Bob scara Posted July 1, 2018 Posted July 1, 2018 Hi guys, need advice really, I bought a set of 5x112 wheels for my b8 , problem came when I went to fit them and realised the centre bore of the wheel was too small for the hub on the car, the cars hub is 66.6 and the centre of the wheel is 57.1, I have seen that wheels can be machined to 66.6 but was wondering if anyone knew of any sort of spacer adapter that bolted on which would do this also meaning I don’t have to have the wheels machined out? Any help of opinions would be massively appreciated thanks.
Magnet Posted July 1, 2018 Posted July 1, 2018 Hello Roberto, Sorry to hear of your problem with these wheels. Apologies for being pessimistic, but I think realistic. The truth is that these wheels were not designed to fit your model, so they are non standard, and as such you would need to notify your insurerers that (if they were made to fit) that the car was now fitted with non standard road wheels - otherwise your insurance could be adversely affected if you claimed, or someone claims against you. On the question of trying to make them fit:- If I had the facility to accurately remove approx. 10mm from the centre bore of these wheels, would I? Most definitely not, since it would have an adverse affect in the structural strength of the wheel. Would I add spacers to these? Again, no I wouldn't , since the the then running centre line of the wheel will be different from that designed-in when the hub bearing position was calculated. As I said, this is all very pessimistic, but I fear it would not be wise to do anything to make these wheels fit - as appealing as they may be to you. If I was in your situation, I would be selling these on and buying wheels which were optional available designs when the model was built. If you stick with this, they should fit and they should not have any adverse insurance implications. Kind regards, Gareth.
Bob scara Posted July 1, 2018 Author Posted July 1, 2018 Thanks for the comment Gareth, these wheels are standard Audi wheels just off an older model with a different centre bore size , there are companies that offer this boring service but as you said I was a bit unsure of the implications. I think I will end up selling the wheels and buying the correct ones instead, here is a picture of the wheels
niedzial1983 Posted July 1, 2018 Posted July 1, 2018 You can get a centralising ring going from bigger to smaller size but for you i would get it to a specialist to machine the centre bore to fit
Magnet Posted July 1, 2018 Posted July 1, 2018 Hello Piotr, '...I would get these to a specialist to - machine the centre bore to fit.' Sorry to contradict, but I'm not sure how you can safely recommend this course of action to Roberto when you don't know ( OK, I'm assuming you don't know) how much remaining metal there will be left after they are bored out. OK, this may not be a true guide, but have a look at how close the centre Audi cover is to the wheel nut holes. These may be Audi wheels, but they were obviously not designed to fit this model. Pretty they may be, but.... Kind regards, Gareth.
niedzial1983 Posted July 1, 2018 Posted July 1, 2018 1 hour ago, Magnet said: Hello Piotr, '...I would get these to a specialist to - machine the centre bore to fit.' Sorry to contradict, but I'm not sure how you can safely recommend this course of action to Roberto when you don't know ( OK, I'm assuming you don't know) how much remaining metal there will be left after they are bored out. OK, this may not be a true guide, but have a look at how close the centre Audi cover is to the wheel nut holes. These may be Audi wheels, but they were obviously not designed to fit this model. Pretty they may be, but.... Kind regards, Gareth. What do you mean safe ? Same as machining the outside of the wheel when repering crubmarks etc , same process , taking off the material off the face of the wheel . People do this more comon than you think
niedzial1983 Posted July 1, 2018 Posted July 1, 2018 Also the only reason for using addapters/spacers would be if the offet/et is not correct
Bob scara Posted July 1, 2018 Author Posted July 1, 2018 I thought they could reduce hub bore down with a spacer made on a cnc machine
niedzial1983 Posted July 1, 2018 Posted July 1, 2018 13 minutes ago, Bob scara said: I thought they could reduce hub bore down with a spacer made on a cnc machine Yep . Reduce yes. But to make it wider you need to make yours bigger 🙂
Magnet Posted July 2, 2018 Posted July 2, 2018 Thanks for the photos Piotr, but it wasn't the actual machining process which concerned me, it's the wisdom of considering removing almost 10mm from the centre bore of these particular wheels. My personal opinion (and of course it's just that) is that I would not consider it in this case, if that amount of metal has to be removed. I repeat my apologies, for disagreeing with you, and obviously Roberto can decide on his safest course of action. Kind regards, Gareth.
Bob scara Posted July 2, 2018 Author Posted July 2, 2018 Had them machined this morning, workshop said perfectly safe, took about 1:30 great job from the guys at T.T. tools Chelmsford 1
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