Will these fit my wheels and studs?

These are M12 x 1.5 — confirm your wheel's lug pattern matches before ordering. If your wheels came with standard M12 lugs, these extended versions will thread on the same studs, but the extra length is what makes the difference for deeper wheels.

Do I need to remove all the spikes, or can I mix and match?

The spikes are removable on each lug individually, so you can run all spikes, no spikes, or a split design. Pull them straight off when you want the clean look.

What's the return window if they don't clear my brake calipers?

Check with ModSupply customer service for return eligibility — fitment issues depend on your specific brake setup. Before install, hand-thread a couple onto your studs and mock-fit the wheel to confirm clearance.