Steel wheel size in 'ET' not sure what this is

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Wed 22 Jul 2020 13:30
Steel wheel size in 'ET' not sure what this is - Theflyingpostman

Hello, can someone please help me, I have a Punto 1.9JTD HGT 2003 which it had 15 inch alloy wheels but I noticed a hair line cracked on one of my alloy it must be the potholes it damaged, I want to change all into steel wheel, the size that I required is 15 inch with 6.0j x ET33 with PCD of 98mm x 4 stud but they don't sell with ET33 but only ET35. Would this fit with no problem and I don't really understand what ET is mean? is something do with width of center hub?

Thanks

Fab

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Wed 22 Jul 2020 13:49
Steel wheel size in 'ET' not sure what this is - Brit_in_Germany

ET is from the German "Einpresstiefe" or in English "offset", see

https://en.wikipedia.org/wiki/Wheel_sizing#Offset

It is the distance between the wheel mating surface and the centre of the wheel in mm. I think from the figures given it means the wheel will stick out 2 mm more than the spec. Generally I don't think this would cause a problem unless the wheel arch clearance is very low.

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Wed 22 Jul 2020 13:55
Steel wheel size in 'ET' not sure what this is - Theflyingpostman

Thanks for your reply.

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Wed 22 Jul 2020 14:25
Steel wheel size in 'ET' not sure what this is - bathtub tom

You also need to check the CB (Centre Bore) diameter. A wheel with a smaller centre bore won't fit.

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Wed 22 Jul 2020 14:33
Steel wheel size in 'ET' not sure what this is - Brit_in_Germany

Sorry - I got it the wrong way round. 35 mm instead of 33 will mean the wheel will be 2 mm too far into the wheel housing. Most relevant for the front wheels probably but 2 mm is not much.

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Wed 22 Jul 2020 16:56
Steel wheel size in 'ET' not sure what this is - Theflyingpostman

Thank you and mentioned me the bore size.

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Wed 22 Jul 2020 17:25
Steel wheel size in 'ET' not sure what this is - gordonbennet

Yes bore size is very important, some aftemarket alloys are made with a typical spigot size for the mopst common fitments and they supply adaptor rings so the spigot is a snug fit on the hub for smaller hubs, if you ever have these types of wheels with adaptors be most careful when removing a wheel that the ring doesn't fall off and get lost, without the correct rings you will not get the wheel central on the hub and an eccentric wheel is not a pleasant experience.

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