 | Home > Wheels & Tyres > Wheel centre bore |
 
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| DaftOldGit Member Since: 20 Sep 2015 Location: London Posts: 52  
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I've just had 4 new steel wheels delivered with new tyres from a well known supplier.
The stud pattern seems fine, but the centre bore is about 10mm bigger than standard. This means that the weight of the vehicle is purely on the studs and not on the hub. The supplier reckons that all aftermarket steel wheels are like this and that they supply Craddocks etc, and they're completely fine. Am I right to be concerned? I'd like your opinions please! |
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7th Dec 2015 8:57am |
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).| shaggydog Member Since: 12 Aug 2012 Location: Kent Posts: 3347 
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take a pic and post it up?
Should be fine, my modulars don't put anything onto the center of the hub and is done on the studs and nuts alone and has been for years and years! Just remember to torque them up correctly and check them ever now and then as per regular maintenance. Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197 Self confessed mileage hunter  |
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7th Dec 2015 1:15pm |
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| Cuthbert Member Since: 26 Oct 2013 Location: Up North Posts: 1535 |
Interesting question from Daftoldgit and I look forward to a forum member with the relevant engineering qualifications enlightening us.
The physics behind attaching the wheel to the hub and the forces applied in usage should prove interesting. Certainly it makes life easier when attaching a wheel if the diameter of the centre hole is only slightly greater than the centre hub - as that can take the weight off the wheel whilst you get the studs aligned and nuts tightened. |
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7th Dec 2015 9:12pm |
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| DaftOldGit Member Since: 20 Sep 2015 Location: London Posts: 52
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Thank-you for your input. I can't take a picture as I've put the original LR wheels back on.
It seems that it is perfectly normal and thousands of us are driving on steel rims that don't locate on the hub and just rely on the wheel nuts self centring in their holes and the studs taking all the weight. That's not to say that it's right though. After doing a bit of google research, I've found that it's normal for aftermarket alloy wheels to be supplied with the appropriate "spiggot rings" to ensure that the wheel is perfectly centred on the hub, so I wonder why not with these steel wheels. |
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8th Dec 2015 7:44am |
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| rustyboxx Member Since: 08 Oct 2012 Location: Poole Posts: 548 
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The difference between steel wheels and alloys is the profile of the wheel nuts. Steel wheels generally have tapered nuts that centre the wheel and effectively hold it captive on the studs. Therefore, the bore size isn't so critical.
However, this isn't the case with alloy wheels as the wheel nuts are not tapered. Whilst the nuts hold the wheel to the hub, it is the bore that usually fits tightly around the hub collar and centres the wheel on the hub. In the case of some Zu alloys I once had, the bore was slightly larger than the hub collar and it was an evil job eliminating wheel wobble despite the wheels being perfectly balanced. Unfortunately, it was not possible to get spigots thin enough to pack out the gap. 2015 90 XS CSW TDCi - Beautiful 2007 110 XS DCPU - An itch that needed scratching 2005 90 Td5 XS CSW - Utterly brilliant 2001 Discovery 2 ES Auto - A phase I went through 1996 90 Tdi CSW - Uber reliable 1989 90 2.5 Petrol Hardtop - My first proper Landy 1985 Range Rover Vogue V8 -Troublesome |
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8th Dec 2015 10:12am |
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