This is our roof-mounted top pick. You might need a roof mounted rack if you don't have a hitch or need to reserve your hitch for towing. The Race Ready rack is for single bikes, and uses a ratchet arm to clamp the front wheel. This is ideal because it means no frame contact on that precious carbon bike! You would need to have existing crossbars on your car to mount this to, but it comes with universal hardware that's been compatible with every crossbar we've seen so far. We especially like that the rack has a built in lock for security, and of course folds down when not in use so we can leave it mounted all season long.