Make out a “Menu” , showing all costs of your karting – , for example ,
4 sets of tyres — $700.00 – price per set $175.00 price each = $43.75
Let them pick , one tyre , one set , or all 4
I think you will find that just about any one you ask will give a little or a lot , think about it even if everyone you ask would give a gallon of gas or one entry fee — it will add up !
Regards , J.B.