24's can be a headache for most places, the hunter wheel alignment system won't mount on wheels that large, they do sell an adapter that allows the sensor to fit larger wheels but with even one set of these adapters they still won't work on 24's, to do 24's you need 2 sets of adapters stacked, most places don't have 2 sets nor even know that they can use 2 sets at the same time... I had to borrow a set from one place while using the other places set to combine them just to even be able to mount the sensors to a 24" wheel... any place that does big wheels regularly though should have these 2 sets of adapters, might be worth asking places that sell these big wheels who has the capability to align with them, they should know I guess...