Steel wheel is 15'' so what size alloy... 16 or doesn't it matter anymore? (1 Viewer)

Nov 30, 2022
85
44
Funster No
92,704
MH
Autotrail Apache
Going back to my younger days regarding wheels and by god thats a few now, I was told if you had steel wheels and wanted to get alloys then you needed the next size up i.e 15in steel = 16in alloy..

With a motor home is this the same as Im wanting to get alloys for our Fiat Ducato MH instead of the steel wheel with hub cups but not 100% sure if its 15in or 16in alloys or does it really matter... 15's I keep the original newish tyres fitted or double the cost and have to fork put for tyres as well..
 
Apr 3, 2019
1,579
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Burstner Travel Van
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Few years now
Both should fit. I changed the 15” to 16” to my last van. If you go with 16” fiat alloys make sure you get the correct pcd.
 
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pappajohn

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Aug 26, 2007
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I don't see why you would need to go up a size.
A 15" is a 15" whether it steel, alloy or a lump of cheese.
If you were uprating your weight then, yes, up to 16" (if needed) and it would also make your Speedo less accurate than it will be now.
 
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Apr 3, 2019
1,579
2,880
UK
Funster No
59,597
MH
Burstner Travel Van
Exp
Few years now
I don't see why you would need to go up a size.
A 15" is a 15" whether it steel, alloy or a lump of cheese.
If you were uprating your weight then, yes, up to 16" (if needed) and it would also make your Speedo less accurate than it will be now.
My speedo was spot on with satnav and phone satnav app.
 
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OP
OP
S
Nov 30, 2022
85
44
Funster No
92,704
MH
Autotrail Apache
I don't see why you would need to go up a size.
A 15" is a 15" whether it steel, alloy or a lump of cheese.
If you were uprating your weight then, yes, up to 16" (if needed) and it would also make your Speedo less accurate than it will be now.
There was that thou about getting the extra weight - that wouldn't be just yet as we havent had it that long...

Many thanks for the info, all is much appreciated 👍
 
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