I always thought they should do and that aftermarket alloys were supplied with spigot rings to ensure a tight fit between the wheels and hub. Am i right or wrong? What will happen if i fit wheels that arent tight on the hubs? [sp] Edited by: 1990
Its my porsche wheels adaptors, i expected them to be a tight fit onto the hub but they are a bit loose. I thought that if they werent tight onto the hub the bolts would be taking all the shock from the road rather then it being transfered onto the suspesion via the hub.
what he means is, should they centre themselves, or should the bolts hold them in the correct position?
VW wheels are "hubcentric" meaning the force of the road/weight of the car is spread through the wheel bolts AND the hub. So yes the hub should be a tight fit. Usually you can tell if there is a problem if the wheels wobble even when they are balanced and everything else suspensionwise is okay.
The 5 studs would centre the wheel and it should be ok, obviously having the spigot rings is better. Most of the rings that come with the alloys we sell are plastic so I assume they're given to make fitting easier and don't actually take any stresses..
the bolts only take the shear load if they are loose when torqued up it would have to overcome the clamping force too if you see what i mean
ive seen wheel studs shear because the alloys didnt have the spigot ring fitted. happened to a mate of mine in his calibra - not a nice site seeing one of your wheels barrelling off down the road infront of your eyes!
in the case of porsche adaptors i would really want them sitting on the spigot rings, cos you are asking a lot of a small metal ring in terms of loading etc
do you mean you wouldn't? or you would? sounds like you wouldnt, if youre asking a lot of the small metal ring etc...
sorry jeff I think the adaptors should sit nicely on the spigot rings, give them as much chance as possible, better to be safe
well yeah, it just sounded like you were saying the opposite, when your reason was that you are asking a lot of it. But I agree, would be better to have some extra location, it can only help!
I can tell you from experience - they wobble and tramline like mad! Bought some alloys a couple of weeks ago, and they put some rings on, but not the right ones. It is scary - feels like the wheels are loose on the hubs! They've now ordered some VW rings and I've got to go get them fitted next week. Also get bad vibration at anything over 60mph. Edited by: stella
Spigot rings must be used for safe load transfer... Even plastic ones on some aftermarket wheels are better than nothing.. They are strong enough in the way they are loaded (compression). Proper (read better IMHO) spigot rings should be metal not plastic, especially for car which get used on track and get their brakes very hot. Never rely on wheel bolts to hold the wheel on concentrically. 57.1mm is the VW hub centre diameter for ref. regards bill
