Challenge wheel offsets

I have a set in the back of my truck right now I will measure later today

 

60mm front and 80mm rear

 

I don't know how folks remember stuff I forget how to tie my shoes LOL

 

Mine have 10 mm less, like 50 and 70

 

Here is my chart. I found the wheels to correlate to my chart. I have a set on my Challenge car and have owned 9 sets. They all have been identical.
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I just measured min

Sherpa23 chart is correct for the 355 challenge wheels

 

I just measured min

Sherpa23 chart is correct for the 355 challenge wheels

 

Here is my chart. Will add the F355 Challenge wheels. Looks like you have a few I do not and vice-versa.


Ferrari OEM Wheel Sizes


5 X 114.3 mm Bolt Pattern

612

Five Spoke F 18”, R 19”, 5 X 114.3 mm
Front 8J X 18 ET 43.5 mm , R 10J X 19 ET 51.1 mm
Five Spoke Modulars 19”, 5 X 114.3 mm
Front 8J X 19 ET 43.5 mm, Rear 10J X 19 ET 51.1 mm
Challenge Monolithic 20”, 5 X 114.3 mm
Front 8J X 20 ET 43.5 mm, Rear 10J X 20 ET 51.1 mm

599/HGTE/SA Aperta

Five Spoke F 19”, R 20”, 5 X 114.3 mm
Front 8J X 19 ET 43.5 mm, Rear 11J X 20 ET 63.8 mm
Challenge Monolithic 20”, 5 X 114.3 mm
Front 8J X 20 ET 43.5 mm, Rear 11J X 20 ET 63.8 mm
HGTE/SA Aperta Five Spoke 20”, 5 X 114.3 mm
Front 8.5J X 20 ET 40 mm, Rear 11J X 20 ET 63.8 mm

599 GTO

Five V/Ten Spoke 20”, 5 X 114.3 mm
Front 9.5J x 20” ET 38 mm, Rear 11.5J x 20” ET 63 mm

California

Pentagram Forged 19”, 5 X 114.3 mm.
Front 8J X 19 ET 44 mm, Rear 10J X 19 ET 52.5 mm
V Spoke Forged 20”, 5 X 114.3 mm
Front 8J X 20 ET 44 mm, Rear 10J X 20 ET 52.5 mm

458

Five/Ten Spoke 20”, 5 X 114.3 mm
Front 8.5J X 20 ET 46.5mm, Rear 10.5J X 20 ET 58.5 mm

458 Speciale

Five Spoke 20”, 5 X 114.3 mm
Front 9J X 20 ET 44.7 mm, Rear 11J X 20 ET 48.4 mm

FF

Five Spoke 20”, 5 X 114.3 mm
Front 8.5J X 20 ET 46.5, Rear 10.5J X 20 ET 53.4 mm

F12

Five/Ten Spoke 20”, 5 X 114.3 mm
Front 9.5J X 20 ET 48.4 mm, Rear 11.5J X 20 ET 71.6 mm

488

Five/Ten Spoke 20”, 5 X 114.3 mm
Front 9J X 20 ET TBD, Rear 11J X 20 ET TBD




5 X 108 mm Bolt Pattern

Testarossa

Five Spoke 16”, 5 X 108 mm
Front 8J x 16 ET 34.2 mm, Rear 10J x 16 ET 59.6 mm

512 TR/F512M

Five Spoke 18”, 5 X 108 mm
Front 8J x 18 ET 46 mm, Rear 10.5J X 18 ET 81.75 mm

348

Five Spoke 17” Early, 5 X 108 mm
Front 7.5J X 17 ET 49 mm, Rear 9J X 17 ET 68 mm
Five Spoke 17” Late, 5 X 108 mm
Front 7.5J X 17 ET 49 mm, Rear 9J X 17 ET 43.05 mm

355

Five Spoke 18”, 5 X 108 mm
Front 7.5J X 18 ET 32 mm, Rear 10J X 18 ET 77.9 mm

456 GT/456M

Five Spoke 17”, 5 X 108 mm
Front 8.5J X 17 ET 50 mm, Rear 10J X 17 ET 24.6mm

360

Five Spoke and Modular 18”, 5 X 108 mm
Front 7.5J X 18 ET 31.5 mm, Rear 10J X 18 ET 38.95 mm

360 Challenge

Challenge Monolithic 18”, 5 X 108 mm
Front 8J X 18 ET 31.5 mm, Rear 10.5J X 18 ET 39.95 mm

360 Challenge Stradale

Challenge Monolithic 19”, 5 X 108 mm
Front 7.5J X 19 ET 31.5 mm, Rear 10J X 19 ET 39 mm

550/575M/Superamerica

550/575M Five Spoke/Modular 18”, 5 X 108 mm
Front 8.5J X 18 ET 43.65 mm, Rear 10.5J X 18 ET 32 mm
575M/575 Superamerica Five Spoke Modular 19”, 5 X 108 mm
Front 8.5J X 19 ET 43.6 mm, Rear 10.5J X 19 ET 32 mm

F430

Five (Ten) Spoke, Challenge Monolithic, Scuderia Style 19”, 5 X 108 mm
Front 7.5J X 19 ET 31.5 mm, Rear 10J X 19 ET 39 mm

F430 Challenge

Challenge Monolithic, Center Lock
Front 8J X 19 H2 Center Lock, Rear 10.5J X 19 H2 Center Lock

Scuderia/16M

10 Spoke, Five Spoke 19”, 5 X 108 mm
Front 8J X 19 ET 31.5 mm, Rear 10J X 19 ET 39 mm

 

Thanks, Terry. I have a lot of those in another chart but this has some new ones. Thanks.

 

But these exist as well:
http://www.ferrarichat.com/forum/348-355-sponsored-bradan/506358-355-speedline-challenge-wheels-strange-offset.html
So there are 2 different versions.

 

what do you think about this:
Normal 355 front rim is 7.5 J with offset 32. Challenge is 8J and offset 60
What is the effect:
Challenge rim is 0.5inch wider, with half that coming to the outside (so only 6mm wider track each side/ more facing outwards.)
But the offset difference is 60-32 = 28 mm, making the track 28 mm smaller on each side (wheel more away from wheelarch/fender).
So each Challenge wheel in total is 28-6 = 22 mm more facing inwards, away from the wheelarch.

That does not sound right, does it?

I know that you can use a 2cm wider front tire , gaining 1 cm to the outside, but still the challenge wheel would stand 1 cm away from the fender compared to the normal wheel.

 

Yeah some odd sizes floating around I think they were originally made for other models

I know speedline made an 11 wide also in limited numbers. Had a set offered to me at a crazy price

 

Could it be that early cars have a different hub than later cars?
My 95 wheels have a lower offset than most challenge wheels it seems. So maybe the early cars needed a lower offset, and the car you are referring to is also an early one?
And yours a later one?