Ordered some cheap vrs branded £6 centre caps for my alloys. I know it's daft but I'm chuffed with them haha! Ordered 56mm to suit my (Neptune?) wheels. Worth noting that they were a rather lose fit and would definitely fall out. To remedy this I took the clips off my old caps and fitted them to the new caps. There was no lip to hold the clip in place so I super glued them in and its done the trick!

I think they look good and obviously suit the car .... You're not the only one I've heard of commenting though these after market caps albeit the "correct size" are pretty lose in the wheel and require the old retaining ring attached to stretch them out a bit 

Edited 3 September, 20187 yr by labman1001
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I fit some last week, mine are quite loose also, but i didn't seem to have the metal ring in 3 of them i took off. Look nice though

I installed the same loose ones as you.. All i done was wrap plumbers tape around them and shuved them in.. 7 months later they are still there lol...