yes, it is.

 

Many thanks

 

I almost have enough interest to get some 16” wheels cast. They would be 7-8” front design and 8-9” rear. I think we can get away with one mould as the lips can be rolled or machined to give the different widths and the extra groove near the spokes can be machined. Price would be about £350 each plus shipping a any duties.