Wheel Bolts

[Paulypaul]

I've just bought a set of 16" genuine alloy wheels for the van (privately and not through dealer) to replace the 15" steel wheels.

On searching the net it states that this particular wheel utilises the original wheel bolts. However, my question is whether the wheel bolts for a 15" steel differ from a 16" wheel or are they universal?

Thanks in advance for any help.

Paul

 

[andyman]

I doubt you can swap from 15 to 16.
Speedo will not read correct for starters.
Clearance on suspension may also be an issue.

Andy

 

[Howard H]

I doubt you can swap from 15 to 16.
Speedo will not read correct for starters.
Clearance on suspension may also be an issue.

Andy

Just the opposite (IMO ) Andy when I swapped15 to 16 inch wheels it made the speedo bang on according to gps ,it was miles out before . No offence meant ?

 

[Howard H]

I've just bought a set of 16" genuine alloy wheels for the van (privately and not through dealer) to replace the 15" steel wheels.

On searching the net it states that this particular wheel utilises the original wheel bolts. However, my question is whether the wheel bolts for a 15" steel differ from a 16" wheel or are they universal?

Thanks in advance for any help.

Paul

When I bought a set of alloys ( none standard ) they came with different bolts as the standard ones weren’t suitable for the alloys .

 

[Jev88]

Jaws - was asking for bolts recently and they do differ from alloy to steel and also from 15 to 16" wheels I think. Search for his thread and you may find th answer.
I know even ECP sell bolts but more likely down to you to work out which ones you need.

These guys know their stuff too....

CLICK HERE

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[Paulypaul]

Thanks for your replies. After doing some digging I've come to the conclusion that Fiat suggest that the wheel studs do not differ between steel or alloy. The difference apparently is the maxi and light chassis but the fact that the offset and pcd are the same for these particular wheels would indicate that they use the same bolt.

Torque settings is now the question?

Fiat dealers aren't much help are they?

 

[tonyidle]

Thanks for your replies. After doing some digging I've come to the conclusion that Fiat suggest that the wheel studs do not differ between steel or alloy. The difference apparently is the maxi and light chassis but the fact that the offset and pcd are the same for these particular wheels would indicate that they use the same bolt.

Torque settings is now the question?

Fiat dealers aren't much help are they?

Offset & PCD aren't an indicator of wheel bolt type. Look closely at the bolt seating of each type of wheel. Any difference will be obvious and will determine whether the existing bolts are compatible.

 

[Jev88]

Thanks for your replies. After doing some digging I've come to the conclusion that Fiat suggest that the wheel studs do not differ between steel or alloy. The difference apparently is the maxi and light chassis but the fact that the offset and pcd are the same for these particular wheels would indicate that they use the same bolt.

Torque settings is now the question?

Fiat dealers aren't much help are they?

Not sure that sounds right? The Maxi chassis using 16" wheels has to be PCD130 as opposed to the standard PCD118? Unless you have PCD118 15" wheels and have acquired PCD118 16" alloys now? Either way I was told Maxi chassis (if that is what you have) must use the beefier PCD130 wheels (ps 130 = 78mm bolt to bolt, 118 = 71.8mm bolt to bolt).

 

[tacr2man]

Some alloys use same nuts or bolts as steel , and not all alloys use same nuts or bolts as other alloys
safest answer is to visit dealer and look in parts book to see part numbers for the different options .

 

[Gellyneck]

Torque settings is now the question?
Fiat dealers aren't much help are they?

Funnily enough I had to get a puncture repair done yesterday in deepest darkest Orkney and the fitter asked if our AT \ Fiat manual gave the required torque setting for the wheel bolts (alloy). Neither does. So, contacted AT this morning and their response was "no idea as we buy the alloys on the chassis from Fiat, try them"!
Also now asked about alloy \ steel wheel bolts as the spare is the latter.
Wonder if I should get the chocolate fireguard option fitted?

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[tonyidle]

The Maxi chassis using 16" wheels has to be PCD130 as opposed to the standard PCD118?

That was true but later versions of the Ducato PCD is the same at 118mm.

 

[Lenny HB]

On 15" wheels steel are 160Nm Alloys 140Nm. On 16" wheels on maxi chassis steel 180Nm, alloys 160Nm.
I thought the bolts were 2mm longer for alloy wheels I also thought the bolts for 16" wheels were a larger diameter but that maybe because originally 16" wheels were only on the maxi chassis.

 

[Speve]

Just found this on another Forum.

It was quite easy to find out, I took a bolt out of my Link Removed with alloys, and a bolt out of my daughters X290 with steel rims and compared them side by side. Exactly the same. Both Maxi chassis with 16mm diameter bolts, and my alloys are the standard FIAT fitment.

 

[Speve]

This is specific to a a Hymer/ Goldschmidt alloy.
From Hymer info leaflet :

Alloy rim 16" Heavy Chassis
Make your HYMER stand out from the crowd with the new and HYMER-exclusive alloy rims which perfectly compliment the look of the HYMER motorhome fleet. They add a modern and sporty statement.
by Goldschmitt
Size: 6jx16
Offset depth: 68
Bolt circle: 5 X 130
Polished anthracite
for Fiat X 290 Heavy Chassis
Load-bearing capacity 1,350 kg
Original Fiat wheel bolts

 

[Sasbo]

Paul,

Can confirm alloys torque setting 160Nm.

Surprised yours has 15 inch wheels, is it on the light chassis?

Are the studs 19mm or 21mm head? Normally 19mm is for the light chassis and 21mm for the heavy (maxi) chassis.

The aftermarket 16 inch alloys I purchased for my G740 came with replacement studs as the ones for the fiat 16 inch steel wheels did not fit. Difference is in the shoulder profile.

Do you have the make/style of the alloys you have purchased?

Had to carry a set of five steel studs for the steel spare although luckily enough never had to use the spare.

Cheers
Richard

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[Jev88]

My 16" steel Maxi PCD130 wheels have a 24mm Stud.......

 

[tribalbrit]

Just be careful of the length. Some alloys use longer bolts than steel wheels.
I found this out to my cost when getting a puncture on my Crafter (work van)

 

[DaveandJen]

I looked into replacing our steel wheels for alloys a couple of years ago and noticed some suppliers required a change of bolts due to the angle of the tapered pieces that tighten up against the wheel.

 

[Paulypaul]

Paul,

Can confirm alloys torque setting 160Nm.

Surprised yours has 15 inch wheels, is it on the light chassis?

Are the studs 19mm or 21mm head? Normally 19mm is for the light chassis and 21mm for the heavy (maxi) chassis.

The aftermarket 16 inch alloys I purchased for my G740 came with replacement studs as the ones for the fiat 16 inch steel wheels did not fit. Difference is in the shoulder profile.

Do you have the make/style of the alloys you have purchased?

Had to carry a set of five steel studs for the steel spare although luckily enough never had to use the spare.

Cheers
Richard

Hi Richard,

Our Pilote came with 15" steels with 118 pcd. I have sourced a set of Fiat alloys that are 16" that have a pcd of 118. On that basis I assumed it was a light chassis and not a maxI which has a pcd of 130.

Fiat list 2 wheel bolts, 1 for the light chassis and 1 for the maxi chassis which apparently refer to steel and alloy wheels alike, or so the parts guy at Desira said.

I'm even more confused now as there seems to be many conflicting scenarios. The wheel bolts take a 21mm socket.
These are the wheels in question :

 

[Sasbo]

Paul, I've got 16 inch fiat alloys on my new Chausson 530, same style as yours and with the 21mm stud head.

I'll pull a stud off the Chausson wheels tomorrow and compare with a stud from the Pilote steel wheels to see if there is any difference.

Could be late tomorrow when I get back to you.

Cheers
Richard

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[Paulypaul]

Thank you Richard, that's really kind of you.

Thanks,

Paul

 

[TerryL]

Nobody seems to have mentioned a "problem" I encountered when I first fitted alloys. There was a metal locating peg on the wheel flange which fitted in a hole in the wheel centre, but no such hole in the alloys - supplied by a very reputable company well known for their excellent advice. This puzzled the tyre fitters at the time (I had new tyres fitted at the same time) as the wheel would not go back on properly, then the foreman fitter came across and told them to just unscrew the peg. I've run like this now for 8 years/90,000 miles with no problems.

I kept the pegs of course, together with one set of wheel bolts for the spare if I ever need to use it - those for the alloys are different.

 

[Sasbo]

Hi Paul,

Took a stud off the Fiat 16 inch alloys on my Chausson 530 and compared to the one from my old 740G steel wheels. Difference is clear in photo, stud from 740G steel wheel is thicker and longer.

So, I've taken measurements of the stud from the Chausson 530 (which is on the Ducato light chassis) 16 inch alloys which you can see these in the attached file and check against the studs you have.

Hope this helps.



Cheers
Richard

 

[Paulypaul]

Thank you so much Richard,

I'll take one of the studs off tomorrow and measure with a vernier. I've fitted the wheels and I had no obvious problem with regards to lining up the bolts and tightening etc, although the vans is just sat out on the drive and hasnt turned a wheel yet.

I'll update you in the morning.

Thanks once again, it's really appreciated.

Paul

 

[HandyAndy]

Be real careful swapping steels to alloys on vehicles without concrete evidence of what parts to use, the bolts can be a minefield on some makes.
Some have collars, some have different angle faces and of course its no good putting the same length steel bolt back in an alloy rim as the alloy rim will be thicker and the bolt may only be screwing in a few threads (I have personally seen this on a few oiks cars that have come through the door with some bling rims on it and only held on by about three threads)

and don't for gawd sake don't put too long a bolt in as the clearance behind the drive flange may be minimal and you risk stuffing the bolt into something important.

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[Reallyretired]

I also needed a separate set of studs for my steel spare wheel. Fortunately the independent mechanic who fitted the tyre told me I needed different ones otherwise I probably wouldn't have thought of it.

 

[Paulypaul]

These are the bolts I have:

And this is what I have found out this morning:
Fiat Ducato Peugeot Boxer Citroen Relay Wheel Bolts M14X1,5 (06-ON) 1363349080
5 New Wheel Bolts For Alloy Or Steel Wheels

Specifications
Length: 62mm
Outer thread: M14X1,5mm
Thread Length: 22mm
Quality/ Grade: 10.9
Spanner Size: 21mm
Fits Fiat Ducato, Peugeot Boxer And Citroen Relay Q12-Q15-Q17Light (2006-ON)

 

[Sasbo]

So yours and the ones for sale look to have the same measurements as the ones on my 16 inch alloys.

Only thing not confirmed is the shoulder profile (taper). I guess the best thing would be to buy the set of 5 that are for sale then physically check them against your existing wheel studs.

Upside is if they are the same as the ones you have then you have some spares!

 

[Paulypaul]

That's it Richard, the fact that you have what appears to be the same stud, 16" alloys and a light chassis, plus the fact that they are listed as being suitable for both steel and alloy, gives me a bit of reassurance.

Thanks again for your help.

 

[chippy63]

I've just bought a set of 16" genuine alloy wheels for the van (privately and not through dealer) to replace the 15" steel wheels.

On searching the net it states that this particular wheel utilises the original wheel bolts. However, my question is whether the wheel bolts for a 15" steel differ from a 16" wheel or are they universal?

Thanks in advance for any help.

Paul

Can i ask whee did you source the wheels from & at what cost?

Karl

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