Ordered a set of Work wheels, but not sure which size hubcentric rings I need to order

i know lexus bore size is 60.1

 

find out the bore size of your work wheels and there you go

 

If you are careful in the correct torque sequence during install, you don't technically need rings. They're really for convenience more than anything.

If you want to ensure speedy install or if others work on your car, then the rings can make sure even torque is applied.

TL;dr, it's better to have them, but not completely necessary.

It's even best/better to have proper wheels that are actually made for your hub.

 

It really depends what the manufacturer cut the bore at for the wheel.
Typically for something that will fit our car they will bore the rim to 73.1...so you would need a 73.1 to 60.1 hubcentric ring adapter.

Despite what others may think, you're better off having the ring there...it will aide greatly in centering the wheel before you torque it down.
I could say that technically you only need 4 nuts to hold the wheel on instead of 5, but what would be the point...put all 5 nuts on....just like, put the adapter ring on.

And yeah, in a perfect world the bore of the rim would match the hub on the vehicle, of course this would drive the cost of rims up as they would have to be made on demand...and we're not outfitting Ferrari's here, just a Lexus IS.
Might as well ask for the nut holes to be cut like the OEM rims so we can use the same nuts...dare to dream!