Technical standard sei offset
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Technical standard sei offset
I thought it was 27 but 1/2mm isn't going to make mutch differance, remember thats on a 5.5J wheel if you are using it for referance on fitting different wheels, ET (off-set) changes with width.
Its worth noting that on the 14" Abarth wheels Fiat went for an ET of 36 with 10mm spacers at front only, so fronts have ET26, this was to ensure no fouling of bodywork or suspension. So if going aftermarket keep that in mind, I run Compomotive MO's in 14" 6J wide ET35 with 8mm spacers at front only.
Aaron.
Its worth noting that on the 14" Abarth wheels Fiat went for an ET of 36 with 10mm spacers at front only, so fronts have ET26, this was to ensure no fouling of bodywork or suspension. So if going aftermarket keep that in mind, I run Compomotive MO's in 14" 6J wide ET35 with 8mm spacers at front only.
Aaron.
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Front offset is 27.5 but it appears as 30.5 due to the small spacer which is present.
Liam
Liam
No, if you take of a front wheel from a Sei or Cinq with standard rims you will see under some crap likely a 3mm thick metal spacer which is behind the wheel locating pin and other 12mm nut.
I assume this was an after thought by Fiat.
Seicento Abarth rims need further extending but you just remove the 3mm and fit a 10mm like this I mean
Abarth Rim 36ET - Standard ET 30.5 so 5.5 out but if you remove the standard spacer you get a 27.5 ET, fit the Fiat Abarth spacer and you get 37.5 really but it suits the wheel better, as if you fit without the proper spacer you lose track at the front, it's like removing the standard spacer and running the standard wheels again meaning they wheel are closer together which is detrimental to the handling.
It may sound like it doesn't make any real difference but if it didn't Fiat wouldn't fit them.
Liam
I assume this was an after thought by Fiat.
Seicento Abarth rims need further extending but you just remove the 3mm and fit a 10mm like this I mean
Abarth Rim 36ET - Standard ET 30.5 so 5.5 out but if you remove the standard spacer you get a 27.5 ET, fit the Fiat Abarth spacer and you get 37.5 really but it suits the wheel better, as if you fit without the proper spacer you lose track at the front, it's like removing the standard spacer and running the standard wheels again meaning they wheel are closer together which is detrimental to the handling.
It may sound like it doesn't make any real difference but if it didn't Fiat wouldn't fit them.
Liam
You sure, allanhelen on here thought he didn't have any but just didn't look too hard, they ain't obvious really on some cars with the dirt and crap, if you don't have them then how do you fit the wheels without great difficulty and what holds your brake discs in place?
I found when one side of my bolts sheared the disc was allowed to move about causing unnecessary brake wear and possibly uneven braking.
Heres a pic of what I am on about.
Liam
I found when one side of my bolts sheared the disc was allowed to move about causing unnecessary brake wear and possibly uneven braking.
Heres a pic of what I am on about.
Liam
Attachments
You got the bolts but not the spacers then?
Liam
Liam
Liam said:
Thats on Cinqs, I beleive Sei have ET27 all round no spacers, should be stamped on the wheel.
But yeah Cinqs have ET30.5 + 3mm spacers front only so front = ET27.5.
Liam said:
You've got that back to front, add a spacer decrease off-set, i.e. ET27.5 + 10mm spacer new ET=17.5.
HTH
Aaron.
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The spacer appears on the EPR for the Sei as well, I am almost positive that Sei standard Sporting rims are the same specs are Cinq ones.
How does the ET thing work then, do you not match ET of the wheel to the car? So why does a ET36 wheel go on what is a ET17.5 hub?
Liam
How does the ET thing work then, do you not match ET of the wheel to the car? So why does a ET36 wheel go on what is a ET17.5 hub?
Liam
Liam said:
Pretty good guide here.
But basically, no. ET is only a meaningful reference given the same rim width (and, in terms of fitting) wheel diameter. Hubs have no reference ET and you might find that a Delta Integrale and an Alfa 155 use the same (front) hubs. It's unlikely that all the wheels fitted to the former would fit the latter (at least, with tyres fitted).
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Liam said:
Cool, I think i just read somewhere that Sei 13" wheels were ET27, tho i've never seen them.
ET(off-set) is on most cars -ve so if you add a spacer you subtract that from the wheels offset to get new offset. So Sei Abarth has ET36 wheels but 10mm spacer at front, so front is ET26, or Cinq has ET30.5 and 3mm spacer at front so ET27.5, or most extreme was my Strada Abarth rims were ET60 so i added 30mm spacers to achieve ET30
Aaron.
fingers99 said:
And thats where the Counterbore comes in if Im interpreting this info correctly (C.Bore being equivalent to the diameter of the part that goes through the brake disc and the wheel seats onto)
Well, counterbore will come in somewhere, but it wasn't what I meant, and most/many fiat/alfa/lancias come with the same counterbore. My Sei runs with Alfa 146 alloys and 155 spacers.
My example wasn't too good in so far as Alfa actually made a 155 with the Integrale running gear (rarer than the "real" thing, so I have an excuse for forgetting).
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Sorry for dragging this old thread up, but if I understand what's been said. I have 6.5Jx15 ET35 wheels, to get the same inside clearance as Fiat have for the Abarth alloys I would need a 15mm spacer per side?
Not quite, but nearly. Blue has 35ET Compomotives with 195/45/14s but the Compos are 6J. Uses 8mm at the front, no spacers at the back, stud conversion. My advice is to try the wheel tyre combination at the back with no spacers on full bounce (remove one spring) and check for clearance. I think you may need spacers at the back, but not that big.
1/2 of 1/2 inch is 6. So you're not far out for the fronts, but the difference in spacered out ETs front and back is deliberate: it helps turn in.
